4285SP
STO POREN BRICK VENEER 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 fixing of Sto Poren Brick Veneer System using Poren Bricks to achieve a lightweight masonry brick veneer construction.

It includes:

Suitable for residential and commercial single and two storeyed buildings.  The system is based on traditional brick veneer construction cosisting of masonry units dimensionally larger than the standard brick.

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

1.1
RELATED WORK

Refer to ~ for ~

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

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

ICF

Insulating Concrete Formwork

LRV

Light Reflectance Value

MPNZA

Master Painters New Zealand Association

LBP

Licensed Building Practitioner

RBW

Restricted Building Work

Documents
1.3
DOCUMENTS

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

NZBC B2/AS1

Durability

NZBC C/AS1-AS7

Protection from fire

NZBC E2/AS1

External moisture

AS/NZS 1170

Structural design actions

AS/NZS 1170.2

Structural design actions - Wind actions

AS/NZS 2699.1

Built-in components for masonry construction - Wall tiles

NZS 3602

Timber and wood-based products for use in building

NZS 3603

Timber structures standards

NZS 3604

Timber-framed buildings

NZS 4210

Masonry construction: Materials and workmanship

AS/NZS 4600:2005

Cold formed steel structures

AS/NZS 4858

Wet area membranes

WorkSafe NZ

Guidelines for the provision of facilities and general safety in the construction industry

MPNZA

Health and Safety Programme

Health and Safety at Work Act 2015

NZ NASH Standard Residential and low-rise steel framing Part 1: Design Criteria

AS/NZS 4600:2005 is cited by NZBC, but AS/NZS 4600:2018 has not at the time of writing been cited by NZBC. This section uses the 2005 version as an Acceptable Solution; consult with the BCA as to their requirements if you want to use the 2018 version as an Alternative Solution.

 

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

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

AS/NZS 2311

Guide to the painting of buildings

NZBC F2/AS1

Hazardous building materials

BRANZ BU 314

Removing paint coatings from houses

BRANZ BU 570

Ground clearances

WGANZ Window Installation Guide

Guide to Window Installation as described in E2/AS1 Amendment 7

1.4
MANUFACTURER/SUPPLIER DOCUMENTS

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

Sto Manual including specification and CAD details

Sto Technical data sheets

StoQuality Assurance Document

BRANZ Appraisal 739

Sto Poren Brick Veneer Cladding System

BRANZ Test No. DC1182 StoFlexyl waterproofing to AS/NZS 4858

BRANZ Fire Test FH 5008 StoPoren Plaster, NZBC C/AS1-AS7, 5.8 External Surface Finishes - pass

BRANZ Fire Test FH 5009 StoArmat Plaster, NZBC C/AS1-AS7, 5.8 External Surface Finishes - pass

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

 

technical@sto.co.nz

Telephone:

04 801 7794

 

04 801 4741

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:

For materials supplied by Stoanz Ltd

20 years:

For materials in the StoArmat Plaster System

 

  • Provide this warranty on the Sto standard form including Sto Contractor PS3.
  • 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:

5 years:

For execution and workmanship

 

  • Provide Sto Contractor PS3 warranty as part of Sto Warranty documentation.
  • The Sto Contractor must complete a Sto Quality Assurance Document pre-warranty.
  • 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

The contractor is to be registered by Sto and experienced in the installation and application of the Sto Poren Brick Veneer System.

All brick veneer work to be installed or supervised by a Registered Mason or licensed building practitioner (LBP): Licensed for Bricklaying and Blocklaying 1: Brick/masonry Veneer.  RBW must be supervised by an LBP.

1.8
NO SUBSTITUTIONS

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

1.9
PROTECTION OF NEW PLASTER

Provide protection systems as required by the manufacturer to protect fresh plaster from adverse weather conditions.

Normally required curing procedures can be altered when acrylic-modified plasters (bonding agents) have been specified.  Such plasters may only need limited protection from direct sun and strong, drying winds.  Consult the manufacturer's requirements in this clause or write another.

1.10
INSPECTIONS

Allow to inspect the whole of the work at each stage. Determine a programme for inspections including notification when each part and stage of the work is ready for inspection prior to the work commencing.

 

Permit representatives of Sto to inspect the work in progress and to take samples of their products from site if requested.  Refer to Sto manual or web site for details.

The level of inspection will depend on the nature of the project and will range from full for large or complex projects, through to intermittent for straightforward work, to occasional for initially establishing the standards of execution.  Refer to AS/NZS 2311 Appendix C, Inspection and Testing, for more background.

1.11
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 600mm x 200mm Poren brick with 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.

1.12
INFORMATION FOR OPERATION AND MAINTENANCE

Provide Sto Poren Maintenance Schedule with Sto Warranty documents on practical completion for issuing to the building owner and Building Consent Authority.

A copy of the maintenance instructions may be required by the Building Consent Authority with the building consent application.

1.13
HEALTH AND SAFETY

Refer to the requirements of the Health and Safety at Work Act 2015 and WorkSafe NZ:  Guidelines for the provision of facilities and general safety in the construction industry.

If the elimination or isolation of potential hazards and risks is not possible then minimise hazards and risks in this work on site by using the proper equipment and techniques as required in the MPNZA Health and Safety Programme.  Supply protective clothing and equipment.  Inform employees and others on site of the hazards and risks, and put into place procedures for dealing with emergencies.  Obtain from Stoanz Ltd the material safety data sheets for each product.  Keep sheets on site and comply with the required safety procedures.

Compliance information
1.14
DURABILITY

The work covered by this part of the specification has been designed and constructed to meet the NZBC durability requirement of 15 years with a serviceability life in excess of 30 years when maintained.  Refer to the following:

BRANZ Appraisal 739

Sto Poren Brick Veneer Cladding System

1.15
INFORMATION REQUIRED FOR CODE COMPLIANCE

Provide the following compliance documentation: -

  • Sto Warranty document package including Sto warranty, Sto Contractors PS3 warranty and Sto Maintenance Schedule
  • 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 - wind

The next two mutually exclusive clauses, are setting a standard of performance for design by the contractor to meet.  Specifiers should therefore consider adding some means of confirming (say by testing or certification) that the performance criteria will be or have been met.  Delete the clause which does not apply.

Ensure correct information is supplied in 1220 PROJECT.

1.16
DESIGN PARAMETERS - NON SPECIFIC DESIGN

Design the framing to the wind zone parameters of NZS 3604, table 5.4.

Refer to general section 1220 PROJECT for details.

Delete the clause if using DESIGN PARAMETERS - SPECIFIC DESIGN.

1.17
DESIGN PARAMETERS - SPECIFIC DESIGN

Design the framing to the wind pressure parameters of AS/NZS 1170.2.

Refer to general section 1220 PROJECT for details.

Obtain information from the project structural engineer.

Delete the clause if using DESIGN PARAMETERS - NON SPECIFIC DESIGN.

1.18
DESIGN PARAMETERS - STO POREN BRICK VENEER

The Sto Poren Brick Veneer when fixed in accordance with the Sto Poren manual and specifications has been accessed by BRANZ to differential design ULS wind pressure of extra high (2.13 kPa or 55 m/s)

Obtain information from the project structural engineer for wind zones in excss of 2.13kPa

Tests
1.19
TESTS

Refer to the following:

  • BRANZ Test No. DC1182 StoFlexyl waterproofing to AS/NZS 4858 for waterproof membranes
  • BRANZ Fire Test FH 5008 StoPoren Plaster, NZBC C/AS1-AS7, 5.8 External Surface Finishes - pass
  • BRANZ Fire Test FH 5009 StoArmat Plaster, NZBC C/AS1-AS7, 5.8 External Surface Finishes - pass
  • BRANZ Poren Mortar brick bond test
  • BRANZ Poren brick tie strength test
  • BRANZ Poren brick internal shear strength evaluation
  • BRANZ Poren brick lintel - bending resistance, support, compressive strength, steel reinforcing corrosion resistance evaluations
2
PRODUCTS
Materials
2.1
POREN BRICK

Poren Brick, manufactured from aerated lightweight concrete with an approximate density of 52kg/m², supplied 600mm x 200mm x 75mm thick.

2.2
POREN LINTEL

Poren steel reinforced lintels, manufactured from aerated lightweight concrete, and supplied 2400mm x 200mm x 75 mm thick.  Note lintels require a minimum 200mm brick seat.

Components
2.3
POREN LINTEL SHELF BRACKET

Hot dipped galvanized steel angle 75mm high x 100mm deep x 310mm wide, to join Poren Lintels when openings exceed 2m.  Shelf brackets are fixed to the timber lintel behind with M10 hot dipped galvanized coach bolts for flitch beams or minimum 75mm coach screws for timber beams.

2.4
SHELF ANGLE ON PARALLEL SLOPING ROOF LINE

Hot dipped galvanized continuous steel angle 75mm high x 100mm deep to support Poren Bricks on a gabled (sloping parallel) roof line.  Shelf angle fixed to timber studs behind with M10 x 75mm hot dipped galvanized coach screws at maximum 600mm centres.

2.5
POREN BRICK TIES

To AS/NZS 2699.1, veneer ties minimum grade EM screw fixed to framing.

 

Note: In coastal locations where Exposure Zones apply and are defined in NZS 3604 as Zone D (and some microclimatic conditions such as geothermal areas), shelf brackets, shelf angles, metal lintels, brick ties and screw fixings shall be in accordance with NZBC E2/AS1, Tables 18C and 18D.

2.6
FLASHINGS

Head, jamb, sill and any other required flashings made from powder coated aluminium, stainless steel or uPVC supplied by main contractor for timber, aluminium and uPVC joinery to NZBC E2/AS1 and specific construction requirements.

2.7
STO FLASHINGS AND COMPONENTS

Sto uPVC flashings, finishing edges, trays, etc to be used for weatherproofing exterior plaster at joinery transitions, junctions, terminations, cavities and for forming corners and drip edges.

2.8
STO CONTROL JOINTS

Sto uPVC 8mm or 12mm uPVC control joints.

Accessories
2.9
STO POREN MORTAR

Sto Poren Mortar, a polymer modified, cement-based adhesive mortar formulated for Poren Brick construction.  Supplied in 25kg bags and mixed on site with clean water and applied in a 10mm +/- 2mm continuous bedding to bond the bricks and encase brick ties.

2.10
ARCHITECTURAL MOULDINGS

AAC or polystyrene shapes used to create decorative detailing, fixed using AAC construction adhesive or GlueCoat mortar applied to the shape prior to placing over the plaster mesh coat.

2.11
STO JOINT SEAL TAPE

An expanding polyurethane foam waterproof impregnated inseal tape for weatherproofing joints.  Use within sizes 15mm wide - 2mm/6mm or 5mm/12mm joints.

Use as a secondary moisture seal system in conjunction sealants as per the Sto details.

2.12
WATER

Clean, fresh and free from excess alkali, salt, silt and organic materials.

Waterproofing plaster
2.13
STOFLEXYL WATERPROOFING PLASTER

StoFlexyl, a cementitious dispersion leveller containing additives and binders mixed 1/1 with Portland Cement.

Used for warerproofing parapets, balustrades, horizontal surfaces and foundation rebates.

StoPoren plaster system
2.14
S-PROTECT WS205 SILANE

S-Protect WS205 Silane, a European silane sealer with water repelling properties.

2.15
STOPOREN PLASTER

StoPoren Plaster 4/5mm, a European designed fibre reinforced AAC mineral plaster with good adhesion properties, water retention agents and machine application properties, 4mm to 5mm thick.

2.16
STO EUROPEAN REINFORCING MESH

Alkali-resistant fibreglass woven reinforcing mesh with a nominal mesh size of approximately 4mm x 4mm or 6mm x 6mm and an approximate weight of 165g/m².

2.17
STOPLEX W SEALER

StoPlex W Sealer, a consolidating primer with siloxane additives.  Deep penetration for consolidation with absorbency regulating and water repelling properties.

2.18
STOLIT K & MP COLOURED FINISHING RENDERS

European fibre reinforced coloured finishing renders in a pail.  Organic bound, strong, hardwearing, impact resistant coloured finishing render, available in 6 finishes.  Refer to SELECTIONS for texture and colour range.

2.19
STOCOLOR MAXICRYL FACADE PAINT

Matt coloured pure acrylate facade paint.  Natural looking matt, hard, durable, coating with excellent resistance to weathering.  Refer to SELECTIONS for colour.

2.20
S-PROTECT SC STAY CLEAN

Clear, invisible Silane sealer for added protection against staining of coloured sponge finishes.

Select for sealing Stolit MP or MP Natural renders.

StoArmat Miral plaster system
2.21
S-PROTECT WS205 SILANE

S-Protect WS205 Silane, a European silane sealer with water repelling properties.

2.22
STOPOREN BASECOAT PLASTER

StoPoren Plaster 4/5mm, a European designed fibre reinforced AAC mineral plaster with good adhesion properties, water retention agents and machine application properties, 4mm to 5mm thick.

2.23
STOARMAT CLASSIC REINFORCEMENT PLASTER

StoArmat Classic Reinforcement Plaster, a European manufactured, fibre reinforced, strong, flexible, impact resistant, white reinforcing plaster containing a calibration grain to ensure correct mesh plaster thickness.

2.24
STO EUROPEAN REINFORCING MESH

Alkali-resistant fibreglass woven reinforcing mesh with a nominal size of 4mm x 4mm or 6mm x 6mm square and a weight of 160 g/m².

2.25
STOLIT K & MP COLOURED FINISHING RENDERS

European fibre reinforced coloured finishing renders in a pail.  Organic bound, strong, hardwearing, impact resistant coloured finishing render, available in 6 finishes.  Refer to SELECTIONS for texture and colour range.

2.26
STOCOLOR MAXICRYL FACADE PAINT

Matt coloured pure acrylate facade paint.  Natural looking matt, hard, durable, coating with excellent resistance to weathering. Refer to SELECTIONS for colour.

2.27
S-PROTECT SC STAY CLEAN

Clear, invisible Silane sealer for added protection against staining of coloured sponge finishes.

Select for sealing Stolit MP or MP Natural renders.

3
EXECUTION
Conditions
3.1
SUBSTRATE - TIMBER FRAMING

Check framing to NZS 3604 for Non Specific Design or to NZS 3603 and AS/NZS 1170 for Specific Design.
Do not commence work until the framing is of the standard required for the specified finish; plumb, level and in true alignment.  Moisture content of timber framing must not exceed the requirements specified by NZS 3602 to minimise shrinkage and movement after the bricks are fixed.  Studs are not to exceed 600mm centres and nogs fitted flush at a maximum of 800mm centres.  In Extra High Wind Zones and where Specific Design applies studs shall be at a maximum of 400mm centres.  Wall underlay to comply with NZBC E2/AS1 including Table 23.

Main contractor to confirm framing has moisture content of a maximum of 24% prior to commencing installation.

3.2
SUBSTRATE - STEEL FRAMING

Check framing to NZ NASH Standard Residential and low-rise steel framing Part 1: Design Criteria and AS/NZS 4600.

For steel framing C section studs and nogs, the minimum section size to be 75mm x 32mm with a web thickness of 0.75mm.

3.3
STO POREN BRICK SUBSTRATE

Do not commence work until openings and apertures have been cut, pipes, fixtures, fixing bricks have been fixed and underlay flashings and other preparations are complete.  Rectify all defects in substrate prior to application of plaster coatings.  Ensure that backgrounds and adjoining surfaces are, after the preparation called for in this section, is of the required standard for the Sto Poren Brick Veneer System.

3.4
FLASHING AND DETAILING

Comply with NZBC E2/AS1, 4.0 Flashings and Sto Poren penetration flashing guidelines.  Carry out to the required standard of execution to ensure water does not penetrate.

Proprietary head flashings supplied for recessed timber, aluminium and PVC joinery.  Sub-trade penetrations must be flashed and sealed by that trade.

3.5
STANDARDS AND TOLERANCES

Comply with the tolerances laid down in NZS 4210 Table 2.2.  To have no deviation more than 3mm from a straight edge 1200mm long.  Abrupt deviations will not be accepted.

3.6
CONFIRM LAYOUT

Before commencing work confirm the layout of control joints and other visual detailing of the finished work.

3.7
FOUNDATION REQUIREMENTS

Confirm concrete on slab-on-ground to NZS 3604 or NZBC E2/AS1 for brick veneer or Specific Design.  A minimum 50mm rebate is required in the concrete foundation/slab with a depth to allow a 40mm to 75mm cavity.  The minimum distance from the rebate to unpaved ground is 100mm or 25mm to paved ground.

3.8
VENEER HEIGHT

Ensure maximum height of veneer is a maximum of 7.5m above its foundation support, except that at gable ends and some piers this height may be at 10m.  Where veneer is above roofs, maximum permitted height is 4m above the veneer roof line support, or 7.5m above an adjacent building foundation, whichever is the lesser.

Installation - preparatory work
3.9
PENETRATIONS - PREPARATORY WORK

Confirm that exterior wall openings have been prepared correctly for all window and door joinery and other penetrations through the veneer.  Required preparatory work includes the following:

  • Wall underlay installed and dressed into openings with flexible flashing tape ready for the installation of window and door frames and other penetrations
  • Window joinery wider than 600mm requires a joinery support bar
  • Position window and door joinery to sit 10mm to 20mm over the brick veneer (cavity + 10 - 20mm) and attach Sto Stick On sill and jamb flashings before installing bricks
  • Installation of flashings required to be installed prior to brick veneer installation
  • Where electrical cables pass through cavity use conduit so cables can be serviced and penetrations can be flashing taped
  • All penetrations such as water pipes, ducting, light fittings, must be installed with a minimum of 5° outward slope and be flashing taped to the wall underlay by the contractor who installed them.

Refer to the Window & Glass Association NZ (WGANZ) Window Installation Guide. This covers the WGANZ recommendations on the preparation of window/door openings, minimum clearances between rough openings and the window/door frame, dressing of the wall underlay into the prepared opening, application of flexible flashing tape to the sill and top corners of the opening, installation of window/door frames and flashings, sealing of the window/door frame into the opening to create a pressure equalisation cavity, installation of flashings and the maintenance of appropriate clearances between the frame and the surrounding construction.

Penetrations through drained cavities to NZBC E2/AS1: External moisture, 9.1.9 Penetrations and 9.1.10 Windows and doors.

Consult Sto Manual for specifications and CAD details in regards to wall penetrations.

3.10
FLASHING AND ACCESSORIES

Fit Sto jambs and sills flashings to joinery and check contractor supplied head flashings.

Installation - Poren bricks
3.11
INSTALL POREN BRICKS

Install Poren Bricks in accordance with the Sto Manual specifications and CAD details requirements:

  • Install bricks with a 5mm to maximum 20mm overhang to StoFlexyl waterproofed rebate on a maximum 20mm mortar bed maintaining a minimum 40mm cavity
  • Lay bricks true in both vertical and horizontal planes, bed bricks in running bond of Sto Poren mortar with all joinery and service cut outs correctly made using Poren Brick Lintels or cladding infill over any openings
  • Provide mortar joint 10mm +/- 2mm tooled flush with brick surface
  • Fully embed brick ties in mortar joints, install ties a minimum half way through the brick (maximum 15mm from exterior face), screw fix a minimum of 35mm into framing at approximately 5 per square metre at a maximum of 600mm longitudinally (every stud) an a minimum of 400mm centres vertically (every second course)
  • Install snake wire reinforcing at 800mm centres on corners, above large openings, across narrow width and at stress points
  • Allow a curing time of (normally five to seven days weather dependant) after placement, before applying StoPoren Plaster System.
3.12
INSTALL POREN STEEL REINFORCED LINTELS

Install Poren Steel Reinforced Lintels in accordance with Sto Manual specifications and CAD details requirements:

  • For openings up to 2000mm install Poren lintel and allow for a minimum of 200mm brick support on either side of opening with two brick ties 150mm apart at all joins
  • For openings larger than 2000mm install Poren Shelf Bracket bolted to timber lintel in accordance with Sto Poren CAD Details.
3.13
INSTALL POREN STEEL REINFORCED LINTELS

Install Poren Lintels in accordance with Sto Manual specifications and CAD details requirements:

  • Join Poren Lintels on the Poren Shelf Bracket with 10mm Poren Mortar.  Embed brick ties in the mortar bed at a minimum of 600mm centres with two brick ties at joins including ends placed 150mm apart
  • Extend Poren Shelf Bracket across cavity to under seat the Poren Brick by a minimum of 55mm, pack off frame as required and adjust coach screws / bolts accordingly
  • Use Sto Adjustable foot tray as lintel head flashing or Sto Drip Edge to finish underside of the lintel.
3.14
INSTALL CONTROL JOINTS

Provide control joints in the plaster system to Sto Manual specifications and CAD details requirements.  Locate control joints at 6m centres to coincide with the substrate and/or junctions between dissimilar materials or where shown on the drawings.  Reinforce control joint with brick ties placed a maximum of 150mm from the joint at a maximum 400mm horizontal centres.  Insert Sto flexible uPVC 8mm or 12mm control joints in the StoArmat mesh coat ensuring the mesh coat does not overlay the V joint.  Either coat the V joint in the paint system for a negative detail or fill with MS sealant, concave tooled.

Refer to manufacturers technical manual and engineers requirements for the position of substrate control joints and Sto CAD drawings and specification. for positioning / detailing of control joints in the plaster system.

3.15
BALUSTRADE AND PARAPET TOPS / FOUNDATION DETAIL

Provide a minimum slope of 10° on all horizontal surfaces.  Where required Sto Poren 50mm Panel can be used apply StoFlexyl / meshed waterproofing correctly mixed with Portland cement extending 75mm up and down any adjacent vertical plaster surfaces.  Allow to dry and apply the Sto Poren or StoArmat mesh coat.  StoFlexyl waterproofing must attain a minimum thickness of 1.5mm to meet NZBC E2/AS1 and AS/NZS 4858.  For concrete foundation details StoFlexyl is applied from 150mm above ground extending 100mm past the finished plaster system.

3.16
PROVIDE ARCHITECTURAL MOULDINGS

Fix architectural profiles, (normally AAC or pre-meshed poly mouldings) used to create detailing after the substrate has been mesh plastered or waterproofed.  Attach using Gluecoat mortar applied to the back face.  Mechanical fixings may be required for larger or heavy profiles.  All plant on shapes are to be pre-meshed and to be meshed on to the base mesh plasterer before the finishing plastering commences.

3.17
INSTALL UPVC FLASHINGS

Install all Sto pre-meshed uPVC corner angles and finishing edges to external corners and terminations as required.  Bed in StoPoren plaster set straight to line before commencing to install in mesh coat application.

3.18
IRREGULARITIES

Before commencing fill voids or damage in brick surfaces with StoPoren plaster to reinstate substrate.

3.19
PENETRATIONS - SERVICES

Install all penetrations such as waste pipes, electrical wiring in uPVC conduits and metal plumbing piping with a minimum 5° downward slope, through the StoPoren plaster system, and seal using a double application of MS sealant.

3.20
APPLY SEALANT

Seal all junctions between joinery / adjacent surfaces / dissimilar materials sections and the plaster mesh coat, and around penetrations with a BRANZ appraised MS sealant, in accordance with sealant manufacturer's requirements.  Allow to cure before applying finishing plaster.

Use on all plaster systems see Sto CAD drawings and specifications.

Waterproofing system
3.21
APPLY WATERPROOFING SYSTEM

Apply StoFlexyl waterproofing plaster in accordance with Sto Poren Specification and CAD drawings.

Conditions - plaster systems
3.22
DELIVERY

Keep StoPoren bagged plaster products dry in transit.  Take delivery of StoPoren plaster products in good condition.  Reject all damaged materials and immediately notify supplier in writing.

3.23
STORAGE

Deliver all materials in original unopened packaging with labels intact.  Provide dry storage on site, stack carefully, protect from mechanical damage.  Keep bagged render dry and off concrete surfaces.

3.24
PLASTERING CONDITIONS

Carry out plastering to Sto specification under conditions which will not adversely affect the finished work.

Refer to Sto product manual.

3.25
PROTECT

Before commencing, apply masking protection to all joinery, pipes, roofs and adjacent surfaces likely to be marked.  Use covers to keep the working areas clean and remove any contamination of finished work immediately.

3.26
SUBSTRATE

Ensure the main contractor and the sub trades are aware of their responsibilities relating to the required provision of weather tight details at all dissimilar material overlays, junctions, penetrations, clearances and transitions including any blockings or back flashings required (refer to www.sto.co.nz for details).

 

Do not commence work until required openings and apertures have been cut, pipes, fixtures, fixing plates have been installed and flashings and other detailing are complete.  Do not commence plastering until the Sto approved contractor accepts the substrate is of the required standard.

3.27
FLASHING AND DETAILING

Install flashing in accordance with the Sto Poren Brick Veneer flashing details.  Penetrations such as waste pipes and fixing brackets shall be adequately flashed and waterproofed prior to plaster application.  Carry out to the required standard of execution to ensure water does not penetrate.

Flashings made from powder coated aluminium supplied by main contractor for timber, aluminium and PVC joinery if required depending on specific details.  Subtrade penetrations must be detailed, flashed and sealed by that trade.

Plaster systems

Refer to StoPoren specification and technical data sheets for 2 different finishing systems:

 

StoPoren Plaster System: Standard Spec SS500

 

StoArmat Miral Plaster System: Standard Spec SS501

StoPoren Plaster System - standard spec SS500
3.28
SURFACE PREPARATION AND PRE-TREATMENT OF POREN BRICKS

Rasp all surfaces where necessary to remove excess bonding, mortar or nibs to ensure that all brick joints are flush and true. Fix minor surface damage using plaster.

3.29
SEALER

To clean and seal surfaces apply one coat of S-Protect WS 205 Silane sealer by back pack sprayer and block brush to seal the surface.

3.30
CONTROL JOINTS

Mark out all control joints that have been installed in the substrate so that Sto uPVC control joints can be installed in the mesh coat.

Refer to Sto specification and CAD drawings for specific project control joint details.

3.31
BALUSTRADE AND PARAPET TOPS / BASE DETAIL

A minimum slope of 10° is required on all horizontal surfaces.  To sealed surfaces apply StoFlexyl waterproofing correctly mixed with Portland cement extend 75mm up and down any adjacent vertical plaster surfaces and embed Sto mesh before applying a finishing coat.  StoFlexyl waterproofing must attain a minimum thickness of 1.5mm to meet NZBC E2/AS1 and AS/NZS 4858.  For concrete foundation details StoFlexyl is applied from 150mm above ground extending 100mm past the finished plaster system.

3.32
BASE MESH COAT PLASTER

To clean sealed Sto Poren Brick surfaces, apply one levelling/straightening coat of StoPoren base plaster at the 3mm - 4mm setting corner angles as required.  While the plaster is still wet, lightly embed Sto mesh, ensuring adjacent drops of mesh are overlapped by a minimum of 75mm and the mesh is embedded onto the plaster.  Allow to dry and apply one further coat of StoPoren plaster at 2mm to achieve a level plane surface free of hollows and deviations.

Use to level substrate and create straight plane to minimum thickness of 4mm.

3.33
SEALER

To clean dry plastered surfaces apply one coat of Stoplex W sealer by back pack sprayer and block brush to seal the surface.

3.34
COLOURED FINISHING RENDER

Apply selected Stolit K or MP coloured finishing render applied with a stainless steel trowel gauging to the thickness of the aggregate size and finished with a plastic float to the requisite pattern.  Apply Stolit MP or MP Natural in two coats and finish with a float and judicial use of a damp sponge.

Thickness and styles of renders varies between Stolit K- 1 / 1.5 / 2 / 3mm & Stolit MP/MP Natural - sponge.  Refer to SELECTIONS to choose required finishing render and preferred finish.

3.35
STOLIT K FAÇADE PAINT

Apply one coat of StoColor Maxicryl matt facade paint tinted to the selected colour on Stolit K render.

Refer to SELECTIONS for preferred finish.

3.36
STOLIT MP SEALER COAT

Apply one coat S-Protect SC stay clean sealer on MP finishes.

Refer to SELECTIONS for preferred finish.

StoArmat Miral Plaster System - standard spec SS501
3.37
SURFACE PREPARATION AND PRE-TREATMENT OF POREN BRICKS

Rasp all surfaces where necessary to remove excess bonding, mortar or nibs to ensure that all brick joints are flush and true.  Fix minor surface damage using plaster.

3.38
PANEL SEALER

To clean dry panel surfaces apply one coat of S-Protect WS 205 Silane sealer by back pack sprayer and block brush to seal the surface.

3.39
CONTROL JOINTS

Mark out all control joints that have been installed in the Sto Poren Brick substrate so that Sto Poren uPVC control joints can be installed in the mesh coat.

Refer to Sto specification and CAD drawings for specific project control joint details.

3.40
BASECOAT PLASTER

To clean sealed surfaces, apply one levelling/straightening coat of StoPoren base plaster at approximate thickness of 4mm - 6mm setting corner angles and finishing edges as required to achieve a level plane surface free of hollows and deviations.

Use to level substrate and create straight plane to minimum thickness of 3mm.

3.41
MESHED REINFORCEMENT PLASTER

To dry Sto Poren surfaces apply one even coat of StoArmat reinforcement plaster at approximate thickness 1.5mm / 2mm.  While the plaster is still wet, lightly embed Sto European mesh, ensuring adjacent drops of mesh are overlapped by a minimum of 75mm and the mesh is embedded onto the plaster.  Allow to dry and apply one further coat of StoArmat at approximate thickness of 1.5mm.  Once dry remove any slight ridging with a Sto rasp.

3.42
BALUSTRADE AND PARAPET TOPS / BASE DETAIL

A minimum slope of 10° is required on all horizontal surfaces.  To basecoat plastered surfaces apply StoFlexyl waterproofing correctly mixed with Portland cement extend 75mm up and down any adjacent vertical plaster surfaces and embed Sto mesh before applying a finishing coat.  StoFlexyl waterproofing must attain a minimum thickness of 1.5mm to meet NZBC E2/AS1 and AS/NZS 4858.  For concrete foundation details StoFlexyl is applied from 150mm above ground extending 100mm past the finished plaster system.

3.43
COLOURED FINISHING RENDER

Apply selected Stolit K or MP coloured finishing render applied with a stainless steel trowel gauging to the thickness of the aggregate size and finished with a plastic float to the requisite pattern.  Apply Stolit MP or MP Natural in two coats and finish with a float and judicial use of a damp sponge.

Thickness and styles of renders varies between Stolit K- 1 / 1.5 / 2 / 3mm & Stolit MP/MP Natural - sponge.  Refer to SELECTIONS to choose required finishing render and preferred finish.

3.44
STOLIT K FAÇADE PAINT

Apply one coat of StoColor Maxicryl matt facade paint tinted to the selected colour on Stolit K render.

Refer to SELECTIONS for preferred finish.

3.45
STOLIT MP SEALER COAT

Apply one coat S-Protect SC stay clean sealer on MP finishes.

Refer to SELECTIONS for preferred finish.

Completion
3.46
ROUTINE CLEANING

Regularly remove debris, unused materials and other elements from the site relating to the plaster system application.  Replace damaged or marked elements leaving the whole of this work to the required standard.

Use this standard generic clause and add additional specific requirements.

ESD note:  Re-cycling is addressed in the general section 1256 WASTE MANAGEMENT; amend this clause if it is to apply to this section.

3.47
FINAL INSPECTION

A final inspection by the contractor administrator and Sto contractor of the entire finished Sto Poren Brick Veneer System to take place immediately after completion of the work and any defects or subsequent damage made good immediately.

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
POREN BRICKS

Location:

~

Supplier:

Stoanz Ltd

Brand:

Poren Bricks

Size/thickness:

600mm x 200mm x 75mm thick

Waterproofing system
4.2
STOFLEXYL WATERPROOFING PLASTER

Location:

~

Supplier:

Stoanz Ltd

Brand:

StoFlexyl

Plaster systems
4.3
STOPOREN PLASTER SYSTEM - STANDARD SPEC SS500

Location:

~

Supplier:

Stoanz Ltd

Substrate:

~

Primer coat:

S-Protect WS 205 silane sealer

Base mesh coat:

StoPoren 4mm-5mm meshed basecoat plaster

Sealer:

Stoplex W sealer

Aggregate render:

Stolit K ~ finished in one coat of StoColor Maxicryl façade paint

Sponge render:

Stolit MP ~ sealed with one coat of S-Protect stay clean sealer

Colour:

~

Options:

Substrate:

Bricks to straighten

Finishing renders:

Select render type, size and colour:

 

Stolit K is a coloured finish render select 1 / 1.5 / 2 / 3mm (aggregate)

 

Stolit MP is fine plain coloured - MP Natural is sand specked sponge render

Paint or Sealer:

Select Sto Color Maxicryl for Stolit K or Protectosil SC sealer for Stolit MP

Colour:

Refer to Sto.  A minimum light reflective value (LRV) 20% is recommended

4.4
STOARMAT MIRAL PLASTER SYSTEM - STANDARD SPEC SS501

Location:

~

Supplier:

Stoanz Ltd

Substrate:

~

Primer coat:

S-Protect WS 205 silane sealer

Levelling coat:

StoPoren 3mm-5mm basecoat plaster

Mesh coat:

StoArmat meshed reinforcement plaster

Aggregate render:

Stolit K ~ finished in one coat of StoColor Maxicryl façade paint

Sponge render:

Stolit MP ~ sealed with one coat of S-Protect stay clean sealer

Smooth render:

Stolit Milano finished in one coat of StoColor Maxicryl façade paint, or

StoPur WV 200 transparent

Coats:

One

Colour:

~

Options:

Substrate:

Bricks to straighten

Finishing renders:

Select render type, size and colour:

 

Stolit K is a coloured finish render select 1 / 1.5 / 2 / 3mm (aggregate)

 

Stolit MP is fine plain coloured - MP Natural is sand specked sponge render

Paint or Sealer:

Select Sto Color Maxicryl for Stolit K or Protectosil SC sealer for Stolit MP

Colour:

Refer to Sto.  A minimum light reflective value (LRV) 20% is recommended