Slate Roof Insulation

There are different types of roof shingles roof tiles and paneling some more decorative and others more functional.

Slate roof insulation.

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. Slate roofing 1 4 inch slates. For people who do not plan to ever sell their home the incredible longevity of slate is a highly desirable benefit. After installation the nail heads will rub against the overlying slates and eventually wear holes in them.

A slate roof can cost from 12 to 40 per square foot according to websites and roofers i consulted. Standard thickness roofing slates 3 16 inch to 1 4 inch that have drilled holes without counter sinking are sub standard slates. Many slate tile manufacturers offer up to 100 year warranty on their products. A well ventilated roof space is good this stops your timbers rotting.

A slate roof will easily last over 100 years which is at least double of what other roofing materials can offer. If you want to insulate the sloping roof you definitely don t want to install spray foam against the back side of the slates. Answered 14th jan 2013 like 2. If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters.

Thicker slates are ok to be drilled as there is usually room between them for a nail head. 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 roofing 3 16 inch slates. Slate roofs national slate association 1926.

Http www spraysealroofinsulation co uk spray foam insulation being applied to the underside of a slate roof. Slate roofs national slate association 1926. Slate roofs national slate association 1926. Slate roofing 3 8 inch slates.

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. With a warm roof the usual process is to split the insulation into two layers.