Is it possible to board a loft that has 400mm of insulation? The joists are 120mm high.
LoftZone would raise the boards to 404mm, leaving only a 4mm air gap instead of 50mm.
Loft Leg XL would raise it to 425mm, leaving only a 25mm air gap.
Could I put a block of wood between the joists and...
I know this is an old thread, but I'm having the same problem, and would love to know whether you fixed it. In my case everything worked for a while, until it didn't.