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Castagra Ecodur Concrete Flooring and Roofing Tips

I’ve got a couple suggestions based on experiences in concrete flooring and roofing applications such as those we have been doing recently stateside.

Concrete Flooring: We find that in some cases where the concrete is more porous or has excess moisture when coated on a hot day while the surface is heating, such bubbles can form. A few tips in case it is an issue are:

1. Try to coat while the concrete is cooling rather than heating,
2. Use a thin concrete sealer (the stuff is cheap, thin and a little goes a long way),
3. Use an initial thin coat followed by additional coat rather than doing one thick coat.

Roofing: Clean, dry and tight substrate is important. The coating can only be as good as the substrate will allow it to be. We also recommend putting a sunscreen on top. There are various ones around that are not expensive because a little goes a long way, carry long warranties, come in various colours (white, grey, silver or whatever color) of either the silicone or acrylic product type that will eliminate the fading/yellowing and also contribute warranty. The two layer system has the huge advantage that the Ecodur holds everything together to make a great substrate for putting a thin coat of the sunscreen on top. Those sealers don’t cure/dry well on cold or wet days though. The Ecodur has the advantage that it can go on any time of year temperature-wise (add enough hot sauce on cold days to kick it over quickly enough).

For foaming, you don’t need to empty your liquor cabinet if you use powdered corn starch instead of alcohol as the blowing agent. The corn starch makes the foam more rigid than the alcohol does since the starch is a molecular cross-linker. Maximum of about 10% by weight or a 50 pound bag per drum for a fairly good foam rise. Can be topped up and tweaked using extra booze too. More corn starch than 10Wt% makes the drum too thick and difficult to pump.