What do people / regs consider to be the minimum stud wall thickness were there is going to be 45mm drainage and 15 & 22mm water pipes concealed within ?
Just trying to work out the minimum I can rob off one room to allow the full width to be used in another IYSWIM...
Thanks in advance.
47mm for the wood and 25mm for 2 x 12.5mm taped and filled plasterboard, giving 72mm. You may be able to use 9.5mm plasterboard (giving 66mm) if fire resistance is unimportant.
Christian.
I don't think that 47mm is enough. The fittings on 45mm drainage pipe will be bigger than 47mm and won't fit inside the wall. If the pipes need to go through any frame members, 47mm is *definitely* not enough. I would use
3"x2" unplaned wood - using the 3" dimension across the cavity between the two sheets of plasterboard.Have something to add? Share your thoughts — no account required.
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