Attic Sprayfoam Around Vent Pipes

The leaking may first be seen in the attic but if you don t catch it right away you may see water coming into the house dripping on the floor.

Attic sprayfoam around vent pipes. My training tells me this would not be ok because of moisture odors unhealthy gas etc not to mention ability for insulation and mice to go down. In this case the attic is still vented and the attic floor insulation will remain. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents. You then see blue on the roof line where cold air is leaking in.

Greetings this is the first time i have seen open plumbing vents in attic and btw no roof exhaust vents either it was constructed 2014. What is a plumbing vent. Earlier this year i got a question about a home that had spray foam insulation in the attic. I have a customer that we are doing some work in the attic for and i noticed yesterday that the plumbing is vented up into the attic phew and not thru the roof.

For other homes the pipes might be located in the walls or the roof rafters. Roof leaks around vent pipes is relatively common. It is in missouri which i think they may allow aavs on a limited basis but i don t see how this is ok at. The plumbing vent also known as a vent stack helps regulate the air pressure in your plumbing system.

Find out where. There are 3 vents in one area and 2 in another. To start your home insulation project look for openings where pipes wiring and ducts penetrate walls and floors. Attic condensation is due to humid air leaking or vented into the attic.

Vent humid air from kitchens and bathrooms to the outside instead of the attic to avoid this problem. Nothing unusual about that. I see situations around like this sometimes. Don t forget to check your basement insulation and crawlspace insulation as well.

You will need to locate the pipes in your attic obviously to measure them and know what level of difficulty you will have in covering them. Just as drain pipes remove water and waste from your home the plumbing vent pipe also known as a plumbing air vent removes gas and odors it also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water. I like the idea of the wrap especially since this area is a 4 12 pitch and to effectively tin and fire caulk would be a real feat versus wrapping then spraying at each end to seal. If the intent of installing spf to the roof deck was to create a conditioned attic non vented then the recommendation would be to first remove any insulation and vapor retarder from the attic floor then to install spf on the roof deck and gable walls.

That whole area of my attic is hot as viewed through their thermal camera.