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- Estes Park, Colorado
I am replacing the DWV in PVC for a washing machine. (Everything was done incorrectly in 1.5” and I am changing it all to 2”.) That said, the current vent up through the roof and boot on the roof is for 1.5”. Can I reduce my new 2” PVC vent to 1.5” PVC at the roof or do I need to maintain 2” through the roof? (Meaning I need to change the roof boot.) Thanks in advance!