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What cavity insulation for my extension?

I have personally witnessed cavity batts permanently submerged in water for 3 months with no wicking.

In fact, they recommend that you can actually install their product below the dpc within the drip trough.
 
noseall said:
freddymercurystwin said:
. There really isn't that much to choose between the two methods these days. I just prefer a cavity. :P
Click to expand...



The idea of building the blockwork first does not sit at all well with me and many brickies feel the same.
Click to expand...
I would definitely agree with that point. Before insulation was put in to half filled cavities the face brickwork was always erected first.
 

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