Venting through the roof

[gmb]

Just wondering what guys use when you vent up through the roof with 636 ? Just seal around opening with silicone, or use a roof jack or a type of plumbing roof flange with a rubber gasket?

[hearthman]

You should have clarified you are speaking about Canucks as in north of the border where the CAT IV plastic venting must be listed to ULC S636.

Not from the Great North but offsets should be supported and the roof jack and height above roof per the listing. Should be spelled out.