Roof With Ridge Vents Is Getting Spay Foam Insulation

Cathedral roofs especially need a lot more insulation between the ceiling and the rafters because there usually isn t any attic space.

Roof with ridge vents is getting spay foam insulation.

Roof vents are great for allowing air to move and for removing toxic odours from the home. That means you get rid of all attic ventilation whether it s passive ridge gable soffit vents or active fans. All insulation materials require proper venting. The point i m making here is that a sealed attic should be well all sealed up.

However many people think that roof vents cannot be used in conjunction with spray foam insulation. Actually you should probably get rid of power attic ventilators whether or not you re sealing the attic but that s another article. Rigid foam and spray foam are two of them. One of the biggest benefits of using spray foam is to get greater airtightness.

You re looking to insulate your attic and are wondering if you need roof vents with spray foam insulation. Spray polyurethane foam is a chemical product that is created by two materials isocyanate and polyol resin that will react with each other when they are mixed and will expand up to 30 to 60 times its liquid volume as it is sprayed in place. Learn how the need for roof vents are determined.