Loft insulation - 125mm Joists

revevs · 11 Sep 2022

I’m looking to add insulation to my loft. The joists are 125mm

Is there a problem with putting 100mm between the joists, and then 170mm on top?

Will the 25mm gap be an issue? I assume the top roll will probably settle and fill the gap?

Mr Chibs · 11 Sep 2022

It's not a problem, lay the next layer 90º to the first layer. Ideally you should be trying to get 300mm depth up there.

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Loft insulation - 125mm Joists

revevs

Mr Chibs

DIYnot Local

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