General

Description of Works/Specification Notes

ROCKCOTE MicroStone creates a natural stone fi nish that exudes elegance across a multitude of spaces. MicroStone can be applied over a range of substrates and surfaces for a bespoke seamless finish. MicroStone is a two-part water-based product;

Properties

• Coverage Rate: 12-14m2/15Ltr @ 1mm build per coat
• Substrates: Plasterboard, Concrete Block, Fibre Cement Sheet
• Abrasive strength: Excellent
• Colour: Available in light base and can be tinted using liquid tints (max. 3%).
• Packaging: Part A 10L : Part B 5L
• Clean up: Water
• Thinning: Add up to 1.5% of clean water to assist with consistency for ease of application or 300ml / per kit.r
• Use by: 6 months from date of manufacture
• Storage: Cool, dry place
• Application Temperature: + 5 °C to + 35 °C
• Usual No Coats: 1-2. Do not apply greater than 2mm per coat, use multiple coats for higher build.
• Drying Time: 2-4 hours
• Touch Dry: 1 hour
• Dry to Recoat: Dry to recoat 24 hours prior to Sealer application
• Curing Time: No water or condensation should contact the coating for 5 days from February 2025 Pg 3 of 5
• Installation. It is important to have adequate airfl ow between coats, especially in humid environments, including wet areas.
• Dry Film Build: 1mm
• Wet Film Build: 1-2mm
• Walkable Hardness: 24 hours
• Fire Group Classifi cation: 1-S (Test in accordance with ISO 5660:2002)

Building Code Compliance

If the project has a building consent then the following clauses apply.

B2 – Durability

This specification complies with the requirements as set out in B2 – Durability which must always be considered when demonstrating compliance with each of the clauses of the Building Code. It ensures that a building throughout its life will continue to satisfy the performance of the Building Code. It confirms the use of materials that will remain functional throughout the specified intended life of the building, but not less than 50, 15 or 5 years

This system meets the expected durability of the NZBC of at least 5 years

H1 – Energy Efficiency

This specification complies with the requirements as set out in H1 – Energy Efficiency which Provides for the efficient use of energy and sets physical conditions for energy performance

On Going Maintenance Instructions

Provide ongoing maintenance instructions required to meet the performance requirements of the NZBC.

Building Consent Authority Requirements

All the appropriate inspections are to be carried out by a BCA representative and that it complies with the NZBC requirements.

Documents

Abbreviations

The following abbreviations are used throughout this work section:

• BCA – Building Consent Authority
• LBP – Licensed Building Practitioner
• PPCS – Proprietary Plaster Clading System
• MPNZA – Master Painters of New Zealand Association
• MSDS – Material Safety Data Sheet
• NZBC – New Zealand Building Code

Manufacturers Documents

Copies of the above relevant company documents referred to in this specification are available at;

Resene Construction Systems
Web: reseneconstruction.co.nz
Telephone: 0800 50 70 40

No Substitutions

Substitutions are not permitted to any specified Resene Construction Systems system. Materials and execution to Resene Construction Systems specification except where varied by this specification and supported by architectural detailing.

Documentation

Finish Sample

Submit one 300 mm x 300 mm sample of the selected texture finish and colour for approval on request by the main contractor or specifier. Obtain signature of acceptance on sample and return to the Registered Plasterer.

Maintenance Instructions

Provide Resene Construction Systems Maintenance Guide on or before practical completion of the contract for issuing to the building owner. Resene Construction Systems Maintenance Guide to be provided on request.

Health and Safety

Refer to the requirements of the Health and Safety in Employment 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 Painters hazard handbook. Supply protective clothing and equipment. Inform employees and others on site of the hazards and put into place procedures for dealing with emergencies. Obtain from Resene Construction Systems the Material Safety Data Sheets for each product. Keep sheets on site and comply with the required safety procedures. Confirmation at the start of the project as to whether a Site Specific Safety Plan is to be produced by the Registered Plasterer prior to works starting.

Warranty

Warrant this system under normal environmental and use conditions against failure. Resene Construction Systems system warranty.

Materials: by Resene Construction Systems – 5 Years Materials only

Execution: by Registered Plasterer – 5 Years Workmanship only

Components Used

Resene Quick Dry

• Resene Quick Dry waterborne primer undercoat provides long-term flexibility over unstable substrates coupled with exceptional durability even when left uncoated for prolonged periods.
• Installed over the plastered joins prior to a full sealer coat/slurry coat

Acrylbond Resin – 20kg

• Multi-purpose Resin supplied in 20kg containers

MultiStop Bedding Compound

• Polymer-modified, cement based dry plaster mix. Supplied in 20kg bags.

Microstone

Rockcote MicroStone creates a natural stone finish that exudes elegance across a multitude of spaces. MicroStone can be applied over a range of substrates and surfaces for a bespoke seamless finish.

MicroStone is a two-part water-based product; Part A 10L and Part B 5L. Exemplifying excellence, this product exhibits minimal shrinkage and ensuring a flawless result every time. Discover the true essence of luxury with Rockcote MicroStone.

Resene Aqua Clear Natural (Flat)

Resene Aquaclear has been developed as a waterborne alternative to turps thinned oil modified urethanes.

 

Installation/Application

Check and Prepare Plasterboard Linings

Preparation based on new substrate installations.

Preliminary Checks

Plasterboard must be taped and stopped to a level 4 finish according to Plasterboard manufacturer’s specifications.

Clean Surface

When the substrate has been left for a period of time, dust and dirt may build up on the surface. This contamination must be removed prior to render application.

Masking

Before applying the render, masking must be applied to all joinery, pipes, roofs, and all areas likely to be marked by the render. Use drop cloths and ground covers to keep the working areas clean.

Resene Quick Dry (over plastered joins)

Application

Apply by brush, speed brush, synthetic fibre roller or spray. Spray application is generally not preferred for the first coat.

Apply one to two coats of Resene Quick Dry allowing two to four hours between coats. Lightly sand between coats. For porous surfaces, it may be desirable to thin the first coat with up to 10% clean water.

Resin/MultiStop Slurry Coat

Surface Preparation

Ensure surface is clean, sound, dry and free from dust, dirt, grease, mould and lichen.

Application

Mix a solution of Acrylbond and Rockcote MultiStop together and apply using a roller or brush. A high solids roller can also be used to ensure the solution is evenly distributed across the wall surface.

For pourous substrates (eg. brick, concrete) mix a 50:50 4L mix of Acrylbond/water and a 1 kg of MultiStop/AAC Adhesive/Hydroplast to the mix.

For other surfaces (including painted) ensure a 4 Litre of Acrylbond is mixed directly with 1 kg of MultiStop/AAC Adhesive/Hydroplast.

If you are unsure of the surface you are applying the slurry to, apply to a small section of wall and test for adhesion.

Rockcote MicroStone (2 Coats)

Mixing

• Mixing ratio by Volume: Part A 66% / Part B 33%. Kit weight ratio Part A 15kg / Part B 5.5kg.
• Before using stir Part A (10L wet component) to aerate content,
• Slowly add Part B (5L dry component) into Part A pail while mixing. Mix Part A thoroughly and combine Part B until homogenous.
• Mix to a smooth, lump-free consistency.
• To allow for proper hydration, let the product stand for 10 minutes, then re-mix for 1-2 minutes to a smooth paste consistency.
• To adjust consistency, ROCKCOTE MicroStone can be thinned up to 1.5% or 300ml / kit using clean water.
• Mixed Pot Life 90 minutes. Discard after this time.

Application

• Ensure the surface is properly prepared and ready to receive the MicroStone coating system.
• Any prior plaster coatings must be cured for a minimum of 48 hours or less than 15% WME before overcoating with a slurry mix
• The slurry mix must be allowed to dry for 4 hours before applying ROCKCOTE MicroStone.
• Apply the first coat in a tight and thin manner. When touch dry the application of the second coat can be commenced.
• Once the second coat is touch dry, go over it with a steel trowel to tighten and compress the coating. This will help to smooth any inconsistencies.
• When working in small areas, increased airflow is recommended to assist drying.
• Drying times will be affected by cooler air and substrate temperatures.

Sanding

• Sanding will be required to remove any minor imperfections in the MicroStone finish. The degree of sanding and the grit coarseness will depend on the MicroStone finish chosen.
• A random orbital sander fitted with a dust extractor or vacuum pump is highly recommended for sanding ROCKCOTE MicroStone finishes.
• Sanding screens are recommended as they will give a better finish, and will not clog during use like sandpaper and will reduce the risk of scratching the finish.
• ROCKCOTE MicroStone can be sanded once the MicroStone finish has dried completely.
• The recommended coarseness of the sanding screens and sandpapers are: Smooth Finish – 240 grit, Textured Finish – 180 grit and Exposed Stone Finish – 120 grit.
• Light hand sanding is recommended for small and detailed areas only.

Resene Aquaclear (2 Coats)

Resene Aquaclear has been developed as a waterborne alternative to turps-thinned oil-modified urethanes. It will provide a harder-wearing finish to the interior plaster range of products.

Application typically over interior finishes

Diluted 50% with clean water. 

2 coat application with #4 synthetic roller

Important:

This specification must be read in conjunction with the Resene Construction Systems technical drawings.
No alteration to the Resene Construction Systems RenderSpec® is permitted.
All Technical Data Sheets are available at https://reseneconstruction.co.nz/technical-library/technical-data-sheets/
All Safety Data Sheets are available at https://reseneconstruction.co.nz/technical-library/safety-data-sheets/