Unvented roof / Discussions

What are the options for adding Exterior Roof Insulation?

...roof depends on how it is currently built. Let us know from bottom up if you can, and your climate zone as well. Choosing a roof design is your first step, here are the very basic two types :  Vented and unvented roofs - what is the difference and which is better? SIPs is certainly a possibility, But SIPs usually come ...

Posted by Marlo Raynolds Aug. 29, 2020 Roof assemblies - renovation 4 responses

Why is there frost on the underside of my roof 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 d...

Posted by George Paul March 23, 2020 Roof assemblies - renovation 3 responses