Hello. I have just moved into a 1930's semi which is absolutely freezing, so I'm obviously trying to improve the insulation. Yesterday I had blown in cavity wall insulation. The company website says they use supafil. I looked on the supafil website and it all checked out. After the installers left there was some of the insulation blowing about, so I picked it up and put a few drops of water on it. It immediately became soaked; and rubbing it through my fingers, turned into a grey mulch then dissolved into nothing. If you care to go to the supafil website it mentions the specs, including the mention of a water repellent. My basic question to forum members is how can this delicate white fluffy stuff work as it is supposed to. It does not appear to be in any way water repellent; in fact less so than cotton wool. I am worried now, I've had this stuff pumped into my walls, and the slightest bit of moisture is going to turn it to mulch? Any feedback most welcome.
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