Hi, I am installing a new plasterboard ceiling with a 5kg/m2 soundproof membrane. I would like to install a first layer of intermediate lightweight ceiling under the joists. I just want to create a surface on which I can I can properly glue the soundproof membrane (then will install the proper plasterboard with resilient bars).
I am between 6mm fibreboard (the one used for laminate underlay)
http://www.flooringsupplies.co.uk/a...pla&keyword=&gclid=CI_2_ZHFuLcCFa7JtAodOggAnw
or, 3mm hardboard.
http://www.diy.com/nav/build/timber...oard/Hardboard-L-1220-x-W-610-x-T-3mm-9276444
Which will be better for the job?
PS: I also thought to install 9.5 mm plasterboard but then I add too much of additional weight to the ceiling…
I am between 6mm fibreboard (the one used for laminate underlay)
http://www.flooringsupplies.co.uk/a...pla&keyword=&gclid=CI_2_ZHFuLcCFa7JtAodOggAnw
or, 3mm hardboard.
http://www.diy.com/nav/build/timber...oard/Hardboard-L-1220-x-W-610-x-T-3mm-9276444
Which will be better for the job?
PS: I also thought to install 9.5 mm plasterboard but then I add too much of additional weight to the ceiling…
