epsilonGreedy Posted March 30, 2021 Share Posted March 30, 2021 On another thread someone mentioned purchasing 150mm "high quality tongue and groove" PIR. I have not seen discussion of this type of PIR floor insulation sheet before and I am just wondering what benefit this provides? Link to comment Share on other sites More sharing options...
Dudda Posted March 30, 2021 Share Posted March 30, 2021 The cavity wall PIR insulation is often T&G. The floor usually isn't. In a cavity wall the T&G help to hold the insulation together and keep the cavity part clear. This isn't an issue in a floor. 1 Link to comment Share on other sites More sharing options...
Johnny Jekyll Posted April 2, 2021 Share Posted April 2, 2021 On 30/03/2021 at 11:10, epsilonGreedy said: On another thread someone mentioned purchasing 150mm "high quality tongue and groove" PIR. I have not seen discussion of this type of PIR floor insulation sheet before and I am just wondering what benefit this provides? I'm using Cavity Therm full fill (including pre-formed corners) in the walls and currently Xtratherm T&G in the floor. So it's all tongue and groove. They say it's a continuous system that delivers a superior thermal bridging detail. And no need for taping. I have it on site and to be fair it really does fit together very snug. Link to comment Share on other sites More sharing options...
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