Have a large open plan barn conversion in France nearing completion and thinking about wall and ceiling surfaces. The main room is 130 sq. m with a 6m high ridge.
The walls are new, block cavity: bone dry. In order to 'break up' the huge walls, they have been 'framed' with 4" x 4" rustic oak to create a sort of Tudor framed look. Our intention is to fix plasterboard with 70mm bonded insulation inside the frames and then brush on Artex to create a rough, rustic look? Is there a better option?
With regard to the ceiling, we intend to put fibreglass insulation between the rafters (4 x 2) so 4" thick and then fix the same plasterboard (with 70mm thick bonded insulation) to the rafters. My concern is he length of screws that will be needed - at least 100 mm - is this OK? There is a top quality, permeable membrane beneath the tiles by the way.
Any advice or comments would be much appreciated.