Dear group,

It is my intention to replace my upstairs floors with chipboard, enabling me
to re-use the boards downstairs for a sanded floor. As I will be improving
the ventilation under the ground floor, I hope to staple netting between the
joists and insulate with 50mm of mineral wool.

I Googled for info on sealing draughts in non-tongue_and_groove and mostly
found the usual papier mache and solid wood fillets solutions.

I'm wondering if breathable roofing membrane directly under the boards might
be a better solution
(or maybe used in place of netting to suspend the mineral wool ?)

Jeremy