CONCRETE
All concrete sub floors must conform to the AS 1884-1985 and shall be tested for moisture content and relative humidity prior the installation of the Altro safety flooring. Test the sub floor using a hydrometer and/or satisfactory alternative, until the test shows the relative humidity does not exceed 70% and the moisture content not to exceed 5.5% as per the Australian Standards.
Ensure the materials in place are firmly fixed, are sound and will not breakup and are not drummy. Remove any unsound surfaces and make good with cementitious underlay. DO NOT USE ANY GYPSUM BASED LEVELING COMPOUNDS (IE: Agnews water putty or cornice cement).
Ensure all surfaces are sound, smooth, dry, free of all dust and deleterious or loose materials, grease, paint, polish or the like.
The final underlay and surface shall be true in flatness and falls parallel to that required of the finished vinyl surface.
Where the substrate is laid on ground or fill ensure there is an efficient waterproof membrane under.
Where as the concrete sub floor exceeds the Australian Standard for Dryness and R.H. the sub floor shall have an approved moisture barrier applied strictly following manufacturers recommendations.
TIMBER
NEW CONSTRUCTION:
Timber subfloors shall comply with the relevant requirements for flooring given in AS 1684, section 3
EXISITING FLOORS:
Where existing timber, plywood or particleboard floors are to be used as a subfloor for the installation, worn, rough, cupped or warped surfaces shall be sanded or filled, but must retain structural adequacy.
UNDERLAYMENTS:
We recommend the use of an underlayment when installing over timber subfloors, and shall be installed strictly in accordance with the relevant manufactures recommendations. Note: If an underlay is not used, subfloor joints may show through.
