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It rots roofs people have told me.
Under roof insulation spray foam. Murmurs and hearsay about open cell spray foam insulation have been gaining traction for a while. Spray foam insulation is a great product. Spray foam insulation and what do surveyors think 1stassociated can provide help and advice with regard to structural defects reports for things like problems with your roof insulation window problems dampness lateral dampness condensation cracking movement. I can also tell you that 73 of all statistics are made up on the spot so please don t ask for.
Spray foam insulation is versatile and can be used to insulate your roof loft walls and floor. Despite the advantages of using spray foam under the roof deck there are some potential risks. Spray foam insulation within roofs does it work. Spray foam insulation also called spray foam or spray polyurethane foam spf is an alternative to traditional building insulation.
The spray foam can also serve as the thermal and vapor control layers in both new and retrofit construction. I have a conditioned attic currently insulated with r19 fiberbatts between the rafters. Unvented roof strategies with open cell and closed cell spray polyurethane foam insulation sprayed to the underside of roof sheathing have been used since the mid 1990 s to provide durable and efficient building enclosures. The attic is unvented for instance no ridge vent exists.
Not long ago someone even told me that in florida roofing companies won t let their workers go up on roofs with open cell spray foam because the roofs are so spongy the guys fall right through. I ve been in plenty of these homes and can tell you that when spray foam is installed properly they outperform 99 of fiberglass batt insulated stick built homes. No airsealing hence i want to remove the fiberbatts and spray 3 inches of closed cell spray foam in before putting the fiberbatts back in place. But spray foam insulation used at the underside of the roof deck would need to be covered by a thermal barrier and intumescent coatings are commonly used.
Should i put any membrane or the like on the underside of the roof sheathing before spraying the foam in. Homes insulated with it can be some of the most efficient and comfortable homes built.
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