Fixing plasterboard with bonded insulation

[Stan44]

Hello all,

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 skim and brush on Artex to create a rough, rustic look. Question is can I safely dot and dab to fix the boards?

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.

 

[northernwarrior]

yes you can dot your boards on as normal, but you will have to add some secondary mechanical fixing (approx three mushroom type hammer fixings per board) and there is no problem fixing them to the ceiling with screws, and you can get them up to a 105mm long for board fixing

 

[Stan44]

Thank you very much indeed NorthernWarrior. Much appreciated.