Has anyone used Qmulus insulation before? Wondering how it would compare to Pink Batts in terms of performance, and longevity. We're looking at re-insulating our house (standard 3-bedroom), as one of the rooms and the bathroom/laundry has no insulation, and the rest of the house has large gaps, and a thin layer of Batts. Pricing between the two is fairly comparable, and offers the same R rating.
I had regular wool blown into my uninsulated house. It was a huge improvement, but after a few years it compacted down - even though they said it wouldn't. I laid batts over the top and got another big improvement.
The advantage of the wool is it made it everywhere, and my house has a weird lowered ceiling that made access difficult.
I would personally go for rolls of pink batts or other insulation if access is easy. Rolls minimise joins. If you want great insulation do both - the mineral wool now, then pink batts in a few years over top.
If you have downlights either have them replaced with regular lights or with LED downlights that have insulation cover rating. Downlights are the worst things every for insulation. Even if it says sealed, awful.
If using sheep wool, get a product that has polyester built in, as the wool then shouldn't slump (as much). Glass wool insulation has changed since the old days, so is supposedly now safer to install than the original stuff, and I think many of the brands are similar. The other big brand is Bradford gold, which I am installing in our ceiling, and it is bio-soluable http://www.bradfordinsulation.co.nz/healthy-homes/ . I believe glass wool is one of the only type of insulation you can insulate over IR rated downlighters. I don't believe you can with sheep wool or polyester. Would pay to get some professional advice .
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