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Co1



Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3616
United Kingdom 2013 Defender 90 Puma 2.2 HT Loire Blue
What depth of foam to insulate roof?
I’m replacing the headlining on my 90 so will take the opportunity to insulate the roof. I have sole coat on it, but what depth of foam should I be using over the top? Is 10mm too thick?

Thanks
Col
Post #846660 28th Jul 2020 2:13pm
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Harry.O



Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 705
United Kingdom 1989 Defender 90 300 Tdi ST Nato Green
2 layers of foiled-lined camping mat went inside my roof without any issues so circa 10mm. From memory there was more space available but the local Tescos had no more camping mats in stock at the time and I was in a hurry.

https://www.tesco.com/groceries/en-GB/prod...%26w%3D540 2005 Td5 110 Hardtop
1989 300Tdi 90 Soft top
1992 200Tdi 90 Truck cab with Land Cruiser axles
Post #846667 28th Jul 2020 3:00pm
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ChrisDefender



Member Since: 29 Oct 2015
Location: Midlands
Posts: 445
United Kingdom 
Pretty sure I used 12mm acoustic foam with a self ashesive backing with no problems. It's all stil up there anyway Thumbs Up
Post #846696 28th Jul 2020 5:19pm
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Co1



Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3616
United Kingdom 2013 Defender 90 Puma 2.2 HT Loire Blue
Nice one, thanks.
Post #846723 28th Jul 2020 6:48pm
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BuckBlu110



Member Since: 19 Apr 2014
Location: in the pub
Posts: 709
United Kingdom 1994 Defender 110 BMW M57 3.0 Diesel CSW Buckingham Blue
I used 12mm closed cell foam and 3mm silent coat and it was tight! If I was doing it again with silentcoat/ dynamat or the like, then I would probably go for 10mm instead.
Post #846744 28th Jul 2020 7:57pm
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ChrisDefender



Member Since: 29 Oct 2015
Location: Midlands
Posts: 445
United Kingdom 
I used the black version of the silent coat too. To be safe it looks like the 10mm is a better bet so not to put any undue pressure on the headliner.
Post #846816 29th Jul 2020 9:15am
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