I am decorating parts of the attic and will soon insulate the support beams and slanted ceiling. There are 850-950 mm centers between the support beams (old house). I want screw-resistant walls, so something behind the drywall is needed, but what? OSB probably won't work with such long distances. Should extra studs be installed between, or should tongue and groove boards be run all the way? Some tongue and groove/sparse as support for OSB? How is it usually done?
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I had the same problem, slightly different measurements between the trusses. Screwed 45x45 across at cc60 and mounted OSB/gypsum horizontally.
Takes up a bit more space, but you get installation space and 45 extra insulation.
Edit: Today's boards are probably 900 mm wide, so then you set cc450 (I used 1200 mm boards)
Takes up a bit more space, but you get installation space and 45 extra insulation.
Edit: Today's boards are probably 900 mm wide, so then you set cc450 (I used 1200 mm boards)
Of course, you do it that way, I've even done so with regular walls when insulating.Isakare said:
Both 1200 and 900 are available now, but the insulation is most common for cc60 so I'll go with that.