Surface PreparationWatco Safety Coat may be applied to concrete and wooden surfaces. New concrete should be at least four weeks old. Surfaces should be clean and dry. Very smooth or new concrete should be prepared using
Watco Cemtetch acid based cleaner. Cemtetch removes loose cement deposits (laitance), and light dirt and provides a key.
Grease and oil should be removed using
Watco Bio D or similar degreasant. Watco Safety Coat can be applied over existing coatings but they must be well bonded. Glossy paint should be abraded to provide a key. Existing painted surfaces can be degreased using Watco Bio D. Wooden surfaces should be abraded to remove dirt. Two or three coats may be required on open textured surfaces such as chipboard. Not recommended for use onto metal or latex levelling compounds.
Mixing
Remove the two tins from the tall outer tin. Decant all the contents of the two tins into the outer tin (scrape around the inside of the tins to remove any residue). Mix the components together very thoroughly using a spatula or similar wide bladed tool (a piece of wooden batten is ideal). Continue mixing until an even colour and consistency are obtained. Do not mix more than one unit at a time. If a paint stirrer fitted to an electric drill is used, also use the spatula to blend in any unmixed material from the sides and bottom of the tin.
Application
One coat of Watco Safety Coat on most surfaces will act as a priming/sealing coat. The second coat should be applied as soon as the first coat is dry (approximately 16 hours at 20°C). Best results are obtained in warm, dry conditions with a good through draught. Apply Watco Safety Coat by simulated sheepskin roller. Do not exceed the maximum coverage of 30m² per 5 litres per coat. The temperature at floor level during application and cure must be at least 15°C, preferably higher. Occasionally stirring the product will ensure a more even distribution of the aggregate.