cavity insulation

byron · 5 Dec 2005

I intend to brick up a doorway which will have a cavity of 75 mm.Can I use polystyrene to insulate the cavity and what thickness should I use .
regards

Mr Winston · 5 Dec 2005

no dont use polystyrene for a full fill cavity - it will transmit moisture across the cavity and give you a damp problem

you can use mineral wool/fibreglass batts the same thickness as your cavity (rockwool. isowool, knauf etc)

byron · 5 Dec 2005

cheers Mr Winston

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cavity insulation

byron

Mr Winston

byron

DIYnot Local

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