Vijay Posted August 10, 2017 Share Posted August 10, 2017 When installing your drainage pipework through the floors, what space have you left between the vertical pipes and the internal wall (that would be built afterwards)? I assume you'd want to leave some gap for fixings but have it as close to the wall as possible so you can box around it? Link to comment Share on other sites More sharing options...
Oz07 Posted August 10, 2017 Share Posted August 10, 2017 1" to 2" off studwork. 2" if blockwork and dot and dab. Could get technical and space off the amount of a bracket. If so just buy a few and measure Link to comment Share on other sites More sharing options...
Barney12 Posted August 10, 2017 Share Posted August 10, 2017 Or if the slab dimension aren't followed properly 2" inside your studwork Link to comment Share on other sites More sharing options...
ProDave Posted August 10, 2017 Share Posted August 10, 2017 Mine I put so the edge of a straight coupler was just touching the wall tight into the corner. My builder advised me this was too close. I ignored him. The theory is once I have battened my walls for the service void and then plasterboarded, the boxing in at the corner for the stack pipe will be a lot less bulky as in effect the back of the stack pipe is set 30mm in from the face of the wall already. Link to comment Share on other sites More sharing options...
Vijay Posted August 10, 2017 Author Share Posted August 10, 2017 is it important to leave a gap between the pipe and any surrounding studwork/plasterboard to stop sound getting through? Do you insulate around the pipe? Link to comment Share on other sites More sharing options...
ProDave Posted August 10, 2017 Share Posted August 10, 2017 6 minutes ago, Vijay said: is it important to leave a gap between the pipe and any surrounding studwork/plasterboard to stop sound getting through? Do you insulate around the pipe? In my case it's om the corner of the utility room. The only place sound from it can go is outside or into the garage. But good point if it's adjacent to another room. Link to comment Share on other sites More sharing options...
Vijay Posted August 10, 2017 Author Share Posted August 10, 2017 and also fireproofing between floors? Link to comment Share on other sites More sharing options...
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