dj-paul-c
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i had ment to put it was like an expanding foam so i could go under the floor and spray the underneath of the boards,
the rockwool slabs id think im my mind would be better than the kingspan/celotex ?
bottom line tho,the cost of the material would be a fair bit, + time to do it,theres 40+ square meters under the floors, would it be worth it,how much would it help any draughts/cold in the winter ?
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