Here's a new one that I'm hoping someone can help with. My new house with a flat roof and substantial overhang is causing a problem that's difficult to solve. Frost is building up on the underside of the overhang roof deck and when the sun/temperature gets warmer there is water that drips through the tongue and groove soffitting. Please note that the soffits are non vented as the flat roof/attic area of the house is spray foamed so that the "rim joist" of the roof is spray foamed as well as the under deck of the roof area. I do however have led wafer lights in the soffitting and believe that this could be causing the frost build up. However another contractor has told me that you need moisture for frost to occur and that the lights themselves would not cause this. I'm not so sure about that and have had conflicting answers in that regard. Any opinions on this would be greatly appreciated. Thank you.
What is the best insulation Under 2" Cement flat Roof in NYC?
Posted by Rafael Mor March 29, 2019 Roof assemblies - new construction 1 response
Is There a Difference Between an Air Barrier and vapor barrier?
Posted by Sherri Mccormick Aug. 17, 2018 Roof assemblies - renovation 3 responses
Why do I have condensation on my ceiling and how do I fix it?
Posted by bruce chambers Nov. 5, 2021 Walls and Roofs 5 responses
What are the options for adding Exterior Roof Insulation?
Posted by Marlo Raynolds Aug. 29, 2020 Roof assemblies - renovation 4 responses
is a double vapor barrier on a South Florida roof bad?
Posted by Arthur Moore April 6, 2020 Roof assemblies - renovation
Why is there condensation behind my vapor barrier?
Posted by John Young Oct. 11, 2021 Wall assemblies - new construction 1 response
I want to insulate the outside of my house, which type of insulation do you think is best?
Posted by J. Ferguson Nov. 15, 2017 Wall assemblies - renovation 13 responses
How do you insulate an attic in Victorian House in Massachusetts?
Posted by dan sagalyn Dec. 5, 2020 Roof assemblies - renovation
I have many issues with my house where should I start?
Posted by Bryan Squirrell Sept. 29, 2019 Wall assemblies - renovation 1 response
Why is there mold on particle board outside vapor barrier on new addition?
Posted by Christine ML June 7, 2020 Wall assemblies - renovation 1 response
Why is there frost build up on basement walls? (poured concrete)
Posted by William Hackett April 7, 2022 Basements improvements 1 response
What is the best exterior Wall and Roof Rigid Insulation for a barn renovation?
Posted by Ron Busch June 27, 2020 Wall assemblies - renovation 1 response
What is the best WRB membrane or house wrap for a roof sheathed with plywood?
Posted by John Lindstrom April 11, 2022 Roof assemblies - new construction 1 response
What considerations should be made when installing a green roof on a metal building?
Posted by Nina Flores Feb. 16, 2020 Roof coverings 3 responses
Insulation on interior or exterior of frost wall - or both - for floating slab?
Posted by Marc-Andre Roy Oct. 4, 2021 Slab on Grade 7 responses
What's the best way to seal a crawl space and insulate?
Posted by Steven Johnston Feb. 23, 2021 Crawl spaces 1 response
Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?
Posted by Anomika Singhn Oct. 1, 2018 Air and vapour barriers 1 response
Is spray foam a good way to insulate a house from the exterior?
Posted by Simon Levitt Dec. 21, 2020 Wall assemblies - renovation 1 response