"tongue and groove" PIR.

[epsilonGreedy]

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?

[Dudda]

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.

[Johnny Jekyll]

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.