/diy/ - Do It Yourself

>>2707697
copper should not be used as a sewer vent, hydrogen sulfide and copper do not get along.

>>2707716
I recently did this exact job at my house. I have a tar shingle roof so if you don't, fuck this, but here are the steps i did.
1 pick spot for vent
2 measure width of vent
3 cut shingles 1/2 of vent thickness on each 4side of nail, use speed square to cut the entire shingle to the next one up and remove obstructing flap with pry bar
4 break the seal of the surrounding shingles to slide vent under, check fit with vent
5 drill the hole
6 pull back insulation on duct, insert roof collar into duct and tape with aluminum tape
7 pull back insulation on duct, attach to fan outlet and seal with aluminium tape, zip tip insulation closed
8 cut 2 tabs on roof collar and nail to the roof
9 caulk top and side of vent, do not caulk bottom side
10 lift shingles and slide vent under, push down and work vent tight
11 lift shingles and nail vent to roof
12 reseal all lifted shingles, in the row with the vent, on all edges
13 lift the next shingles and nail vent to roof
14 caulk across the top of the vent

picrel is the outside vent before cover