Cellotex were coy about their test too.
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Yes - but the BS test is published - and believeable.
Dr Evil merely asked if it had been independently tested. Still no opinion from IMM though.
The Celotext description of the NPL test showed that it actually did work (for some value of work).
I think he would say give it a wide berth.
Price/performance. If it does what you want going by these Cellotex test, then if the price is right, then it is fine. Currently it is "very" expensive for what it is.
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I'd guess it's as good as 200mm rockwool when used under the floor, but only as good as 90mm rockwool when used in walls and as good as
60mm rockwool when used in ceilings.OTOH for preventing solar gain in ceilings it would be as good as
200mm rockwool. All these would require ~25mm airgap either side.Probably comes into it's own for insulating uneven or odd shaped gaps and cavities, especially where a vapour barrier is also required or a gap for ventilation.
cheers, Pete.
But my house is not in a vacum ...........
That's where I used it (see previous post). It isn't except possibly for reflecting heat from the underfloor heating upwards. When that's off it does nothing.
Then hopefully it is insulated with Kingspan or Celotex :-)
>In article , Mike writes
A builder has just installed this stuff in the roofs of two new houses next to me, interesting looking material, the builder hasn't spared any expense on the rest of the build and had plenty of celotex on site which he used for the floors. He's convinced that the quilt is the dogs gonads as far as over the rafters type of insulation goes.
All the above equivs. Is that just a guess by you?
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Bertie, has he any figures to prove the performance? Or does he just wave his arms when explaining things?
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Well he would wouldn't he. It's much easier for him to lay. But he isn't paying for it's installation or for any future heating bills. It's a no brainer for the builder.... :-)
Roy
Builders tend not to have much brains anyway.
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