I am restoring what was once a ensuite bathroom turned walk-in closet back into an ensuite. I am rebuilding the drains for the shower, toilet and sink that I will be adding. As this is on the top storey of the house, all three will be draining into the same 3" ABS and then down into the basement drain.
My question is, do I need to install an expansion joint in the 3" vent that goes up to the roof? If so, what are my options? I live in Edmonton, Alberta, Canada, where the weather ranges from -22 f in the winter to 86 f in the summer.
Last edited by mforeman1; 02-22-2011 at 09:21 PM.