The wood is 300x50 c24.
I measured and I would need 120mm PIR to loose the hip so i'm going to go with FMT's suggestion of a thinner board and plaster board over it with and gaps foamed and taped.
I've used 7x 45mtr rolls of 100m foil tape so far
I measured and I would need 120mm PIR to loose the hip so i'm going to go with FMT's suggestion of a thinner board and plaster board over it with and gaps foamed and taped.
I've used 7x 45mtr rolls of 100m foil tape so far