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

The following abbreviations apply specifically to this section:

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

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

Manufacturer/supplier contact details

Provide a material manufacturer/supplier warranty:

• 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.

Provide a material manufacturer/supplier warranty:

• 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.

Workers to be registered by manufacturer/supplier.  Refer to 1270 CONSTRUCTION for additional requirements relating to qualifications.

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

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:

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

• Stoanz Ltd. StoService Assurance Maintenance Guide

Provide this information prior to practical completion.

Installer/applicator to maintain quality control system to manufacturer/supplier requirements, including but not limited to:

• Complete a StoQuality Assurance Schedule

Make available quality control records if requested by the contract administrator or consenting authority.

Provide the following compliance documentation:

• Producer Statement - Construction (PS3) from the applicator / installer
• Other information required by the BCA in the Building Consent Approval documents.

StoArmat Miral Render System and StoMiral Render System have been appraised as meeting provisions of the NZBC when used within the Conditions and Limitations of its BRANZ Appraisal 515.

StoArmat Miral Render System and StoMiral Render System has been tested to ISO 5660.1, AS/NZS 3837, and to specific requirements of BPS, 8.4.1 Cladding materials, achieving:
Type A classification (peak heat release rate ≤ 100 kW/m², total heat release rate ≤ 25 MJ/m²).

Lightweight, cement-based, mineral basecoat render supplied in 15kg bags.  The material contains mineral aggregates, lightweight fillers, water retention agents, adhesive compounds, fine EPS beads and other additives to form a solid levelling/straitening, basecoat plaster.

Lightweight, cement-based, mineral basecoat render supplied in 20kg bags.  The material contains mineral aggregates, water retention agents, adhesive compounds, EPS beads and other additives to form a solid levelling/straitening, basecoat plaster.

Alkali-resistant 165g/m² fibreglass mesh in 50 metre rolls.

Aqueous acrylate universal consolidating sealer with siloxane additive.

Aqueous copolymer dispersion binder in a pail that when mixed with Portland cement forms a waterproofing plaster mortar that is applied with mesh.  The material contains a copolymer synthetic binder, mineral fillers, fibre and enhancement additives.

Reinforcement plaster in a pail with a calibration grain. A white non cement flexible meshing plaster containing organic fillers and fibres bound in a polymer dispersion to form a malleable crack resistant intermediate plaster with excellent adhesion qualities.

Six different coloured finishing renders (as selected) in a pail. Containing organic aggregates and fibres bound in a polymer dispersion with enhancement agents and colouring pigments.  Refer to SELECTIONS for texture and colour.

Matt coloured pure acrylate facade paint.  Brush, roller or spray applied.  Refer to SELECTIONS for colour.

Matt, acrylic facade paint with biometric principles for dry facades.  Brush, roller or spray applied.  Use temperature regulating X-black for dark colours.  Refer to SELECTIONS for colour.

Clear, invisible Silane sealer for ease of cleaning and added protection against staining of coloured sponge finishes (Note: were a clear coating is required contact Stoanz Ltd).

Satin, clear, acrylic coating, natural looking (no darkening) sealer with excellent resistance to weathering as a clear coating for honed (architectural) concrete blocks.

Lime based plaster in a bag applied by hand or pump for finishing interior masonry surfaces to a straight even plane, with properties to regulate ambient climate.

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 masonry construction requirements.

Sto uPVC flashings are to be used for weatherproofing the exterior plaster at transitions, junctions, terminations and for forming corners and drip edges.

Sto uPVC 8mm or 12mm uPVC control joint.

Polystyrene shapes used to create decorative detailing, fixed using a suitable construction adhesive or glue plaster applied to the shape prior to placing over the mesh coat.

An expanding polyurethane foam impregnated Inseal tape for weatherproofing joints.

BRANZ appraised modified silicone (MS) sealant.

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

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.

Check work previously carried out and confirm it is of the required standard for specified finish.  Carry out such additional preparatory work as required to bring the substrate to suitable condition.

Refer to the general section 1270 CONSTRUCTION for general requirements.

Install render system in accordance with StoArmat Miral Render System specification.

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

Install all Sto uPVC flashings to joinery and terminations as required.  Glue into position with construction adhesive prior to plaster application commencing or install in mesh coat application.

Before commencing fill voids or damage in masonry surfaces with LevelLite plaster to reinstate substrate.  On EPS / ICF blocks rasp off any degraded poly surfaces and foam fill any gaps or holes and allow to set before rasping level.

All penetrations such as waste pipes, electrical wiring in uPVC conduits and metal plumbing piping install with a minimum 5° downward slope, through the Sto plaster system, to be sealed using a double application of MS sealant.

Provide control joints in the plaster system to coincide with control joints in the substrate and/or junctions between dissimilar materials or where shown on the drawings and to Stoanz Ltd requirements.  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.

Architectural profiles (normally pre-meshed poly mouldings) used to create detailing or cover or inter-storey joints (panel construction) are to be fixed 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.

All junctions between joinery / adjacent surfaces / dissimilar materials sections and the plaster mesh coat, and around penetrations shall be sealed with MS sealant.  Allow to cure before applying finishing plaster.

Before the installation of door and window joinery waterproof the masonry recess/rebates with two coats of StoFlexyl correctly mixed with Portland cement.  The sill is required to be mesh reinforced from the bottom of the rebate out to the edge of the sill and turned up the jambs by 40mm.

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

Apply one levelling/straightening coat of StoLevell Novo or LevelLite basecoat plaster by hawk and trowel or pump at an approximate thickness 5-15mm for StoLevell Novo or 8-20mm for LevelLite using screed guides and stainless steel corners as required.  Rule or screed the surface to achieve a level plane ensuring the minimum thickness is achieved.

A minimum slope of 10° is required on all horizontal surfaces.  To StoLevell Novo or LevelLite base coated surfaces apply Sto Flexyl / meshed waterproofing correctly mixed with Portland cement and extend 75mm up and down any adjacent vertical plaster surfaces.  Allow to dry and apply the StoArmat mesh coat.  Sto Flexyl waterproofing must attain a minimum thickness of 1.5mm to meet E2/AS1 and AS/NZS 4858.  For concrete foundation details Sto Flexyl is applied extending 200mm above ground to 100mm past the finished plaster system.

To dry base coasted surfaces, apply StoArmat reinforcement plaster at approximate thickness of 1.5 / 2mm.  While plaster is still wet lightly embed Sto mesh ensuring adjacent drops of mesh are overlapped by a minimum of 75mm.  Float surface to ensure mesh is embedded onto the StoArmat coat, allow to dry then apply one further coat of StoArmat at approximately 1mm thick to leave the plane even surface free of voids or deviations.  Once dry remove any slight ridging with a Sto rasp.  Install Sto pre meshed uPVC drip edges and corner angles on concrete masonry joinery lintels and edges.

Apply selected Stolit K, MP or Milano 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, MP Natural or Milano in two coats and finish with a float and judicial use of a damp sponge.

Apply one coat of StoColor Maxicryl or StoColor Dryonic matt facade paint tinted to the selected colour on Stolit K renders, or S-Protect SC easy clean sealer on MP or Milano finishes.

Apply StoLevell Calce System at 4 - 8mm to achieve a level plane surface free of hollows or an off the trowel adobe finish.  Fit galvanized/stainless steel corner profiles set in plaster anchor dabs at corners, doors and other junctions as required, and mesh any stress points.  Polish plaster to finish required or alternatively an adobe sponge finish can be achieved by structuring the plaster to the selected finish.  Seal with natural wax, clear seal, paint or apply selected finishing render.

The render bricks are to be clean and free of all surface contaminates before plastering commences and shall be cured enough to accept the base/mesh coat plaster.  Any minor surface damage to be repaired with LevelLite.  All mortar joints to be flushed finished.

To clean dry and cured brick surface, apply one levelling/straightening coat of StoLevell Novo or LevelLite base plaster at the required thickness of 6 / 10mm using guides and corners as required.  Rule or screed the surface to achieve a level plane surface free of hollows and deviations and 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 encapsulated into the plaster.

A minimum slope of 10° is required on all horizontal surfaces. To basecoat plastered surfaces apply Sto Flexyl / meshed waterproofing correctly mixed with Portland cement extending 75mm up and down any adjacent vertical plaster surfaces.  Allow to dry and apply a StoArmat mesh coat.  Sto Flexyl waterproofing must attain a minimum thickness of 1.5mm to meet E2/AS1 and AS/NZS 4858.

To clean dry base coated surfaces apply one coat of Sto Stoplex W primer by brush and roller to seal the basecoat surface.

To dry prepared base coated surfaces apply one even coat of StoArmat reinforced plaster at approximate thickness 1.5 / 2mm.  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 encapsulated into the plaster.  Allow to dry and apply one further coat of StoArmat at approximate thickness of 1mm.  Once dry remove any slight ridging with a Sto rasp.

Apply selected Stolit K,MP or Milano 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, MP Natural or Milano in two coats and finish with a float and judicial use of a damp sponge.

Apply one coat of StoColor Maxicryl or StoColor Dryonic S matt facade paint tinted to the selected colour on Stolit K renders, or S-Protect SC easy clean sealer on MP or Milano finishes.

All surfaces must be rasped where necessary to remove excess bonding, mortar or nibs on the surface and to ensure that all panel joints are flush and true.  Any minor surface damage can be fixed using plaster.

To clean dry AAC surfaces apply one coat of S-Protect WS 205 sealer by brush and roller or garden sprayer to seal the surface.

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

To clean sealed autoclaved aerated concrete surfaces, apply one levelling/straightening coat of StoLevell Novo basecoat render at the required thickness of 5 - 7mm using guides and corner angles as required.  Rule or screed the plastered surface to achieve a level plane surface free of hollows and deviations.

A minimum slope of 10° is required on all horizontal surfaces.  To base coated surfaces apply Sto Flexyl / meshed waterproofing correctly mixed with Portland cement extend 75mm up and down any adjacent vertical plaster surfaces.  Allow to dry and apply the StoArmat mesh coat.  Sto Flexyl waterproofing must attain a minimum thickness of 1.5mm to meet NZBC E2/AS1 and AS/NZS 4858.  For concrete foundation details Sto Flexyl is applied extending 100mm past the finished plaster system.

To dry base coated surfaces apply one even coat of StoArmat reinforcement plaster at approximate thickness 1.5 / 2mm.  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 StoArmat at approximate thickness of 1mm.  Once dry remove any slight ridging with a Sto rasp.

Apply selected Stolit K, MP or Milano 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, MP Natural or Milano in two coats and finish with a float or finishing trowel and judicial use of a damp sponge as required.

Apply one coat of StoColor Maxicryl or Stocolor Dryonic S matt facade paint tinted to the selected colour on Stolit K render, or S-Protect SC easy clean sealer on MP or Milano finishes.

Allow minimum 28 days for concrete infill to cure before application of plaster system.  All surfaces must be rasped to remove the surface skin and any UV light degraded ICF.  Before fixing window and door joinery to concrete formed reveals apply Sto Flexyl / mesh from the bottom of the reveal turning out onto the ICF block face.  Surface defects, voids and gaps in the ICF blocks to be stopped flush using Sto Adhesive Foam and rasped back once dry.

A minimum slope of 10° is required on all horizontal surfaces.  To base coated surfaces apply Sto Flexyl / meshed waterproofing correctly mixed with Portland cement extend 75mm up and down any adjacent vertical surfaces.    Allow to dry and apply StoArmat mesh coat.  Sto Flexyl waterproofing must attain a minimum thickness of 1.5mm to meet NZBC E2/AS1 and AS/NZS 4858.  For ground tanking Sto Flexyl / mesh must extend 100mm past the finished plaster system.

To clean dry and prepared block surface, apply one straightening coat of Stolevell Novo basecoat plaster at the required thickness 5 - 8mm using guides and corner angles as required.  Rule or screed the surface to achieve a level plane surface free of hollows and deviations.  Once dry, seal the basecoat with Stoplex W before installing the mesh coat.

To dry base coated surfaces apply StoArmat reinforcement plaster at approximate thickness of 1.5 - 2mm.  While plaster is still wet lightly embed Sto mesh ensuring adjacent drops of mesh are overlapped by a minimum of 75mm.  Float surface to ensure mesh is embedded onto the StoArmat coat, allow to dry then apply one further coat of StoArmat at approximately 1mm thick.  Once dry remove any slight ridging with a Sto rasp.  Install Sto pre meshed uPVC drip edges and corner angles on concrete masonry joinery lintels and edges.

Apply selected Stolit K, MP or Milano 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, MP Natural or Milano in two coats and finish with a float and judicial use of a damp sponge.

Apply two coats of StoColor Maxicryl or StoColor Dryonic S matt facade paint tinted to the selected colour on Stolit K render, or S-Protect SC easy clean sealer on MP and Milano finishes.

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