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Rockcote Otsumigaki Japanese Clay/Lime Finishes - Concrete Block

General

Description of Works/Specification Notes

ROCKCOTE Otsumigaki is a pr. e-mixed clay and lime plaster that can be coloured with oxides and provides a lustrous hard finish. Otsumigaki is manufactured from pure minerals and natural binders.
ROCKCOTE Otsumigaki is composed of hydrated lime, natural aggregates and additives.
ROCKCOTE Otsumigaki can be tinted with alkali resistant mineral pigments to achieve a range of natural colours and attractive patina effects.
When applied by a skilled ‘Resene Construction Systems Artisan’ ROCKCOTE Otsumigaki can be worked to a smooth polished look, but many different styles of finish can be achieved by using different trowels, floats, sponges and finishing techniques.

Properties

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

F2 - Hazardous building materials

This specification complies with the requirements as set out in F2 - Hazardous building materials which safeguards people from illness and injury from quantities of gas, liquid, radiation and solid particles caused by exposure to building materials

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:

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 - 15 Years Materials only
Execution: by Registered Plasterer - 5 Years Workmanship only

Components Used

Resene Construction Systems Blue Mesh (1200mm wide)

Plaster Systems Coarse Mesh - Base Coat

Rockcote MultiStop Bedding

Rockcote RenderPrime

Rockcote Otsumigaki

ROCKCOTE Otsumigaki is an extremely versatile product that allows the skilled artisan to achieve a wide range of stunning decorative effects for interiors.

A polished earthen lime finish, ROCKCOTE Otsumigaki can be used in interior high traffic areas in residential settings such as entrances, stairwells and halls.

Meaning “polished and compressed “in Japanese, Otsumigaki draws inspiration from the lime and clay interior finishes used in traditional Japanese homes. The product is applied with a trowel in two tight coats and then polished with a Japanese Trowel andCarnauba Wax.  

The polishing process compresses the lime and clay creating a soft, smooth, even feel across the surface and a pearly lustre finish.

The beauty of ROCKCOTE Otsumigaki lies in its ability to create textural depth in a smooth, flat surface. Create a dreamy feature wall in its natural colour mixed with oxides and lightly polished to give warmth, depth and lustre. ROCKCOTE Otsumigaki has a subtle elegance that gives walls life yet allows the surrounding elements in the space to speak for themselves.

ROCKCOTE Otsumigaki can be tinted to a wide variety of colours, however it is neither possible nor desirable to achieve an exact colour match due to the uniqueness and variations in a natural mineral product.

ROCKCOTE Otsumigaki can be used over traditional natural plasters such as ROCKCOTE Earthen Renders, as well as all common building substrates when prepared with a coat of ROCKCOTE EcoStyle Sealer/Undercoat with grit. It is not suitable for exteriors or wet areas.

USES: 

Rockcote Otsumigaki

ROCKCOTE Otsumigaki is an extremely versatile product that allows the skilled artisan to achieve a wide range of stunning decorative effects for interiors.

A polished earthen lime finish, ROCKCOTE Otsumigaki can be used in interior high traffic areas in residential settings such as entrances, stairwells and halls.

Meaning “polished and compressed “in Japanese, Otsumigaki draws inspiration from the lime and clay interior finishes used in traditional Japanese homes. The product is applied with a trowel in two tight coats and then polished with a Japanese Trowel andCarnauba Wax.  

The polishing process compresses the lime and clay creating a soft, smooth, even feel across the surface and a pearly lustre finish.

The beauty of ROCKCOTE Otsumigaki lies in its ability to create textural depth in a smooth, flat surface. Create a dreamy feature wall in its natural colour mixed with oxides and lightly polished to give warmth, depth and lustre. ROCKCOTE Otsumigaki has a subtle elegance that gives walls life yet allows the surrounding elements in the space to speak for themselves.

ROCKCOTE Otsumigaki can be tinted to a wide variety of colours, however it is neither possible nor desirable to achieve an exact colour match due to the uniqueness and variations in a natural mineral product.

ROCKCOTE Otsumigaki can be used over traditional natural plasters such as ROCKCOTE Earthen Renders, as well as all common building substrates when prepared with a coat of ROCKCOTE EcoStyle Sealer/Undercoat with grit. It is not suitable for exteriors or wet areas.

USES: 

Carnauba Wax (Liquid)

ROCKCOTE Liquid Carnauba Wax is a water based emulsion of carnauba wax that can be used over ROCKCOTE Venetian Plaster or ROCKCOTE Otsumigaki for a hard, durable, clear finish and a beautiful hard polish feel.

The 20L drum comes with a tap for easy decanting. It is already fully diluted and ready to use. It therefore does not require the addition of any water before use.

Application and Coverage

Installation/Application

Resene Construction Systems Mesh (Standard Weave)

General

Measured and cut slightly longer than the height/length of the area to be covered.

Application of Fibreglass Mesh

Apply the pre-measured mesh from the top of the wall.

Press the fibreglass mesh into the render mix with a steel trowel starting at the centre and working outwards towards the sides, so that it is completely embedded with the render mix forced right through the mesh holes.

Ensure there are no wrinkles or trapped bubbles in the mesh and that it is fully embedded just below the surface of the render.

Do not embed the leading edge of mesh as this locates your next mesh layer.

Mesh must not be exposed but retained as close to the surface as possible.

Overlap mesh 100 mm with the adjacent drop of mesh, and trowel to embed together.

Ensure the fibreglass mesh covers all exposed areas of the substrate, including any recesses around the exterior joinery and internal corners.

Fibreglass Mesh must be bought to the outside edge of all Flashings.

Apply 450 x 150 mm strips of fibreglass mesh `butterflies’ diagonally at every corner of openings for window and door joinery, meter boxes etc.

After the render mix has cured, trim off excess length accurately against the flashing edge.

Plaster Systems Coarse Mesh Render - Base Coat

Surface Preparation

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

Application

Plaster can be applied with a steel trowel, pump or broad-knife at approximately 3-5mm thick (3m2 per bag). Apply plaster only when the temperature is between 5°C and 30°C and will be in that range for the 24 hours period following application.

Curing:

Render should be protected from hot drying winds and direct sunlight for the first 16 hours. Protect newly applied plaster from rain and water run off for the first 24 hours.

Rockcote MultiStop Bedding Skim Coat

Surface Preparation

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

Mixing

Rockcote MultiStop is added to clean potable water whilst being stirred with a powered mechanical mixer until a trowel-able consistency is achieved. The mix is left to stand for 2 minutes and re-mixed, this will ensure all dry powder components are fully saturated and ready for application. Only mix as much product as can be reasonably used within 30mins. Once the product has started to set it must not be re-tempered. Dispose of setting material. Always wear a dust mask when mixing and handling this product.

Application

Plaster is applied not greater than 1mm with a steel trowel to a flat finish. A range of finishes can be achieved using sponges or steel trowels. Apply plaster only when the temperature is between 5°C and 30°C and will be in that range for the 24 hours period following application. MultiStop can be sanded to remove any dags or minor imperfections from the trowelling.

Curing:

Render should be protected from hot drying winds and direct sunlight for the first 16 hours. Protect newly applied plaster from rain and water run off for the first 24 hours.

Rockcote RenderPrime

Application

Apply to trowelled plasters once dry (Dependent on surface porosity, typically 4-6m2 per litre). Apply one coat of Resene Renderprime over the plaster substrate by commercial grade knapsack sprayer, spray, long pile roller or brush and allow to dry. Evenly coat all surfaces to ensure uniform curing.

Rockcote Otsumigaki First Coat

Rockcote Otsumigaki Finish Coat

Carnauba Wax (Liquid)

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.
The following Resene Construction Systems TradeSpec® Documents can be found at http://tradespec.co.nz
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/