Good preparation is significant for a trouble-free installation. Most vinyls can be laid on concrete, timber, stone and many other sub-floors, which have been suitably prepared. Site conditions must comply with the relevant national regulations.
Vinyl is not suitable for external premise or unheated locations but it can be used with under-floor heating providing it is switched off for 48 hours before and after laying (the maximum permitted covering climatic characteristic is 27°C (81°F).
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Tiles, adhesive and sub-floor must be allowed to stabilise to a consistent climatic characteristic in the middle of 18° - 27°C (64° - 81°F) for a period of 24 hours before and after installation.
Careful sub-floor preparation is vital for an exquisite floor appearance and good tile adhesion. The sub-floor must be hard, smooth, clean, dry, free from defects and fit for purpose. A suitable levelling blend should be used to ensure that no irregularities show straight through to the covering of the finished floor.
In all cases, the sub-floor must be sufficiently dry and the relative humidity checked to ensure it is not greater than 75% by using a suitable moisture test method.
Direct-to-earth concrete and stone sub-floors must havean sufficient damp proof membrane. Follow manufacturer's detailed instructions for the premise of a covering Dpm and the use of levelling compound.
2.1 New Concrete
Must be allowed enough time to dry thoroughly as it will consist of a high percentage of residual moisture. Apply levelling compound.
2.2 Old Concrete
Must be cleaned of all paint, grease, wax and any other foreign matter. Apply levelling compound.
2.3 Old Resilient Floors
Existing tiles should be lifted and adhesive residues removed by scraping. No solvents should be used to take off old adhesive. Apply levelling compound.
N.B. As a protection precaution when lifting vinyl asbestostiles the proper protection measures should be adhered to.
2.4 Terrazzo/Stone
Repair worn or damaged areas. Degrease and apply levelling compound.
2.5 Timber
Must be overlaid with minimum 6mm (¼") covering or flooring grade plywood, which must be suitably secured. A suitable feathering blend should be used to flat out joints.
Only the recommended adhesives should be used - others will not give enough performance and may fail.
3.1 Recommended Adhesives
3.1.1 Sf Adhesive
Sf Adhesive is a water-based acrylic adhesive recommended for all areas except those branch to heat or moisture.
3.1.2 Universal 2-Part Adhesive
Recommended for all areas branch to some heat and moisture variations as may be found adjacent to sunny windows and shower rooms. Universal is entirely solvent-free and classified as Ec1 with respect to very low Voc emissions.
3.2 Usage of adhesives
Follow the instructions on the packaging. Spread adhesive evenly using a trowel with notch size 1.5 x 5mm (Uk), a Euro A2 (1.8 x 1.2 x 1.65 mm) or V notch
1/16th" x 1/16th" x 1/16th" (Usa). Do not use worn trowels. Only spread enough adhesive that can be covered within 60 minutes.
Tiles should be rolled with a 45kg (100lbs) roller as soon as possible after laying and before the adhesive sets - timing will depend on site conditions but is commonly 1-2 hours after spreading the adhesive.
Always clean away excess adhesive before it is allowed to dry - use a soft cloth moistened with Adhesive Remover. Dried adhesive can be removed by carefully scraping it off the tile, or by using a 3M blue pad moistened with Adhesive Remover.
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