Calculating benefit of insulation

Calculating benefit of insulation

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AnotherUsername

Original Poster:

113 posts

28 months

Wednesday 3rd March
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Little Lofty said:
I used Tri Iso multi foil on a few lofts around 12 years ago. One in particular was for a mate, he still raves about how warm the loft rooms are and that he virtually never heats them. I also remember revisiting one of the lofts on a very hot summers day (rare up here smile ) and was surprised at how cool the room was, my loft at home had been very warm. I stopped using it when building control lost confidence in it. It didn’t save a lot of money but did save time, it also didn’t really improve on headroom as the rafters always had to be beefed up anyway. It was much easier to handle and store though.
I bet you taped the joints!

Little Lofty

2,778 posts

115 months

Wednesday 3rd March
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AnotherUsername said:
I bet you taped the joints!
Yes definitely, it forms the vapour barrier so is a must tbh.

dickymint

19,305 posts

222 months

Wednesday 3rd March
quotequote all
Little Lofty said:
I used Tri Iso multi foil on a few lofts around 12 years ago. One in particular was for a mate, he still raves about how warm the loft rooms are and that he virtually never heats them. I also remember revisiting one of the lofts on a very hot summers day (rare up here smile ) and was surprised at how cool the room was, my loft at home had been very warm. I stopped using it when building control lost confidence in it. It didn’t save a lot of money but did save time, it also didn’t really improve on headroom as the rafters always had to be beefed up anyway. It was much easier to handle and store though.
Did you find it a pain in the arse fixing plasterboard on top with dry wall screws? Now and then the "fleece" would wrap around the screw?

Little Lofty

2,778 posts

115 months

Wednesday 3rd March
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dickymint said:
Did you find it a pain in the arse fixing plasterboard on top with dry wall screws? Now and then the "fleece" would wrap around the screw?
I know what you mean and did experience that occasionally, but we always fitted a 2x1 underneath as it needed an air gap on both sides, the plasterboard fixed into the 2x1. The pain was keeping the quilt in place until the 2x1 went on, I found a hammer tacker worked the best.

Pistonsquirter

100 posts

3 months

Wednesday 3rd March
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Where is the wind in the cavity coming from?