I’m running a 2" DWV pipe up through an almost flat roof (~1/12). The roof is granular asphalt (10 yrs, will be replaced in next year +/-). Because the DWV is within 10 feet of an operatable skylight, the pipe will extend 36" above the roof.
- What is an appropriate, cost-effective (will be removed in next year) means to flash the pipe?
Possibly Oatey 2" Galvanized flashing Oatey® Galvanized No-Calk® Roof Flashings/18" X 18" Base | Oatey with caulking on the underside near edges, nailed near edge into place and acrylic flashing and mesh on top of the edges?
- Is there an effective means to seal around the penetration of the roof? The roof system from top to interior is
Modified bitumen (granular asphalt)