Good afternoon,
Quick question.
My roof construction of new extension is Joists > Deck > 100mm foil taped insulation board > deck > epdm.
Do I need to fit a membrane between bottom of joists and plasterboard?
Thank you
Quick question.
My roof construction of new extension is Joists > Deck > 100mm foil taped insulation board > deck > epdm.
Do I need to fit a membrane between bottom of joists and plasterboard?
Thank you