Slate Roof Insulation

Roofing felt was introduced primarily to act as a secondary barrier against wind driven snow and rain but its use also causes a reduction in air movement within the roof space particularly if the roofing felt is impervious and this effect is often compounded by the introduction of insulation.

Slate roof insulation.

A slate roof can cost from 12 to 40 per square foot according to websites and roofers i consulted. Check the depth between your trusses and the slates then install the correct thickness of kingspan in the gaps allowing for a 25mm air gap between the kingspan and the slates. A well ventilated roof space is good this stops your timbers rotting. The best way is to insulate the attic floor.

Slate roofs national slate association 1926. With a warm roof the usual process is to split the insulation into two layers. 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. Asphalt shingles are a good basic go to with a relatively low initial.

Depending on what roof type you choose for your structure you may be using roof tiles ridge caps roofing sheets underlayment and roof insulation. For people who do not plan to ever sell their home the incredible longevity of slate is a highly desirable benefit. Many slate tile manufacturers offer up to 100 year warranty on their products. Slate roofing 1 4 inch slates.

Slate roofing 3 8 inch slates. Slate roofing 3 16 inch slates. Slate roofs national slate association 1926. After installation the nail heads will rub against the overlying slates and eventually wear holes in them.

Thicker slates are ok to be drilled as there is usually room between them for a nail head. If you want to insulate the sloping roof you definitely don t want to install spray foam against the back side of the slates. A slate roof will easily last over 100 years which is at least double of what other roofing materials can offer. Slate roofs national slate association 1926.

Your price will be on the lower end if you use recycled slates or reinstall your own. Http www spraysealroofinsulation co uk spray foam insulation being applied to the underside of a slate roof. Standard thickness roofing slates 3 16 inch to 1 4 inch that have drilled holes without counter sinking are sub standard slates.