6311FF
FORTE TIMBER OVERLAY SYSTEM
1
GENERAL

If you have pre-customised this work section using the "questions and answers" provided as part of the downloading process, it may be necessary to amend some clauses to suit the final project-specific version.

 

The section must still be checked and customised to suit the project being specified, by removing any other irrelevant details and adding project-specific details and selections.

 

This section relates to the supply, laying and finishing of Forté range of timber overlay flooring.

It includes:

Modify expand this clause to suit requirements of this specification section.

Allow 2mm for glue thickness e.g. allow 18mm flooring depth for 16mm prefinished engineered flooring.

 

FSC or PEFC certification is available upon request for some products.  Contact Forte for further information.

Custom Product ranges are available upon request.  Contact Forte for further information.

 

Forté have a proposed Alternative Solution to NZBC clause E3.3.3 (floor surfaces of any space containing sanitary fixtures or sanitary appliances must be impervious and easily cleaned.)  It is detailed in Forte's Alternative Solution Guidance for Timber Flooring (E3 Installations).  This Alternative Solution is limited in its scope to certain substrates and other provisions, which are detailed in the guidance to the clause below.

1.1
RELATED WORK

Refer to ~ for ~.

Include cross references only to other work sections where they include directly related work.

Refer to 6192 FLOORING SUBSTRATE PREPARATION for preparation of flooring substrate and hard underlays.

Refer to 7545 UNDERFLOOR HEATING for integration with hydronic (water based) underfloor heating systems.

Refer to 7553 UNDERFLOOR HEATING MAT SYSTEM for integration with electric underfloor heating mat systems.

Delete clause if not applicable.

1.2
ABBREVIATIONS AND DEFINITIONS

Refer to the general section 1232 INTERPRETATION & DEFINITIONS for abbreviations and definitions used throughout the specification.

 

The following abbreviations apply specifically to this section:

FSC®

Forest Stewardship Council®

COC

Chain of Custody

PEFC

Program for the Endorsement of Forest Certification

Documents
1.3
DOCUMENTS

Refer to the general section 1233 REFERENCED DOCUMENTS. The following documents are specifically referred to in this section:

NZBC C/AS2

Protection from fire

NZBC C/VM2

Protection from fire

NZBC D1/AS1

Access routes

NZBC E3/AS1

Internal moisture

NZBC E3/AS2

Internal moisture

AS/NZS 1859.4

Reconstituted wood-based panels - Specifications - Wet-processed fibreboard

AS/NZS 2269.0

Plywood - Structural - Specifications

AS/NZS 4586

Slip resistance classification of new pedestrian surface materials

ISO 4760

Laminate flooring — topical moisture resistance — assembled joint

ISO 9239-1

 

Reaction to fire tests for floorings — Part 1: Determination of the burning behaviour using a radiant heat source

ISO 9705.1

Reaction to fire tests - Room corner test for wall and ceiling lining products -- Part 1: Test method for a small room configuration

Delete from the DOCUMENTS clause any document not cited.  List any additional cited documents.

AS/NZS 4586 is an Alternative Solution as the NZBC cites AS 4586.

 

The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS.

AS 4586

Slip resistance classification of new pedestrian surface materials

BRANZ BU 526

Specifying timber

BRANZ BU 531

Providing for thermal and moisture movement

1.4
MANUFACTURER/SUPPLIER DOCUMENTS

Manufacturer's and supplier's documents relating to this part of the work:

Forté Timber Overlay Flooring System Design Guide 3.0

Forté Product Specification Sheets

Forté Timber Overlay Flooring System Installation Guide 3.0

Forté Acoustick-Mat Acoustic Underlay Installation Guidelines

E3 Alternative Solution Document 3.0

Forté Care & Maintenance Guide for Commercial Spaces

Forte Timber Flooring Care and Maintenance Guide Residential 3.0

TAMSA International Consult 733 Critical Radiant Flux reports

ISTS Test Reports: Slip Resistance Classification of New Pedestrian Surface Materials

CodeMark™ Certificate CMNZ70143 Innovate Group Ltd T/A Forté – Forté Timber Overlay Flooring System

 

Manufacturer/supplier contact details:

Company:

Innovate Group Limited T/A Forté

Web:

https://forte.co.nz/

Email:

info@forte.co.nz

Telephone:

0508 356 677

It is important to ensure that all personnel on-site have access to accurate, up to date technical information on the specified products.  Also a particular product could have specific requirements for handling, storage, preparation, installation and finishing.  Access to technical information can help overcome potential problems.

Warranties
1.5
WARRANTY - MANUFACTURER/SUPPLIER

Provide a material manufacturer/supplier warranty:

25 years

Residential Structural Warranty on all Engineered Flooring Ranges

5 years

Commercial Structural Warranty on all Engineered Flooring

 

  • Provide this warranty on the Forté standard form.  Refer to https://forte.co.nz/ for warranty details and conditions.
  • Commence the warranty from the date of practical completion of the contract works.

 

Refer to the general section 1237 WARRANTIES for additional requirements.

Modify or expand the clause to suit project or manufacturer/supplier requirements, options include:

  • Change the standard form to be used (check with the manufacturer/supplier, use the general section 1237WA WARRANTY AGREEMENT if required)
  • Commence the warranty from the date of purchase (check with the manufacturer/supplier)
1.6
WARRANTY - INSTALLER/APPLICATOR

Provide an installer/applicator warranty:

2 years

For installation (by Forté approved installer)

 

  • Provide this warranty on the installer/applicator standard form.
  • Commence the warranty from the date of practical completion of the contract works.

 

Refer to the general section 1237 WARRANTIES for additional requirements.

Modify or expand the clause to suit project or installer/applicator requirements, options include:

  • Change the standard form to be used (check with the installer/applicator, use the general section 1237WA WARRANTY AGREEMENT if required)
  • Commence the warranty from the date of installation (check with the installer/applicator)
Requirements
1.7
QUALIFICATIONS – MANUFACTURER / SUPPLIER REQUIREMENTS

Workers to be approved by Innovate Group Limited.  Refer to 1270 CONSTRUCTION for additional requirements relating to qualifications.  Refer to https://forte.co.nz/ for details of Approved Installers.

This clause includes generic text which should be expanded only if there are specific qualification requirements.

1.8
NO SUBSTITUTIONS

Substitutions are not permitted to any specified system, or associated components and products.

1.9
INFORMATION FOR OPERATION AND MAINTENANCE

Provide maintenance documentation in accordance with Forté Timber Flooring Care and Maintenance Guide Residential 3.0 as necessary for the Principal to maintain the works.  Provide documentation no later than the date of practical completion or the date on which the Principal takes occupation of the works. Refer to https://forte.co.nz/ for care & maintenance.

1.10
HEALTH AND SAFETY

Refer to relevant Technical Data Sheets and Material Safety Data Sheets of moisture barrier & adhesives.

Consider adding a special clause where volatile or potentially dangerous adhesives and/or coatings are involved.

1.11
MAINTENANCE SCHEDULE

Ensure a maintenance cleaning schedule is put in place for commercial applications. For residential and commercial care and maintenance recommendations refer to https://forte.co.nz/.

Performance - wet areas
1.12
PROPOSED ALTERNATIVE SOLUTION - FLOOR SURFACE IMPERVIOUS / EASILY CLEANED

Refer to the Forté Alternative Solution Guidance for Timber Flooring (E3 Installations) within the specification Contract Appendix.  This proposed Alternative Solution supports the use of Forté Timber Overlay Flooring Systems in limited wet area applications, through in-service history, testing, specific installation methods and design.

 

The proposed Alternative Solution requires flooring system installation in wet areas to be in accordance with both ATFA (Australian Timber Flooring Association) recommendations and the Forté Timber Overlay Flooring System Installation Guide 3.0, including PVA adhesive to plank joints and caulking silicone gap filler to seal the perimeter and any fixed items within the area.

Refer to the E3 Alternative Solution Document 3.0 for details, and guidance on documentation to submit in support of an Alternative Solution.  Attach this document within the specification Contract Appendix.

 

The Alternative Solution applies to:

  • Single-dwelling kitchens, laundries and WCs (excluding bathrooms, rooms with baths and / or showers)
  • Multi-dwelling kitchens, if the kitchen sinks contain an integrated overflow and the rate of the sink overflow is greater than the rate of the tap flow
  • Multi-dwelling laundries
  • Substrates are limited to concrete, H3 treated plywood, H1.2 solid Pinus, H1.2 Douglas Fir, and solid native timber.

Note the conditions and limitations of use stipulated in the Codemark certificate CMNZ70143.

 

Installation of Forté Timber Flooring in commercial wet areas is not recommended, and is not supported by the proposed Alternative Solution.

 

Note that the acceptance of an Alternative Solution is at the discretion of the BCA.  Contact Forte for assistance if required.

1.13
TESTING MOISTURE CONTENT

Sample and test the substrate to ensure that moisture content is within the limits specified.  Provide a written record.

Refer to limits set out under EXECUTION, for circumstances that might apply.

Performance - generally
1.14
SURFACE FIRE PERFORMANCE

Forté Timber Overlay products meet the fire performance requirements of NZBC C/AS2 4.17.3, by either:

 

All Forté Collections onform to NZBC C/VM2, App B, Table B1, and have a deemed maximum Critical Radiant Flux of 2.2kW/m².

 

or


Critical Radiant Flux not required if area of non-conforming products have an aggregate surface area of not greater than 5m² within a fire cell, to NZBC C/AS2, 4.17.6.a.

Delete this clause for houses and similar residential projects under NZBC C/AS1 (as it does not apply).

 

NOTE;  NZBC C/VM2, Table B1 conditions for timber flooring are, to be at least  12mm thick and 400 kg/m³ (there are further conditions on coatings).  If these conditions are met, as of right Table B1 provides a maximum Critical Radiant Flux of 2.2 kW/m².

 

The 5m² limit includes the aggregate area of all surfaces within a firecell that do not comply with surface finish requirements of NZBC C/AS2.  Therefore separate surfaces in addition to the this product may need to be considered in order to determine the aggregate area.

 

Refer to TAMSA International Consult 733 Critical Radiant Flux reports.

Performance - Slip resistance

This guidance note describes the use of Masterspec slip resistance clauses.  The extent of slip resistance clauses included within this section is subject to Q&A and section requirements.  Ensure the section 1278SR SCHEDULE OF SLIP RESISTANCE TESTING is included in the specification.

 

NZBC D1/AS1, Table 2 identifies walking surfaces that are level or sloping access routes (including stairs) under dry and wet conditions that either:

  • Have acceptable slip resistance to D1/AS1, Table 2 without testing.  Use the clause SLIP RESISTANCE - SURFACES EXEMPT FROM TESTING.
  • Require testing to prove slip resistance.  Use the clause SLIP RESISTANCE - PREVIOUSLY TESTED SURFACE
  • Are not acceptable to, or outside the scope of D1/AS1 Table 2.  Surfaces in this category may be evaluated as an Alternative Solution based on testing (and may require alternative testing).  Use the clause SLIP RESISTANCE - PREVIOUSLY TESTED SURFACE.

Note:

  • If the surface is already tested, use clause SLIP RESISTANCE - PREVIOUSLY TESTED SURFACE.

 

Exceptions to wet slip resistance requirements for level access routes (refer NZBC D1/AS1, 2.1.2) include:

  • Situations where safety matting is provided.
  • For housing wet slip resistance applies only to the access route on the approach to the main entrance and not inside that entrance and not on the approach to other entrances.
1.15
SLIP RESISTANCE - SURFACES EXEMPT FROM TESTING

Walking surfaces comply with NZBC D1/AS1, Table 2 for slip resistance requirements and are exempt from testing.

Check project walking surfaces against Table 2 to confirm acceptable solution relates to project requirements.  Identify compliant walking surfaces if this section also includes surfaces to be tested, or surfaces previously tested.

1.16
SLIP RESISTANCE - PREVIOUSLY TESTED SURFACE

Forté Prefinished Engineered Wood Flooring products have been tested for slip resistance to AS/NZS 4586.  Refer to SELECTIONS for details.

Use only in dry interior level situations.  Refer to ISTS Test Reports: Slip Resistance Classificatino of New Pedestrian Surface Materials and https://forte.co.nz/

2
PRODUCTS
2.1
FORTÉ ENGINEERED TIMBER COLLECTIONS

Forté Engineered Timber Collections: Artefact, Artiste Rustic, Atelier, Custom, Indus, Moda Altro, Moda Mezzo, Moda Stretto, Smartfloor, Ultra, Urban and Villa are engineered flooring (real wood) composed of a hardwood veneer wear layer and a cross directional timber backing.

Supplied in planks.  Installation by direct stick.  Matching stair nosings are available.  Refer to SELECTIONS.

Suitable for floors, walls and ceilings in commercial and residential applications. Allow 2mm for glue thickness e.g. allow 18mm flooring depth for 16mm prefinished engineered flooring.

 

Forté Custom Product ranges are available.  Contact Forte for further information.

 

Refer to https://forte.co.nz/ for colours and applications.

Components
2.2
FORTÉ ACOUSTIC UNDERLAY - DIRECT STICK

Acoustick-Mat, a high density 5 mm recycled rubber and cork underlay, rated to ISO 717-2, providing up to 18dB sound transfer reduction.

Suitable for multi-level buildings, residential and commercial use, direct stick installations only. Refer to Acoustic-Mat underlay guidelines https://forte.co.nz/

Accessories
2.3
ADHESIVES

Apply one of the following where a moisture barrier, sound reduction and bonding system are required:

  • Selleys Liquid Nails Timberflex
  • Mapei Ultrabond Eco S955 1K
  • Ardex 480 MS.

Other Mapei products may be suitable.  Contact Forté for advice.

Adhesives suitable for installation of Forte Acoustic Underlay and the Forte Engineered Timber flooring.  Generally use adhesive and vapour barrier / wet area membrane from the same manufacturer to ensure compatibility: coordinate this clause content with the moistbure barriers / wet area membranes clause below.

2.4
ADHESIVES - JOINT SEALER FOR WET AREA APPLICATIONS

PVA D3 Adhesive used as a waterproof joint sealer to wet area applications.

2.5
SEALANT - FOR WET AREA APPLICATIONS

Timber floor silicone-free, paintable sealant / caulking suitable for wet area applications.

Forté recommend Bona Gap Master or Aquaseal Flex timber floor sealants.  Available in a range of colours.

2.6
MOISTURE BARRIERS / WET AREA MEMBRANES

Apply on of the following vapour barrier systems to concrete substrates:

  • Selleys Liquid Nails VBS
  • Mapei Planiseal MR
  • Ardex WPM 300.

Generally use vapour barrier and adhesive from the same manufacturer to ensure compatibility: coordinate this clause content with the adhesives clause above.

2.7
LEVELLING COMPOUNDS - CONCRETE SUBSTRATE

Mapei Ultraplan Eco, low VOC, fast hardening self levelling smoothing compound with appropriate Mapei Primer to suit substrate.

2.8
LEVELLING COMPOUNDS - TIMBER SUBSTRATE

Mapei Fiberplan - Ultra fast hardening self levelling smoothing compound with appropriate Mapei Primer to suit substrate.

2.9
FINISHING TRIM AND TRANSITION BARS

Brass or aluminium finishing trims and transition bars of varying profiles and finishes.  Refer to Section 8 of the Forté Timber Overlay Flooring System Design Guide 3.0.

3
EXECUTION
Conditions
3.1
DELIVERY, STORAGE & HANDLING OF PRODUCTS

Refer to 1270 CONSTRUCTION for requirements relating to delivery, storage and handling of products.

 

Store the timber flooring flat, in the original unopened packaging, in the areas it is to be installed in for at least 48 hours prior to installation, to allow the product to acclimatise to the room temperature and minimise the likelihood of any shrinkage or swelling.

Store timber out of direct sunlight, in a shaded and protected dry place (18°C to 25°C), away from walls and radiators.

 

Place stored packs on battens/ dunnage to minimise moisture absorption from the ground.  Do not store the timber flooring outside.

Use these standard generic clauses and if appropriate add additional special requirements.

3.2
ROUTINE MATTERS

Refer to 1250 TEMPORARY WORKS & SERVICES for protection requirements.
Refer to 1270 CONSTRUCTION for requirements relating to defective or damaged work, removal of protection and cleaning.

Use these standard generic clauses and if appropriate add additional special requirements.

3.3
PRE-INSTALLATION REQUIREMENTS

Check work previously carried out and confirm it is of the required standard for this part of the work.  Inspect the substrate to ensure it provides a suitable finish in accordance with the requirements of the Forté Timber Overlay Flooring System Installation Guide 3.0.  Do not start laying if the substrate will not allow work of the required standard. Carry out such additional preparatory work as required in bringing the substrate to suitable condition.

 

Check the sub-floor for evenness, not to exceed 3mm variation over a 3m length.  If substrate unevenness still exceeds 3mm variation over a 3m length after surface preparation apply levelling compound.

 

Check for moisture content by hygrometer.  Do not commence laying flooring until readings for the whole area are within acceptable levels as follows:

Timber substrate

8 -12% for air conditioned buildings
10 -14% for intermittently heated buildings
2 -16% for unheated buildings

Concrete substrate

70% relative humidity

 

If concrete substrate is above 70% Relative Humidity, apply selected moisture barrier.  If timber substrate is above allowable moisture content, then wait to allow to dry out and re-test.

3.4
CHECK TIMBER

Check that the timber supplied is as specified.  Check the moisture content of the timber flooring and subfloor to ensure it is at the required level for the installation environment.

3.5
DO NOT START

Do not start laying before the building is enclosed, doors are hung and lockable, wet work complete, full lighting available and in the case of air-conditioned buildings the air-conditioning operating for 6 weeks.

3.6
STARTING WORK

Starting work means the floor layer accepts the substrate as allowing work of the required standard.

3.7
TECHNIQUE DISCUSSION

Before beginning the installation, confirm the proposed layout of the timber, grain direction, any other visual considerations of the finished work and specified expansion requirements relating to the specified product.

Add more detail here, especially if bordered or patterned work is involved.  Herringbone and Chevron patterns require extra detail. Refer https://forte.co.nz/

Conditions - underfloor heating
3.8
UNDERFLOOR HEATING CONDITIONS

Conditions and installation must comply with the Forté Timber Overlay Flooring System Installation Guide 3.0.  Refer https://forte.co.nz/.

3.9
HYDRONIC UNDERFLOOR HEATING - DIRECT STICK

The surface of the slab from the heating tubes may not be less than 30mm and the recommended thickness is 60mm.

 

If a moisture test has not been carried out, turn off the underfloor heating 1 week prior to the test. Check for moisture content by hygrometer and do not commence installation until hygrometer readings show below 70%.

 

Commission the underfloor heating system, refer to Forté Timber Overlay Flooring System Installation Guide 3.0 for requirements.  The underfloor heating system should be working for at least 3 weeks prior to the flooring installation. Ensure the thermostat is fitted with a maximum temperature of 27°C and adjust the temperature a maximum +/-2°C per day.

 

Installation surface temperature to be maintained at 15°C during installation and kept at this temperature for a minimum 48 hours after completion.

 

Refer to https://forte.co.nz/, Forté Timber Overlay Flooring System Installation Guide 3.0 for details.

Note:  Hydronic Underfloor heating is suitable for use under all Forte Engineered Flooring Collections except Artiste Rustic.

3.10
ELECTRIC UNDERFLOOR HEATING SET INTO SCREED - DIRECT STICK

Ensure the surface of the screed is at least 8mm above the heating cable location.  Screed must be suitable for use with glued-down engineered timber flooring, structurally sound and free from laitance.

 

If a moisture test has not been carried out, turn off the underfloor heating 1 week prior to the test. Check for moisture content by hygrometer and do not commence installation until hygrometer readings show below 70%.

 

Commission the underfloor heating system, refer to Forté Timber Overlay Flooring System Installation Guide 3.0 for requirements.  The underfloor heating system should be working for at least 3 weeks prior to the flooring installation.  Ensure the thermostat is fitted with a maximum temperature of 27°C and adjust the temperature a maximum +/-2°C per day.

 

Installation surface temperature to be maintained at 15°C during installation and kept at this temperature for a minimum 48 hours after completion.

 

Refer to https://forte.co.nz/, Forté Timber Overlay Flooring System Installation Guide 3.0 for details.

Note:  Underfloor heating is suitable for use under all Forte Engineered Flooring Collections except Artiste Rustic.

Installation - generally
3.11
STANDARDS AND TOLERANCES

Refer to the general section 1270 CONSTRUCTION for general requirements.

Amend this clause to describe specific standards and tolerances to be achieved in carrying out this part of the work.  Although such tolerances are typically included in standards (NZS, AS/NZS etc) in certain circumstances it is worth restating these in this clause.

3.12
INSTALLATION GENERALLY

Execution and installation must comply with the requirements of the Forté Timber Overlay Flooring System Installation Guide 3.0.  Refer to https://forte.co.nz/.

Installation - substrate preparation
3.13
CONCRETE SUBSTRATE

Clear substrate of debris, clean off surface contamination and carry out surface repairs using a proprietary levelling compound.  Carefully feather out at perimeters of repaired areas.  Grind level, then vacuum to remove dust.

 

Check the sub-floor for evenness, not to exceed 3mm variation over a 3m length. If substrate unevenness still exceeds 3mm variation over a 3m length after surface preparation apply levelling compound.

If the subfloor height requires to be raised to meet adjacent flooring, a hardboard underlay of the required thickness can be adhesive fixed fixed to the substrate, this should only carried out once substrate us fully prepared and is level to 3mm variation over a 3m length.  If required, refer to 6192 FLOORING SUBSTRATE PREPARATION for hard underlay or substrate preparation.

3.14
PLYWOOD OR PARTICLEBOARD SUBSTRATE

Ensure substrate is minimum 18mm thick when over joists or minimum 15mm when over concrete.  Clear substrate of debris, machine sand to remove surface contamination, then vacuum to remove dust.

 

Check the sub-floor for evenness, not to exceed 3mm variation over a 3m length. If substrate unevenness still exceeds 3mm variation over a 3m length after surface preparation apply levelling compound.

 

The moisture content difference between the timber substrate and the Engineered Timber Flooring should be no more than 4% . Do not install if the moisture content difference is greater than this.  Carry out moisture test in accordance with the method described in the Forté Timber Overlay Flooring System - Installation Guide 3.0, section 3.3.

If the subfloor height requires to be raised to meet adjacent flooring, a hardboard underlay of the required thickness can be adhesive fixed fixed to the substrate, this should only carried out once substrate us fully prepared and is level to 3mm variation over a 3m length. If required, refer to 6192 FLOORING SUBSTRATE PREPARATION for hard underlay or substrate preparation.

3.15
EXISTING TONGUE AND GROOVE SUBSTRATE - DIRECT STICK

Ensure substrate is minimum 18mm thick when over joists or minimum 15mm when over concrete.  Clear substrate of debris, re-nail or replace any loose or missing boards, then machine sand to make level.

 

When installing over solid native timber subfloors in wet areas, a two component epoxy moisture barrier must be applied.

 

Check the sub-floor for evenness, not to exceed 3mm variation over a 3m length. If substrate unevenness still exceeds 3mm variation over a 3m length after surface preparation apply levelling compound.

If the subfloor height requires to be raised to meet adjacent flooring, a hardboard underlay of the required thickness can be adhesive fixed fixed to the substrate, this should only carried out once substrate us fully prepared and is level to 3mm variation over a 3m length. If required, refer to 6192 FLOORING SUBSTRATE PREPARATION for hard underlay or substrate preparation.

3.16
WET AREA MEMBRANE SYSTEM

Ensure that the selected wet area membrane system is compatible with glue down timber floor installations and has been installed in accordance with NZBC E3/AS2 requirements.

 

Ensure all timber flooring installation components such as adhesives are compatible with the selected wet area membrane.  Refer to https://forte.co.nz/, Forté Timber Overlay Flooring System Installation Guide 3.0 for requirements.

Installation over a wet area membrane is an Acceptable Solution under NZBC E3/AS2.  However, this can add significant cost and often is not practical to install.  Refer to the Forté Timber Overlay Flooring System Design Guide 3.0, section 5 for guidance on compliance with NZBC E3.  Refer to the Forté Timber Overlay Flooring System Installation Guide 3.0, section 4.6 for guidance on the specification and installation of wet area membranes.

 

If a wet area membrane is impractical, consider instead following the guidance in the E3 Alternative Solution Document 3.0 for other installation methods.

 

In accordance with the Forté Timber Overlay Flooring System Design Guide 3.0, a wet area membrane is required under the timber overlay systems for Multi-Dwelling Residential, in the following areas:

  • kitchens*
  • bathrooms
  • toilets
  • laundries.

* only if the kitchen sinks do NOT contain an integrated overflow, and the rate of the sink overflow is NOT greater than the rate of the tap flow.

 

For single-dwelling residential, a wet area membrane is not required for wet areas.  Refer to the E3 Alternative Solution Document 3.0 for details.

3.17
APPLY MOISTURE BARRIER - CONCRETE SUBSTRATE

If concrete substate is above 70% Relative Humidity, apply selected Mapei Mapeproof one component or Selleys Liquid Nails VBS two component moisture barrier with roller to substrate in accordance with manufacturer's requirements.

 

The relative humidity to be re-checked once the moisture barrier is dry.

3.18
APPLY LEVELLING COMPOUND - CONCRETE SUBSTRATE

If substrate unevenness still exceeds 3mm variation over a 3m length after grinding  apply levelling compound.

 

Apply appropriate Mapei primer to suit substrate.  Mix and apply by large metal trowel or rake Mapei Ultraplan Eco self-levelling compound in accordance with manufacturer's requirements for smoothing and removing differences in level between 1 to 10mm to concrete substrates.  For large installations Mapei Ultraplan Eco can be applied with an automatic pressure pump.

3.19
APPLY LEVELLING COMPOUNDS - TIMBER SUBSTRATE

If substrate unevenness exceeds 3mm variation over a 3m length after sanding apply levelling compound.

 

Apply appropriate Mapei primer to suit substrate.  Mix and apply by large metal trowel or rubber spreader Mapei Fiberplan self-levelling compound in accordance with manufacturer's requirements for smoothing and removing differences in level between 3 to 10mm to timber substrates.

Suitable for application over plywood / particle board or existing T&G timber substrates

Installation - acoustic underlays
3.20
INSTALL ACOUSTIC UNDERLAY

Install Forté Acoustick-Mat underlay in accordance Forté Acoustick Mat  Acoustic Underlay Installation Guidelines and the following requirements:

  • Unroll Acoustick-Mat and allow to condition in space it is to be installed for a minimum of 2 hours.  Cut rolls to size, allowing all cuts to condition for a further 2 hours.
  • Underlay must be laid at a 90° angle to the overlay flooring direction
  • Adhere to substrate using either Mapei Mapei Ultrabond Eco S955 or Ultrabond ECO® 995 or Selley Timberflex adhesive in accordance with manufacturer's requirements and immediately roll with medium weight roller
  • Allow 12-24 hours prior to installation of timber overlay floor over.

Acoustick-Mat underlay provides up to 18dB sound transfer reduction.  Suitable for use in multi-level buildings.

Installation - timber overlay flooring
3.21
INSTALL FORTÉ ENGINEERED WOOD PLANKS - DIRECT STICK

Install Forté prefinished engineered wood flooring in accordance with Forté Timber Overlay Flooring System Installation Guide 3.0, using the direct stick (glue down) method. Refer https://forte.co.nz/

 

Apply Mapei Ultrabond ECO® S955 1K, Ultrabond ECO® 995 or Selleys Timberflex with a notched trowel following manufacturer's instructions.  Follow requirements for open time, taking note of substrate porosity, ambient temperature and relative humidity.  Remove excess adhesive as the work proceeds using approved techniques.  Install the flooring strictly in accordance with Forté stated requirements.  Ensure the required expansion gap is left at perimeters and around fixed obstacles.

When underfloor heating is specified install pre-finished engineered wood flooring in accordance with the particular requirements of the Forté Timber Overlay Flooring System Installation Guide 3.0.

Forté recommend direct stick application method for all applications and Timber overlay collections.

3.22
SEALING JOINTS - TO WET AREAS

Apply D3 PVA adhesive during installation to all joints between timber overlay planks, both along the length of plank and between the ends of planks to all wet area applications.  For open plan spaces, this should extend 1.5m from each sanitary fixture and sanitary appliance.  Refer to Forté Timber Overlay Flooring System Installation Guide 3.0 for details.

Installation - miscellaneous
3.23
LAYING - STAIRCASES AND LANDINGS

Check for moisture content and suitability of substrate prior to installation.  Adhesive fix flooring and nosings to stair treads, risers and landings.

3.24
EXPANSION GAPS, PERIMETERS

Calculate expansion gaps strictly in accordance with Forte Flooring's requirements, to suit the environment, size of the installation and product type.

Refer to https://forte.co.nz/ for installation instructions.

3.25
EXPANSION JOINTS

Cover by timber or aluminium trim to allow unrestricted movement of the flooring.

Refer to https://forte.co.nz/ for installation instructions.

3.26
SEALANT TO PERIMETER - TO WET AREAS

After installation of timber overlay is complete apply water-resistant caulking silicone gap filler in accordance with the manufacturer's requirements and in accordance with Forté Timber Overlay Flooring System Installation Guide 3.0, to seal around the expansion gaps to perimeter and around any fixed items in the floor area.  For open plan spaces, this should extend 1.5m from each sanitary fixture and sanitary appliance.

3.27
EDGES

Install skirting after installation of the timber floor covering to cover the required expansion gap.

Completion
3.28
FLOORING SURFACES

Leave flooring surfaces free of adhesive, dirt and debris.  Vacuum off, damp mop with a low-foam neutral detergent and allow to dry.

3.29
PROTECT FINISHED SURFACE

Protect the surface using Protectaboard or similar approved until completion of the contract works, or until acceptance/sign-off by Contract Administrator.  Refer to Forté Flooring for details.

Avoid using tape on the floor. If required, use masking tape approved by Forté and do not leave on the surface for longer than 7 days

3.30
COMPLETION MATTERS

Refer to 1270 CONSTRUCTION for completion requirements and if required commissioning requirements.

Use this standard generic clause and if appropriate add additional special requirements.

4
SELECTIONS

For further details on selections go to https://forte.co.nz/.

Substitutions are not permitted to the following, unless stated otherwise.

Select the options to suit the project and delete options not specified.

Forté Prefinished Engineered Flooring Plank
4.1
FORTE ARTEFACT 15mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

220mm wide x1800mm and 2200mm long

Plank thickness:

15mm with 5.5mm European Oak Veneer

Surface texture:

Undulating surface, occasional saw-markings, deep wood grain texture

Finish:

Italian UV Cured Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

35 SRV / 0.55 COF

Product/code no:

Refer to Artefact product codes https://forte.co.nz/

Colour:

Refer to Artefact colour range https://forte.co.nz/

Surface fire:

Artefact collection conforms to NZBC C/VM2, App B, Table B1, and therefore has a deemed Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³. May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Artefact collection is not suitable for use in wet area applications, with a ≤39 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is required for surfaces with a rating ≤ P4 / 45 SRV to AS 4586

4.2
FORTE ARTISTE RUSTIC 20mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

250mm wide x 2480mm long

Plank thickness:

20mm with 5.5mm European Oak Veneer

Surface texture:

Undulating surface, occasional saw-markings, deep wood grain texture

Finish:

Italian UV Cured Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

35 SRV / 0.55 COF

Product/code no:

Refer to Artiste product codes https://forte.co.nz/

Colour:

Refer to Artiste colour range https://forte.co.nz/

Surface fire:

Artiste Rustic collection conforms to NZBC C/VM2, App B, Table B1, and therefore has a deemed Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³. May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Artiste Rustic collection is not suitable for use in wet area applications, with a ≤39 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is required for surfaces with a rating ≤ P4 / 45 SRV to AS 4586

4.3
FORTE ATELIER 15mm or 21mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

~mm wide x 2200mm long

Plank thickness:

~

Surface texture:

Brushed

Finish:

Ageing Stain with UV Cured Matte Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

42 SRV / 0.85 COF

Product/code no:

Refer to Atelier product codes https://forte.co.nz/

Colour:

Refer to Atelier colour range https://forte.co.nz/

Plank size/thickness:

220mm wide x 2200mm long / 15mm with 4mm European Oak Veneer or

 

260mm wide x 2200mm long / 21mm with 6mm Euopean Oak Veneer

Surface fire:

Atelier collection conforms to NZBC C/VM2, App B, Table B1, and therefore has a deemed Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³. May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Atelier collection can be used used in wet area applications, with a ≥39 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is required for surfaces with a rating ≤ P4 / 45 SRV to AS 4586

4.4
FORTE CUSTOM - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

~mm wide x ~mm long

Plank thickness:

~

Surface texture:

~

Finish:

~

Surface fire:

Critical Radiant Flux ~kW/m²

Slip resistance:

~ SRV / ~ COF

Product/code no:

Forte Custom product ranges are available.  Contact Forte for further information.

Surface fire:

Custom collection conforms to NZBC C/VM2, App B, Table B1, and therefore has a deemed Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³. May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

4.5
FORTE INDUS 18mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

240mm wide x 2400mm long

Plank thickness:

18mm with 4mm European Oak Veneer

Surface texture:

Lightly brushed

Finish:

UV Cured Matte Lacquer (6 coats)

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

44 BPN / 0.70 COF

Product/code no:

Refer to Indus product codes https://forte.co.nz/

Colour:

Refer to Indus colour range https://forte.co.nz/

Surface fire:

Indus collection conforms to NZBC C/VM2, App B, Table B1, and therefore has a deemed Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³.  May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Indus collection is not suitable for use in wet area applications, with a ≤40 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is required for surfaces with a rating ≤ P4 / 45 SRV to AS 4586

4.6
FORTE MODA ALTRO 15mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

220mm wide x 1830mm and 2190mm long

Plank thickness:

15mm with 4mm European Oak Veneer

Surface texture:

Brushed

Finish:

NatureMatte Lacquer (7 coats)

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

43 BPN / 0.60 COF

Product/code no:

Refer to Moda Altro product codes https://forte.co.nz/

Colour:

Refer to Moda Altro colour range https://forte.co.nz/

Surface fire:

Moda Altro has been tested to ISO 9239-1 in accordance with NZBC C/AS2 4.17.3

Slip resistance:

Moda Altro collection is suitable for use in wet area applications, with a ≥39 SRV as per NZBC D1/AS1 clause 2.1.2a

 

Moda Altro collection is suitable for commercial applications to stairs without the use of a slip-resistant nosing, with a 46 SRV (greater than P4 / 45 SRV to AS 4586)

4.7
FORTE MODA MEZZO 15mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

190mm wide x 2190mm long

Plank thickness:

15mm with 4mm European Oak Veneer

Surface texture:

Brushed

Finish:

NatureMatte Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

43BPN / 0.60 COF

Product/code no:

Refer to Moda Mezzo product codes https://forte.co.nz/

Colour:

Refer to Moda Mezzo colour range https://forte.co.nz/

Surface fire:

Moda Mezzo conforms to NZBC C/VM2, App B, Table B1, and therefore has a deemed Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³.  May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Moda Mezzo collection is suitable for use in wet area applications, with a ≥43 SRV as per NZBC D1/AS1 clause 2.1.2a

 

Moda Mezzo collection is suitable for commercial applications to stairs without the use of a slip-resistant nosing, with a 46 SRV (greater than P4 / 45 SRV to AS 4586)

4.8
FORTE MODA STRETTO 15mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

138mm wide x 2190mm long

Plank thickness:

15mm with 4mm European Oak Veneer

Surface texture:

Brushed

Finish:

NatureMatte Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

43 BPN / 0.60 COF

Product/code no:

Refer to Moda Stretto product codes https://forte.co.nz/

Colour:

Refer to Moda Stretto colour range https://forte.co.nz/

Surface fire:

Moda Stretto conforms to NZBC C/VM2, App B, Table B1, and therefore has a deemed Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³.  May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Moda Stretto collection is suitable for use in wet area applications, with a ≥43 SRV as per NZBC D1/AS1 clause 2.1.2a

 

Moda Stretto collection is suitable for commercial applications to stairs without the use of a slip-resistant nosing, with a 46 SRV (greater than P4 / 45 SRV to AS 4586)

4.9
FORTE SMARTFLOOR 15mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

190mm wide x 2200mm long

Plank thickness:

15mm with 4mm European Oak Veneer

Surface texture:

Brushed

Finish:

PureMatte Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

41 BPN / 0.75 COF

Product/code no:

Refer to Smartfloor product codes https://forte.co.nz/

Colour:

Refer to Smartfloor colour range https://forte.co.nz/

Surface fire:

Smartfloor collection conforms to NZBC C/VM2, App B, Table B1, and therefore has a de        emed Critical Radiant Flux of 5.7kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³. May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Smartfloor collection is not suitable for use in wet area applications, with a ≤41 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is required for surfaces with a rating ≤ P4 / 45 SRV to AS 4586

4.10
FORTE ULTRA 21mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

190mm wide x 1900mm long

Plank thickness:

21mm with 6mm European Oak Veneer

Surface texture:

Brushed

Finish:

PureMatte Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

37 SRV / 0.70 COF

Product/code no:

Refer to Ultra product codes https://forte.co.nz/

Colour:

Refer to Ultra colour range https://forte.co.nz/

Surface fire:

Ultra collection has been tested to ISO 9239-1 in accordance with NZBC C/AS2 4.17.3

Slip resistance:

Ultra collection is not suitable for use in wet area applications, with a ≤39 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is required for surfaces with a rating ≤ P4 / 45 SRV to AS 4586

4.11
FORTE URBAN 14mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Colour:

~

Plank size:

190mm wide x 1830mm long

Plank thickness:

14mm with 3mm European Oak Veneer

Surface texture:

Brushed

Finish:

Bona Matte Lacquer

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

39 BPN / 0.65 COF

Product/code no:

Refer to Urban product codes https://forte.co.nz/

Colour:

Refer to Urban colour range https://forte.co.nz/

Surface Fire:

Urban collection has been tested to ISO 9239-1 in accordance with NZBC C/AS2 4.17.3

Slip resistance:

Urban collection can be used for wet area applications, with a ≥39 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is not required for surfaces with a rating ≥ P4 / 45 SRV to AS 4586.  Urban collection meets this requirement and is suitable for use without slip-resistant nosings

4.12
FORTE VILLA 18mm COLLECTION - PREFINISHED ENGINEERED FLOORING PLANK

Location:

~

Application:

Direct stick

Product/code no:

~

Colour:

~

Plank size:

240mm wide x 2400mm long

Plank thickness:

18mm with 4mm European Oak Veneer

Surface texture:

Rough sawn & brushed

Finish:

UV Cured Matte Lacquer (6 coats)

Surface fire:

Critical Radiant Flux 2.2kW/m²

Slip resistance:

40 BPN / 0.70 COF

Product/code no:

Refer to Villa product codes https://forte.co.nz/

Colour:

Refer to Villa colour range https://forte.co.nz/

Surface fire:

Villa collection conforms to NZBC C/VM2, App B, Table B1, and therefore has a Critical Radiant Flux of 2.2kW/m².  (Table B1 Specified performances of some flooring materials - Wood Products, Plywood or Solid Timber ≥ 12mm thick and ≥ 400kg/m³. May include waterborne or solvent applied surface coatings not more than 0.4mm thick and not more than 100g/m²)

Slip resistance:

Villa collection is not suitable for use in wet area applications, with a ≤40 SRV as per NZBC D1/AS1 clause 2.1.2a

 

For stairways in commercial spaces, a slip-resistant nosing is required for surfaces with a rating ≤ P4 / 45 SRV to AS 4586

Components
4.13
MOISTURE BARRIER

Location:

For sealing concrete slabs - where RH exceeds 70%

Product:

Mapei Mapeproof 1K Turbo or Selley Liquid Nails VBS

Note:

Use timber floor adhesive over from same manufacturer

Location:

Where concrete slab relative humidity is greater than 70%

Product:

Generally leave both options unless there is preference for one system

 

Mapei Mapeproof 1K Turbo, one component  - use generally

 

Selleys Liquid Nails VBS, two component epoxy - use where a 2 pot system is required.

4.14
LEVELLING COMPOUND - CONCRETE SUBSTRATE

Location:

For levelling concrete slabs - where unevenness still exceeds 3mm variation over a 3m length after grinding

Primer:

Appropriate Mapei primer to suit substrate

Levelling:

Mapei Ultraplan Eco self-levelling compound

4.15
LEVELLING COMPOUNDS - TIMBER SUBSTRATE

Location:

For levelling timber substrates - where unevenness still exceeds 3mm variation over a 3m length after sanding

Primer:

Appropriate Mapei primer to suit substrate

Levelling:

Mapei Fiberplan self-levelling compound

Note:

Suitable for plywood / particle board or existing T&G timber substrates

4.16
ACOUSTIC UNDERLAY - FORTE ACOUSTICK MAT

Location:

~

Type:

Forté Acoustick Mat, AKM10

Thickness:

5mm

4.17
ADHESIVES

Location:

For application of direct stick timber overlay flooring and if required for acoustic underlay

Product:

Mapei Ultrabond Eco S955 or Ultrabond Eco 995 or Selley Timberflex

Product:

Generally leave all options unless there is preference for one system:

 

Mapei Ultrabond Eco S955  - use generally or

 

Ultrabond ECO® 995 adhesive - use generally, use in conjunction with Mapei moisture barrier and has increase acoustic performance if using acoustic underlay or

 

Selley Timberflex- use generally, use in conjunction with Selley moisture barrier

4.18
JOINT ADHESIVES - FOR WET AREA APPLICATIONS

Location:

To all joints in  timber overlay flooring in wet area applications

Product:

PVA D3 Adhesive

Note:

To all wet area application /  for open plan areas, this should extend 1.5m from each sanitary fixture and sanitary appliance.

4.19
SEALANT - FOR WET AREA APPLICATIONS

Location:

To expansion gaps to perimeter and around any fixed items in the floor area to wet area applications

Product:

~

Colour:

~

Product:

Forté recommend either Bona Gap Master or Aquaseal Flex

Colour:

Colour closest to floor colour.  Contact Forte for options

Note:

To all wet area application /  for open plan areas, this should extend 1.5m from each sanitary fixture and sanitary appliance.

4.20
FINISHING TRIM AND TRANSITION BARS

Location:

~

Profile/size:

~

Material/finish:

~/~

Colour:

~

Profile/size:

Refer to Forté Flooring for options

Material/finish:

Refer to Forté Flooring for options

4.21
FORTÉ STAIR NOSINGS

Location:

~

Product/Code No:

~

Size:

~

Surface texture:

~

Finish:

~

Size:

As required for Collection

Surface texture:

Same as product

Finish:

Same as product

Refer to https://forte.co.nz/ for options