Fibreclad
FOR PLASTERING ON: 7.5 mm FIBRE CEMENT BOARD
FIBRECLAD is a double meshed Jointing and Coating System designed specifically for use on fibrecement board cladding installed over an approved drainage and ventilation cavity.
Installation of the board and cavity must be carried out in strict accordance with the technical specifications of the board Manufacturer, and is not within the scope of the FIBRECLAD specifications.
BUILDING REGULATIONS
When installed and maintained in accordance with the instructions given in the Mineral Plaster Technologies Ltd ( MPT ) Technical Manual, FIBRECLAD will meet the provisions of the New Zealand Building Code as required by: Clause B1 Structure: B2 Durability: E2 External Moisture and F2 Hazardous Building Products.
JOINTING MESH
The FIBRECLAD jointing system consists of two independently installed layers of hard woven, 4 x 4 mm, alkali resistant fibreglass mesh.
Mesh widths are 75 mm for the initial layer, and 400 mm for the second, providing a double meshed joint-reinforcement.
SEALER COAT
Sheets and sheet joints are to be sealed with a silicone-based sealer prior to application of the jointing system, to protect the sheet edges and to prevent rapid moisture loss from the jointing plaster during application.
Sheets must be dry before application of the sealer coat.
MOISTURE CONTENT
Moisture content in the framing timber must be monitored by the MPT Approved Applicator before installation of the FIBRECLAD jointing system. This is achieved with the use of an invasive type moisture meter.
Where content exceeds acceptable levels, the owner or builder must allow the necessary drying time or provide other drying assistance.
SEALANTS
Only BRANZ Appraised sealants are to be used where sealant is required.
JOINERY AIRSEALS & FLASHINGS
Airseals are to be installed into all joinery openings to minimize the risk of airflows carrying water into the opening cavity.
MPT manufacture and supply proprietary sill and jamb flashings for both recessed and flush-mounted joinery.
PLASTERS & FINISH COATS
BONDCOAT ( jointing plaster ):
- Is a factory mixed adhesive render for bonding jointing mesh over fibrecement sheet joints, and is the bedding compound used to install both layers of jointing mesh.
- Is a cement based non-acrylic plaster with high water vapour permeability.
SKIMCOAT:
- Following the application of the jointing system, a flushing and leveling coat of SKIMCOAT is applied over the entire sheet surface, including the joints.
- Is an all-purpose skim coat render, and can be laid up as a preparation coat to ensure a high standard of finish for subsequent finishing coats.
FINISH COATS:
- All MPT plaster finishes are available standard for painting. To compliment the breathing activity of its plaster coats, MPT recommends the use of vapour permeable 100% acrylic-based exterior house paints which are used over FIBRECLAD plaster to give the desired finish colour to the exterior walls and to make the system weathertight. Minimum light reflectance is 40 %.
ADOBECOAT
- ADOBECOAT is a fine sponge finish and is ideally suited where an adobe or undulating finish is required. It can be easily worked to any desired effect, from bold rustic and undulating textures, to smooth sponge finishes.
FLOATCOAT
- Floatcoat has been specifically formulated for finishing by plastic trowel, or sponging with water.
- It can also be sprayed through a hopper gun to achieve a fine to medium textured finish.
SPONGECOAT
SPONGECOAT is a medium sponge finish which will maintain texture beneath several layers of paint.
SCRATCHCOAT MEDIUM
- SCRATCHCOAT MEDIUM is a medium texture coat (drag or random scratch), and during setting the applied areas are worked with a polystyrene or hard plastic float.
SCRATCHCOAT COARSE
- SCRATCHCOAT COARSE is a coarse texture coat (drag or random scratch) and during setting the applied areas are worked with a polystyrene or hard plastic float.
SPRAY TEXTURES
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