Spray Foam Insulation Slate Roof

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Spray foam insulation slate roof. Moisture generated indoors or that infiltrates into the home is responsible for the bulk of the moisture in an attic insulated with spray foam on the underside of the roof sheathing. Spray foam insulates a roof far better than traditional insulating materials such as rock wool fiberglass cellulose and polystyrene boards it also expands into every gap and crevice creating a seal which prevents the infiltration of cold drafts wind and driving rain. If you want to insulate the sloping roof you definitely don t want to install spray foam against the back side of the slates. We specialise in a range of different roofing services to fit your individual needs.

2 increases the insulation in a roof and protects water tanks and pipes from freezing. Lstiburek takes blame for bad language. You would first have to create a vent channel under the slates by installing 1x1 sticks at the top of each rafter bay followed by stiff material like rigid foam or plywood. Froth pak 620 sealant 2 component foam insulation kit a tank b tank 30 hose closed cell quick cure polyurethane expanding spray foam 3 9 out of 5 stars 16 759 00 759.

If you use spray foam the slates can not be re used when re roofing. The main areas of concern are that replacement of the roof in the future will be a more costly and time consuming job and the slates cannot be reused. Spray foam also acts as a sound barrier muting and reducing outside noises. Spray foam insulation is a better insulator than mineral wool loft insulation as you need less of it to get the same insulating effect.

You may also loose ventilation and the roof structure can then suffer from condensation. It s not coming from above the roof and it s not some new moisture source resulting from the spray foam. The insulation may also have poor. Overall spray foam insulation when used on a slate roof will ensure it lasts longer and will provide additional structural support.