4282SP
STOARMOUR FAÇADE PANEL 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 and installation of the StoArmour Façade Panel System consisting of a reinforced render over steel reinforced aerated concrete panels over high density polystyrene cavity battens.

It includes:

Modify or extend the above description to suit the project being specified.

 

The StoArmour Facade Panel System is BRANZ appraised - BRANZ Appraisal 772 - within the following scope:

(1) The system is appraised for use as external wall cladding system for buildings :

(2) The system must only be installed on vertical surfaces (except for tops of parapets, sills, and balustrades, which must have a minimum 10º slope and be waterproofed in accordance with Sto Specifications).

(3) The system is appraised for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills.

(4) The system installation of components and accessories supplied by Stoanz Ltd and Sto registered contractors must be carried out only by Sto registered contractors.

1.1
RELATED WORK

Refer to ~ for ~

Include cross references to other sections where these contain related work.

Refer to appropriate flexible wall underlay section.

Refer to appropriate rigid wall underlay section.

Refer to appropriate rigid air barrier section.

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:

AAC

Autoclaved Aerated Concrete

EPS

Expanded Polystyrene

VH

Very High (Refers to the density classification of EPS)

Documents
1.3
DOCUMENTS

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

NZBC C/AS1-C/AS2

Protection from fire

AS 1530.4

Methods for fire tests on building materials, components, and structures

NZBC B1/AS1

Structure

NZBC B2/AS1

Durability

NZBC E2/AS1

External moisture

AS/NZS 1170.2:2011

Structural design actions - Wind actions

AS/NZS 1170 AS/NZS 1170.5

Structural design actions - Earthquake actions

NZS 3404

Steel Structures

NZS 3604

Timber-framed buildings

ISO 5660.1

Reaction to fire tests (Heat release, smoke production and mass loss rate) Part 1: Heat release rate (cone calorimeter method)

BRANZ BU 567

E2/AS1 Flashing Requirements

BRANZ BU 570

Ground clearances

Note:

AS/NZS 1170.2:2011 is cited in NZBC B1/VM1 Structure at the time of writing.  The new version AS/NZS 1170.2:2021 is not yet cited.  Add year reference 2011 when using NZBC B1/VM1 Structure and amend the section accordingly.AS/NZS 1170.2:2011 is cited in NZBC B1/VM1 Structure at the time of writing.  The new version AS/NZS 1170.2:2021 is not yet cited.  Add year reference 2011 when using NZBC B1/VM1 Structure and amend the section accordingly.  AS/NZS 1170.2:2011 is cited in NZBC B1/VM1 Structure at the time of writing.  The new version AS/NZS 1170.2:2021 is not yet cited.  Add year reference 2011 when using NZBC B1/VM1 Structure and amend the section accordingly.

1.4
MANUFACTURER/SUPPLIER DOCUMENTS

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

StoArmour Façade Panel System - Brochure

StoArmour Façade Panel System - Detail Drawings

Sto Technical Data Sheets

Sto Material Safety Data Sheets

Sto Sustainability Data Sheets

Sto Specification New Zealand - SS505 StoMiral Render System over StoArmour Facade Panel

Sto Specification New Zealand - SS505 StoMiral Render System on StoArmour 75mm Facade Panel

Sto Specification New Zealand - SS506 StoArmat Miral Render System on StoArmour Facade Panel

Sto Specification New Zealand - SS506 StoArmat Miral Render System on StoArmour 75mm Facade Panel

Sto Quality Assurance Document New Zealand - StoArmat Render System on StoArmour Façade Panel

Sto Quality Assurance Document New Zealand - StoArmour Façade 50 or 75mm Panel Installation

Sto Quality Assurance Document New Zealand - StoMiral Render System on StoArmour Facade Panel

StoService Documents

StoArmat Warranty

BRANZ Appraisal 772 - StoArmour Panel Facade System

List documents relating to this part of the work, i.e. technical product/system specifications, test reports, appraisals, certification, etc. Normally they will be referred to in the text by the abbreviated title.

 

Manufacturer/supplier contact details

Company:

Stoanz Ltd

Web:

www.sto.co.nz

Email:

info@sto.co.nz

Email Technical:

jason@sto.co.nz, michelle@sto.co.nz, peter@sto.co.nz

Telephone:

04-801 7794

It is important to ensure that all personnel on site have access to accurate, up to date technical information on the many products, materials and equipment used on a project.  In most cases individual products are not used in isolation, but form part of a building process. Also, a particular manufacturer's and/or supplier's requirements for handling, storage, preparation, installation, finishing and protection of their product can vary from what might be considered the norm. Access to technical information can help overcome this potential problem.

Warranties
1.5
WARRANTY - MANUFACTURER/SUPPLIER

Provide a material manufacturer/supplier warranty:

15 years:

StoArmour Façade System with StoMiral Render System

20 years

StoArmour Façade System with StoArmat Miral Render System

 

  • Provide this warranty on the manufacturer/supplier standard form (if not available then use the standard form in the general section 1237WA WARRANTY AGREEMENT)
  • 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:

  • Modify the form to be used
  • Commence the warranty from the date of purchase (check with the manufacturer/supplier)

Note: The StoService Document forms part of the Sto Warranty.  Refer to clause INFORMATION FOR OPERATION AND MAINTENANCE in this section.

1.6
WARRANTY - INSTALLER/APPLICATOR

Provide an installer/applicator warranty:

5 years:

StoArmour Façade Panel System

 

  • Provide this warranty on the installer/applicator standard form (if not available then use the standard form in the general section 1237WA WARRANTY AGREEMENT)
  • 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:

  • Modify the form to be used
  • Commence the warranty from the date of installation (check with the installer/applicator)

Note: The Sto Quality Assurance Documents form part of the Sto Warranty.  Refer to clause CHECKLIST in this section.

Requirements
1.7
QUALIFICATIONS WORKERS – MANUFACTURER / SUPPLIER REQUIREMENTS

Workers to be registered Sto Contractors.  Refer to 1270 CONSTRUCTION for additional requirements relating to qualifications.

1.8
NO SUBSTITUTIONS

Substitutions are not permitted to any of the specified systems, components and associated products listed in this section.

1.9
SAMPLES

Refer to the general section 1270 CONSTRUCTION for details of how samples will be reviewed and how instructions to proceed will be given.  Provide the following samples for review:

 

Sample A

Sample B

Sample C

Sample description:

~

~

~

Sample type:

~

~

~

Number:

~

~

~

Location:

~

~

~

Supporting documentation:

~

~

~

Reviewer:

Contract administrator

~

Contract administrator

~

Contract administrator

~

Time for review:

10 working days ~

10 working days ~

10 working days ~

Review criteria:

~

~

~

The intention of this clause is to allow samples to be obtained that are not otherwise readily available to a reviewer.

 

Delete rows and columns not required or add "n/a".

Sample description:

Describe the sample, size etc.

Submit one 300mm x 300mm standard panel of the selected finish texture and colour for review.

In some instances a larger sample panel may be warranted.

Sample type:

Portable sample for review

Portable control sample

Fixed sample for review

Fixed control sample

 

Control samples define requirements for type and quality and are used for comparison purposes throughout the contract.

 

A "portable" sample is a sample that is easily movable, convenient for carrying. A "fixed" sample is a sample (semi) permanently placed. Expand on these terms as necessary.

Number:

State number of samples required, e.g. a minimum of three control samples - portable allow a sample to be retained on site with the other samples retained by the contract administrator and contractor.

Location:

Identify location of fixed samples, e.g. off site, on site, in situ

Supporting documentation:

Describe any additional documents required to support the review.

Reviewer:

 

Modify to suit the project, add additional reviewers if required.

Time for review:

Alter time if required.Expand to state timing in relation to when and where the sample is provided, e.g. at first site meeting.

Review criteria:

For example:

- Appearance

- Texture

- Colour

Add any critical items. Provide clarity for work that is not dependent on the review to continue.

1.10
INFORMATION FOR OPERATION AND MAINTENANCE

Refer to the general section 1239 OPERATION & MAINTENANCE for provision of the following general operation and maintenance information as electronic PDF format documents:

StoService Documents for StoArmour Façade Panel System

Use this clause to list requirements of information that is required but which does not warrant a separate specialist operation and maintenance manual.  Amend the clause if hard copy documents are required.

Provide this information prior to practical completion.

The general section 1239 OPERATION & MAINTENANCE describes the process of submission and review of operation and maintenance information.  Use this clause to describe the specific requirements, the required information and what it is to cover.

Compliance information
1.11
COMPLIANCE

The StoArmour Facade Panel System has been appraised as meeting provisions of the NZBC. Refer to BRANZ Appraisal 772.

1.12
INFORMATION REQUIRED FOR CODE COMPLIANCE

Provide the following compliance documentation: -

  • Manufacturer / supplier warranty
  • Installer / applicator warranty
  • Producer Statement - Construction from the applicator / installer
  • Other information required by the BCA in the Building Consent Approval documents

List the Producer Statements - Construction (PS3) required from installers that are required as a condition of carrying out this work.

List also Producer Statements - Construction Review (PS4) required from consultants to be engaged by the Contractor.

Producer Statement - Design (PS1), may be required where certain design work is undertaken by the Contractor or manufacturer.

Performance - General
1.13
PERFORMANCE RENDER SYSTEM

Accept responsibility for the durability and weathertight performance of the exterior render application.

Performance - Fire

For all risk groups other than SI (care or detention) NZBC C/AS1, 5.4 Exterior surface finishes and C/AS2, 5.8 External cladding systems allow cladding materials to be exempt from testing if located at a distance greater than or equal to 1.0m from a relevant boundary with a building height less than 10m.  For risk group SI testing is required to achieve Type A or Type B classification or alternatively select non-combustible or limited-combustible cladding material.

 

Delete the following fire performance clause(s) if not required.

1.14
EXTERNAL FIRE SPREAD - CLADDING MATERIALS

StoArmour Facade Panel System tested in accordance with Paragraph 5.4 of NZBC Acceptable Solution C/AS1 and Paragraph 5.8.1 of NZBC Acceptable Solution C/AS2, achieving Type A classification (peak heat release rate ≤ 100 kW/m², total heat release rate ≤ 25 MJ/m²).  Refer to BRANZ Appraisal 772.

Note, BRANZ appraisal only covers buildings ≤ 10m in height.

 

 C/AS1 scope - external wall cladding system:

<1.0m to relevant boundary - Type A classification required.

Building height >10m and ≥1.0m to relevant boundary - Type A or Type B classification required.

No classification required where external walls are located ≥ 1.0m from a relevant boundary and building height is ≤ 10m or for buildings sprinklered to NZS 4515 where external wall cladding system is located ≥ 1.0m from a relevant boundary.

 

 C/AS2 scope (excluding risk group SI care or detention).

Cladding materials <1.0m to relevant boundary - Type A classification required.

Cladding materials for multi-level buildings ≥10m in height - Type A classification required.

No classification required ≥ 1.0m from a relevant boundary with a building height ≤ 10m.

 

 C/AS2 scope for risk group SI (care or detention) only.

Cladding materials <1.0m to relevant boundary - Type A classification required.

Cladding materials ≥1.0m to relevant boundary and building height <10m - Type A or Type B classification required.

Cladding materials for building height ≥ 10m - Type A classification required.

1.15
FIRE BARRIERS - VENTILATED CAVITY CONSTRUCTION

Exterior Ventilated Cavity Fire Barrier Strips comprising of a moisture resistant, rigid, high expansion intumescent core encased in aluminium foil, tested to AS 1530.4.  Refer to SELECTIONS for type.

The Fire Barrier Strip will maintain the ventilated cavity space but in the event of fire expands to seal off the cavity to prevent spread of flame.  Omit clause if not required.

Quality control and assurance
1.16
QUALITY ASSURANCE DOCUMENTATION - INSTALLER/APPLICATOR

Sto contractor to complete the Sto Quality Assurance documents and retain the documents for the duration of the Sto warranty.

The Sto Quality Assurance documentation records the installation of the StoArmour Façade Panel System in accordance with Sto quality requirements.

1.17
INSPECTIONS

~

~

Coordinate with COMPLETION - TESTS & CERTIFICATION and/or COMMISSIONING - TESTS & CERTIFICATION.

Use this clause for parts of the work where:

 

Special arrangements are required for notification for inspections.

These inspections may include 'Hold Points' or 'Notification Points'.  Refer to 1232 INTERPRETATION & DEFINITIONS for complete definitions.

Hold Point:  Work may not proceed until the work in question has been inspected.

Notification Point:  Notify Contract Administrator, work may be observed or not, work may proceed.

or

the manufacturer/supplier is required to carry out inspections outside their normal activities and provide reports or other documents in support of the work carried out.

or

the Contractor is required to carry out or engage consultants to carry out inspections of parts of the work.  It will typically be expected that the person carrying out the inspections will be required to provide producer statements in support of the work carried out.

2
PRODUCTS
Materials
2.1
STOARMOUR PANEL

50mm and 75mm thick StoArmour lightweight, steel reinforced, autoclaved aerated concrete (AAC) panel.  Available in 600mm width and 2200mm length.  Refer to SELECTIONS.

The 50mm StoArmour panel is typically installed with a free overhang that sits 50mm below the base of the wall.  The 75mm StoArmour Panel must be installed on a solid foundation, typically with a 50mm rebate.  Note, the concrete foundation requires waterproofing with StoFlexyl Waterproofing Render.

2.2
STO LEVELL NOVO BASECOAT RENDER

StoLevell Novo lightweight, polymer-modified, cement-based render containing polystyrene aggregates.

2.3
STOARMAT CLASSIC REINFORCEMENT RENDER

StoArmat Classic plasticiser-free, polymer-modified, cement-free reinforcement render containing granulated quartz sands, calibration grain, polypropylene fibre, and additives.

Use clause for StoArmat Miral Render System only.  StoArmat Classic HD with hardener for accelerated drying in cold damp weather are also available.  Modify to suit project requirements.

2.4
STO MESH

Sto Mesh 4mm x 4mm plasticiser-free, alkali-resistant, glass fibre mesh.  Refer to SELECTIONS.

Used with StoLevell basecoat render (StoMiral Render System), with StoArmat Render (StoArmat Miral Render System) and with StoFlexyl waterproofing render for waterproofing horizontal surfaces, such as tops of parapets, balustrades, sills or rebated concrete foundations.

2.5
STOLIT COLOURED FINISHING RENDER

Stolit coloured, plasticiser-free, polymer-modified, cement-free render, containing marble aggregates.  Different render types are available.  Refer to SELECTIONS.

2.6
STOCOLOR - FACADE PAINT

StoColor acrylic based paint.  Refer to SELECTIONS.

2.7
S-PROTECT SC - FACADE SEALER

S-Protect SC invisible (non-film forming), hydrophobic, silane-based sealer.

A sealed finish can be applied to Stolit MP, MP Natural, or Stolit Milano finishing renders instead of applying StoColor facade paint.  Omit if not required.

2.8
STOTHERM EPS CAVITY BATTEN

StoTherm EPS Cavity Batten 20mm x 50mm and 40mm x 50mm VH-Grade expanded polystyrene (EPS) batten.  Available in 1200mm length.  Refer to SELECTIONS.

Used to form 20mm or 40mm deep cavity.  20mm thick battens are standard, 40mm battens are only used where a deeper cavity is required (often at rebated foundation).

Components
2.9
STO UPVC JOINERY FLASHINGS

Sto uPVC Joinery Flashings consisting of pre-formed, extruded uPVC flashing profiles.

Selection of proprietary Sto uPVC flashings used for flashing over panel and cavity at joinery junctions, and include Sto uPVC Adhesive Sill & Jamb Flashing, Sto uPVC Cavity Jamb Flashing, Sto uPVC Vented Head Flashing, Sto uPVC Clip-on Flashing.

2.10
STO UPVC TERMINATION PROFILES

Sto uPVC Termination Profiles consisting of pre-formed, extruded uPVC profile.  Refer to SELECTIONS.

Selection of proprietary Sto uPVC profiles used for terminating panel, and include Sto uPVC Base Cap, Sto uPVC Vented Base Cap, Sto uPVC End Cap, Sto uPVC Adjustable Vented Foot Tray, Sto uPVC Clip On Tray.

2.11
STO UPVC CONTROL JOINT PROFILES

Sto uPVC Control Joint Profiles consisting of extruded uPVC flange profile with V-shaped recess.  Available with 8mm and 12mm wide recess.  Refer to SELECTIONS.

Selection of proprietary Sto uPVC control joint profiles to form 8mm and 12mm wide control joints.  Control joints in render system must coincide with control joints in framing substrate and / or junctions between dissimilar materials. Vertical control joints are required to be placed at maximum 8.0 metre centres using Sto uPVC 8mm Control Joints.  Horizontal control joints are only required at inter-storey junctions where unseasoned timber joists have been used using Sto uPVC 12mm Control Joints.  Horizontal drained junctions are required to limit continuous cavities to two storeys or 7 m in height, whichever is less, in accordance with NZBC Acceptable Solution E2/AS1.

Control joint setting-out should be considered carefully at design stage and be clearly marked on drawings.

2.12
STO UPVC PRE-MESHED PROFILES

Sto uPVC Pre-meshed Profiles consisting of extruded uPVC and fibreglass corner profiles.  Refer to SELECTIONS.

Selection of proprietary Sto uPVC pre-meshed profiles used for terminating render coat, and include Sto uPVC Pre-meshed Finishing Edge, Sto uPVC Pre-meshed Drip Edge, Sto uPVC Pre-meshed Corner Angle, Sto uPVC Pre-meshed Adjustable Corner Angle.

2.13
WEEPHOLE VENT

Proprietary Weephole Vent with screening grate to front.  Vent to achieve minimum ventilation of 1000mm² per lineal metre in cavity.  Refer to SELECTIONS.

Used to provide a clear air passage for the removal of moisture, and the circulation of air to vent the cavity at the base of StoArmour Panel when installed on rebated concrete foundation.  Expand clause if required to describe manufacturer specific vent.

2.14
ARCHITECTURAL PROFILES

Bespoke pre-rendered expanded polystyrene decorative mouldings.

Used to create architectural detailing or cover inter-storey control joints.  Expand clause if required to describe project specific mouldings.  Note, profiles are not supplied by Stoanz Ltd.

2.15
WALL UNDERLAYS

For flexible wall underlays and rigid wall underlays, refer to the appropriate separate section(s).

Adhesives / Waterproofing / Sealer / Primer
2.16
STOARMOUR PANEL ADHESIVE

StoArmour polymer-modified, cement-based adhesive comprising graded sand and additives.

Used for temporarily bonding StoArmour panel joints during construction, and temporarily bonding Sto uPVC flashings / profiles, Weephole Vent to StoArmour panels until rendering is complete.

2.17
STOFLEXYL RENDER

StoFlexyl cementitious waterproof render, containing portland cement, synthetic resin, and mineral additives.  StoFlexyl is used as a waterproofing render and adhesive.  It is mixed on-site with StoFlexyl Cement to suit application.

Modify clause if other BRANZ appraised liquid waterproofing and / or construction adhesive is being used.  Note, horizontal surfaces, such as tops of rebated concrete foundations, parapets, balustrades, sills or rebated concrete foundations must have a minimum 10º slope and be waterproofed.

2.18
S-PROTECT WS205 - PANEL SEALER

S-Protect WS205 milky-white, silane sealer with water repelling additives.

Used for sealing and drying StoArmour panel surfaces prior to applying Sto Render system.

2.19
STOPLEX W - RENDER SEALER

StoPlex W acrylic-based sealer with siloxane, water repelling additives.

Used for sealing and drying StoLevell Novo render surfaces.

2.20
STO JOINT SEAL TAPE

Sto Joint Seal Tape expanding, impregnated polyurethane foam tape.

2.21
JOINT SEALANT

Joint Sealant complying with NZBC Acceptable Solution E2/AS1, or sealant covered by a valid BRANZ Appraisal for use as weather sealing sealant for exterior use.

2.22
PEF ROD

PEF closed cell polyethylene rod.

2.23
STEEL PRIMER

Zinc-filled epoxy primer for exterior steel surface applications

Used for priming any exposed StoArmour Panel reinforcing steel.

Fixings
2.24
STO AAC SCREWS

Sto AAC Screws available in stainless steel and hot-dip galvanized steel.  Refer to SELECTIONS.

Used for fixing StoArmour Panel to structural framing.  Stainless steel screws for Exposure Zone D defined in NZS 3604 and hot-dip galvanized screws for Exposure Zone B and C defined in NZS 3604.

3
EXECUTION
Conditions
3.1
DELIVERY, STORAGE & HANDLING OF PRODUCTS

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

Use this standard generic clause 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.

Moisture content timber framing:

24% maximum

Delete moisture content from clause when using steel framing.

Installation General
3.4
STANDARDS AND TOLERANCES

Refer to the general section 1270 CONSTRUCTION for general requirements.

Permissible deviations from established lines and dimensions equal to or less than the following. Multiples of given limits are not cumulative.

  •   Solid plastering: +/- 3 mm over 1800 mm

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

3.5
INSTALLATION REQUIREMENTS

Install the StoArmour Facade Panel System in accordance with Sto Quality Assurance documentation and Sto Specifications.  Mix and apply render products in accordance with Sto Technical Data Sheets requirements and within temperature conditions and curing times between coats as required.

Installation StoArmour Panel System
3.6
STOTHERM EPS CAVITY BATTEN

Install StoTherm EPS Cavity Batten to framing and temporally fix to full length of each stud.  Install additional vertical StoTherm EPS battens at 300mm centres when installing over flexible wall underlays on 600mm centred framing.  Install horizontal StoTherm EPS spacers offset with minimum 5º degrees angles and minimum 50mm clearance from vertical StoTherm EPS battens.

Structural framing is typically set out at 600mm or 400mm centres depending on wind zone.  Refer to Sto Specifications and Detail Drawings for further details on frame setting-out.  A drained inter-storey metal flashing is required for three storey cavity construction to limit the cavity to two storeys with a maximum unrestricted cavity height of 7 metres.

3.7
APPLY STOFLEXYL WATERPROOFING TO REBATED CONCRETE FOUNDATION

Apply StoFlexyl waterproofing render to top of rebated concrete foundation prior to panel installation. Apply one brush coat and allow to cure / dry.

Select when installing 75mm StoArmour Panel over rebated concrete foundation, which requires waterproofing with StoFlexyl.

3.8
PRIME EXPOSED REINFORCED STEEL TO STOARMOUR PANEL

Prime any exposed reinforced steel to StoArmour Panel with Steel Primer prior to panel installation.

3.9
STOARMOUR PANEL SETTING-OUT

Install StoArmour Panel horizontally in staggered pattern with minimum 150mm offset.  Stagger vertical butt joints at corners (internal and external).

3.10
INSTALL STOARMOUR PANEL OVER REBATED CONCRETE FOUNDATION

Install first row of StoArmour Panel horizontally to the base of the wall.  Apply StoArmour Panel Adhesive to panel edges then place in position.  Position panel edge minimum 50mm below bottom plate and with minimum 10mm gap to waterproofed rebated concrete foundation.  Fix panel through StoTherm EPS Cavity Battens to framing with two Sto AAC Screws centred on studs at maximum 300m vertical centres.  Position screws typically minimum 50mm from vertical panel edge and minimum 150mm from horizontal panel edge.  Position bottom screws 75mm from bottom edge of panel and screw fix into bottom plate with one additional screw centred between studs where studs are at 600mm centres.  Pre-drill screws and countersink between 5mm to 12mm below the panel surface to provide 30mm minimum penetration into framing.  Repeat process.

Select when installing 75mm StoArmour Panel.  Note, the 750mm StoArmour Panel must be supported on a rebated concrete foundation.  Maximum countersunk depth for rigid underlay construction is up to a maximum of 12 mm to maintain 30 mm embedment into the framing.  Modify if required.

3.11
INSTALL STOARMOUR PANEL AT BASE OF WALL

Install first row of StoArmour Panels horizontally to the base of the wall.  Apply StoArmour Panel Adhesive to panel edges then place in position.  Position panel edge minimum 50mm below bottom plate to base cap drip edge.  Fix panel through StoTherm EPS Cavity Battens to framing with two Sto AAC Screws centred on studs at maximum 300m vertical centres.  Position screws typically minimum 50mm from vertical panel edge and minimum 150mm from horizontal panel edge.  Position bottom screws 75mm from bottom edge of panel and screw fix into bottom plate with one additional screw centred between studs where studs are at 600mm centres.  Pre-drill screws and countersink between 5mm to 12mm below the panel surface to provide 30mm minimum penetration into framing.  Repeat process.

Select when installing 50mm StoArmour Panel.  Maximum countersunk depth for rigid underlay construction is up to a maximum of 12 mm to maintain 30 mm embedment into the framing.  Modify if required.

3.12
INSTALL WEEPHOLE VENT OVER REBATED CONCRETE FOUNDATION

Install Weephole Vents at base of the panel wall in accordance with manufacturer requirements.  Apply StoArmour Panel Adhesive to edges and place hard onto the rebated concrete foundation into the joint between two StoArmour Panels.  Set vent out from the face of the panel by the thickness of the render system.

3.13
INSTALL STOARMOUR PANEL

Install next row of StoArmour Panels horizontally over base panels.  Apply StoArmour Panel Adhesive to panel edges then place in position.  Fix panel through StoTherm EPS Cavity Battens to framing with two Sto AAC Screws centred on studs at maximum 300mm vertical centres and minimum 50mm from vertical panel edge.  Pre-drill screws and countersink between 5mm to 12mm below the panel surface to provide 30mm minimum penetration into framing.  Repeat process.

3.14
PREPARE STOARMOUR PANEL SURFACE

Clean StoArmour Panel surface prior to applying S-Protect WS205 sealer.  Remove any contaminants and excess adhesive, rasp back any irregularities, and fill minor gaps with StoLevell Novo render.  Allow to dry.

3.15
APPLY S-PROTECT WS205 PANEL SEALER

Apply one coat of S-Protect WS205 to clean, dry StoArmour Panels using a back-pack sprayer and block brush. Allow to dry.

3.16
INSTALL STO UPVC FLASHINGS AND PROFILES

Install Sto uPVC Joinery Flashings and Sto uPVC Termination Profiles over sealed StoArmour Panels.  Apply StoArmour Panel Adhesive to back of flashing / profile and fit under compression over panels.  Protect dissimilar material flashings during installation.

Installation StoMiral Render and StoArmat Miral Render System
3.17
RENDER APPLICATION

Apply render to clean and dry surface.  Screed render to an even, flat surface by scraping back high points and filling in hollows to achieve a straight and true render line.  Allow for curing between render coats.

3.18
APPLY RENDER OVER WEEPHOLE VENT

Apply render over Weephole Vents in accordance with manufacturer requirements.

3.19
APPLY STO LEVELL NOVO MESHED BASECOAT RENDER

Apply first coat of StoLevell Novo render over sealed panels to a thickness of 5mm.  Insert Sto Mesh lightly embedded into the still wet StoLevell Novo render with overlapping mesh joints by minimum 75mm.  Lightly float surface to ensure that the mesh has been embedded.  Apply a second coat of StoLevell Novo render over Sto Mesh to a thickness of 2mm up to 4mm and completely covering the Sto Mesh.  Allow to cure / dry.

Select for StoMiral Render System only.

3.20
APPLY STOFLEXYL MESHED WATERPROOFING OVER HORIZONTAL SURFACES

Apply StoFlexyl meshed waterproofing render over dry StoLevell Novo basecoat render surface using hawk and trowel.  Insert Sto Mesh lightly embedded into the still wet StoFlexyl render with overlapping mesh joints by minimum 75mm.  Lightly float surface to ensure that the mesh has been embedded to attain total applied render thickness of minimum 1.5 mm and completely covering the Sto Mesh.  Allow to dry, then continue applying second coat of basecoat render or StoArmat reinforcement render.

Render surfaces at top of parapets, balustrades, or other horizontal surfaces require waterproofing with meshed StoFlexyl.  Note, waterproofing membrane must be extended 75 mm up or down adjacent vertical surfaces, and all rendered horizontal surfaces must have a minimum 10º fall (sills 15º falls).

3.21
APPLY STOLEVELL NOVO BASECOAT RENDER

Apply one coat of StoLevell Novo render over clean, dry, sealed panels to a thickness of 6mm to 7mm using a hawk and trowel.  Screed render to an even, flat surface minimum 5mm thick by scraping back high points and filling in hollows.  Allow to cure / dry.

Select for StoArmat Miral Render System only.

3.22
INSERT STO UPVC CONTROL JOINTS PROFILES

Insert Sto uPVC Control Joint Profiles lightly embedded into the still wet StoLevell Novo render and set straight to line.  Keep clean from render overlaying joint.

3.23
INSERT STO UPVC PRE-MESHED PROFILES

Insert Sto uPVC Pre-meshed Profiles lightly embedded into the still wet StoLevell Novo render and set straight to line.

Select for StoMiral Render System only.

3.24
PREPARE RENDER SURFACE

Once dry, rasp back any high spots or ridges in the StoLevell Novo render and fill in any depressions to achieve a straight plane rendered surface prior to applying sealer.

3.25
APPLY STOPLEX W RENDER SEALER

Apply one coat of StoPlex W sealer to clean, dry StoLevell Novo render using a back-pack sprayer and block brush. Allow to dry.

3.26
FIT STO UPVC PRE-MESHED PROFILES

Fit Sto uPVC Pre-meshed Profiles and place over sealed StoLevell Novo render.  Continue with applying StoArmat reinforcement render, embed profiles into wet render, and set straight to line.

Select for StoArmat Miral Render System only.

3.27
APPLY STOARMAT MESHED REINFORCEMENT RENDER

Apply first coat of StoArmat reinforcement render over sealed StoLevell Novo render to a thickness of 2mm using a hawk and trowel.  Insert Sto Mesh lightly embedded into the still wet StoArmat reinforcement render with overlapping mesh joints by minimum 75mm.  Lightly float surface to ensure that the mesh has been embedded.  Apply a second coat of StoArmat reinforcement render over Sto Mesh to a thickness of 1.5mm and completely covering the Sto Mesh.  Allow to cure / dry.

Select for StoArmat Miral Render System only.

3.28
INSTALL ARCHITECTURAL PROFILE

Install Architectural Profile prior to applying Stolit finishing render.  Notch trowel StoFlexyl render to the back of the profile and embed onto the dry meshed render layer with joints butted together using StoFlexyl adhesive.

Modify and expand clause if mechanical fixings are required for larger or heavy profiles.  Note, any control joints must be mirrored through the architectural profile.

3.29
FILL STO UPVC CONTROL JOINT PROFILES

Fill Sto uPVC Control Joint Profiles with Joint Sealant concave tooled.  Prime before applying sealant if required by sealant manufacturer.  Allow sealant to cure prior to applying StoColor Facade Paint.

Control Joints can also be left unsealed to form a negative detail and be finished with a paint system only, omit or modify clause if required.  Note, some sealant manufactures require primers for PVC or porous substrates.

3.30
SEAL JUNCTIONS

Seal junctions at joinery, adjacent dissimilar material surfaces and around penetrations with Joint Sealant over PEF Rod or Sto Joint Seal Tape (as required).  Prime surfaces before applying sealant if required by sealant manufacturer.  Allow sealant to cure prior to applying StoColor Facade Paint.

Note, some manufacturers require primers for PVC or porous substrates.  StoFlexyl waterproofing render surfaces must be sealed to promote adhesion.

Installation Finishing Render System

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

3.31
APPLY STOLIT K FINISHING RENDER

Apply one coat of selected Stolit K finishing render tinted to selected colour.  Apply with a spreading rate of 12m² per pail (25kg) for Stolit K 1.0mm, 9m² per pail (25kg) for Stolit K 1.5mm, 7m² per pail (25kg) for Stolit K 2.0mm and 4m² per pail (25kg) for Stolit K 3.0mm.  Finish render to achieve the selected render finish texture.

Expand clause to include specific render finish type.

3.32
APPLY STOLIT MP / STOLIT MP NATURAL FINISHING RENDER

Apply two coats of selected Stolit MP finishing render tinted to selected colour.  Apply with a spreading rate of 12-14 m² per pail (25kg).  Finish render to achieve the selected render finish texture.

Stolit K 1.0mm tinted render can also be used as an alternative basecoat.  Expand clause to include specific render finish type.

3.33
APPLY STOLIT MILANO FINISHING RENDER

Apply two coats of Stolit Milano finishing render tinted to selected colour.  Apply with a spreading rate of 16-18 m² per pail (25kg).  Finish render to achieve the selected render finish texture.

 Stolit Milano must be applied over a basecoat of Stolit K 1.0mm when used with the StoMiral Render System.  Expand clause to include specific render finish type.

Installation Facade Finish System
3.34
APPLY STOCOLOR FACADE PAINT

Apply two coats StoColor Facade Paint to a clean and dry finished render surface.  Apply paint by brush and roller at approximately 6-7 m² per litre.  Maintain wet edges between cutting in and roll in tight to ensure an even film build is maintained.  Allow for curing between paint coats.

 Select for Stolit K, Stolit MP, Stolit MP Natural or Stolit RMP Sponge finishing renders. StoColor facade paint can also be applied in one coat which will provide a reduced period before re-coating becomes necessary. Omit clause when sealing render with S-Protect SC facade sealer.

3.35
APPLY S-PROTECT SC FACADE SEALER

Apply an even coat of S-Protect SC facade sealer over finished Stolit MP, MP Natural, or Stolit Milano render surface in a flood coat using a low-pressure sprayer and Sto block brush to work sealer into the render.

Select for Stolit MP, MP Natural, or Stolit Milano finishing renders only.  Omit clause when coating render with StoColor facade paint.

Completion & Commissioning
3.36
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 www.sto.co.nz

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

If substitutions are permitted modify the statement above, ensure the NO SUBSTITUTIONS clause from GENERAL is treated the same.

 

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

Materials
4.1
STOARMOUR FACADE PANEL SYSTEM WITH STOMIRAL RENDER

Location:

~

Brand / Type:

StoArmour Facade Panel System with StoMiral Render

Supplier:

Stoanz Ltd

 

StoArmour Panel System:

Framing type:

~

Cavity batten type / size:

StoTherm ~ mm x ~mm

Panel type / size:

StoArmour ~ mm x 600mm x 2200mm

Panel sealer type:

S Protect WS 205

 

StoMiral Render System:

Basecoat render type:

StoLevell Novo

Mesh type / size:

Sto Mesh 4mm x 4mm

Render sealer type:

StoPlex W

Finishing render type:

Stolit ~

Finishing render colour:

~

Render finish texture:

~

 

Facade Finish System:

Facade finish type:

~

Facade finish colour:

~

 

StoArmour Panel System:

Framing type:

Timber framing

 

Steel framing

Cavity batten type / size:

20mm x 50mm

 

40mm x 50mm

Panel type / size:

50mm (thick)

 

75mm (thick)

 

StoMiral Render System:

Finishing render type:

Stolit K 1mm  / 1.5mm / 2mm / 3mm

 

Stolit MP / Stolit MP Natural / Stolit RMP Sponge

 

Stolit Milano

Finishing render colour:

Choose colour shade from StoColor System or AC Architectural Colour range.

Render finish texture:

Refer to Sto Technical Data Sheet for texture options.

 

Facade Finish System:

Facade finish type:

Facade paint:

 

StoColor Maxicryl

 

StoColor Lotusan®

 

StoColor Lastic

 

StoColor X-Black

 

Facade sealer (Stolit MP, MP Natural, Stolit Milano):

 

S-Protect SC

Facade finish colour:

Facade paint:

Choose colour shade from StoColor System or AC Architectural Colour range.

(Note: Colour shade need to be within certain LRV range and depend on the system used.  StoColor X-black is a heat reflective façade paint and is suitable for darker colour applications.  StoMiral Render System over 50mm and75mm panel requires minimum LRV of 15%.  Use StoColor X-black for colours with less than 25% LRV but above 10%.

 

Facade sealer (Stolit MP, MP Natural, Stolit Milano):

Clear

4.2
STOARMOUR FACADE PANEL SYSTEM WITH STOARMAT MIRAL RENDER

Location:

~

Brand / Type:

StoArmour Facade Panel System with StoArmat Miral Render

Supplier:

Stoanz Ltd

 

StoArmour Panel System:

Framing type:

~

Cavity batten type / size:

StoTherm ~ mm x ~mm

Panel type / size:

StoArmour ~ mm x 600mm x 2200mm

Panel sealer type:

S Protect WS 205

 

StoArmat Miral Render System:

Basecoat render type:

StoLevell Novo

Reinforcement render type:

StoArmat

Mesh type / size:

Sto Mesh 4mm x 4mm

Render sealer type:

StoPlex W

Finishing render type:

Stolit ~

Finishing render colour:

~

Render finish texture:

~

 

Facade Finish System:

Facade finish type:

~

Facade finish colour:

~

 

StoArmour Panel System:

Framing type:

Timber framing

 

Steel framing

Cavity batten type / size:

20mm x 50mm

 

40mm x 50mm

Panel type / size:

50mm (thick)

 

75mm (thick)

 

StoArmat Miral Render System:

Finishing render type:

Stolit K 1mm  / 1.5mm / 2mm / 3mm

 

Stolit MP / Stolit MP Natural / Stolit RMP Sponge

 

Stolit Milano

Finishing render colour:

Choose colour shade from StoColor System or AC Architectural Colour range.

Render finish texture:

Refer to Sto Technical Data Sheet for texture options.

 

Facade Finish System:

Facade finish type:

Facade paint:

 

StoColor Maxicryl

 

StoColor Lotusan®

 

StoColor Lastic

 

StoColor X-Black

 

Facade sealer (Stolit MP, MP Natural, Stolit Milano):

 

S-Protect SC

Facade finish colour:

Facade paint:

Choose colour shade from StoColor System or AC Architectural Colour range.

(Note: Colour shade need to be within certain LRV range and depend on the system used.  StoColor X-black is a heat reflective façade paint and is suitable for darker colour applications.  StoArmat Miral Render System over 50mm and 75mm panel requires minimum LRV of 10%.  Use StoColor X-black for colours with less than 10% LRV but above 4%.

 

Facade sealer (Stolit MP, MP Natural, Stolit Milano):

Clear

Components
4.3
WEEPHOLE VENT

Location:

~

Brand / Type:

~ / ~

Material:

~

Size:

~

Centres:

~ mm

Confirm Brand / Type, Material and Size of weephole vent.  Confirm project relevant centres, so that vents achieve minimum ventilation of 1000mm² per lineal metre in cavity.

Fixings
4.4
STO AAC SCREWS - TIMBER FRAMING

Location:

~

Material:

~

Head:

14mm

Shank:

5.1mm

Length:

~

Material:

Stainless steel, Grade 304 (Exposure Zone D defined in NZS 3604)

 

Hot-dip galvanized steel, AS 3566 Corrosion Class 4 (Exposure Zone B and C defined in NZS 3604)

Length:

100mm (suitable for 50mm StoArmour Panel over 20mm StoTherm cavity battens)

 

125mm (suitable for 75mm StoArmour Panel over 20mm StoTherm cavity battens)

 

120mm (suitable for 50mm StoArmour Panel over 40mm StoTherm cavity battens)

4.5
STO AAC SCREWS - STEEL FRAMING

Location:

~

Material:

~

Type:

Type 17, self-drilling

Head:

14mm

Shank:

5.1mm

Length:

~

Material:

Stainless steel, Grade 304 (Exposure Zone D defined in NZS 3604)

 

Hot-dip galvanized steel, AS 3566 Corrosion Class 4 (Exposure Zone B and C defined in NZS 3604)

Length:

100mm (suitable for 50mm StoArmour Panel over 20mm StoTherm cavity battens)

 

125mm (suitable for 75mm StoArmour Panel over 20mm StoTherm cavity battens)

 

120mm (suitable for 50mm StoArmour Panel over 40mm StoTherm cavity battens)

Fire barriers
4.6
FIRE BARRIERS - VENTILATED CAVITY CONSTRUCTION

Location:

~

Brand / Type:

~

Installation:

~

Alter clause to reference 7382 FIRE STOPPING SYSTEMS if used for fire barrier specification (not available in all Masterspec Systems).

Brand / Type:

Ensure strips are suitable for use with the substrate and cavity width.

Installation:

To manufacturer's installation requirements.  Typically, SS screw fixed to the back of cavity between battens.  Provide specific detail.