Pitched Slate Roof Construction Detail

Construction details of pitched roof.

Pitched slate roof construction detail. Pitched roofs are generally provided with a pitch of about 20 degrees to the horizontal for slates and 40 to 60 degrees for tiles. It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential. When slating with a shallow pitch a wide slate is highly recommended for maximum side lap or lateral lap side overlaps. One pitched roof construction method is a cut roof method.

The slate coverage per m2 can be found from table 2 23 9. This can be determined by the size of the timbers or the size of the roof. Clay and concrete tiles have retaining nibs on the back of the tile which rest on the wooden lath slates which are essentially sheet materials have holes drilled in them and then nails are hammered though the holes into the wooden lath. Weight of slates kg area of roof m 2 slate coverage 1000 therefore the total weight.

A common misconception is that the mortar bedding is there to prevent water access. What roof pitch do i need for what slate size. Generally speaking 20 degrees is the lowest advisable pitch for a slate roof depending on the size of the slates and how much that the roof is exposed to moderate weather conditions. The total weight of slates on roof can be found from the formula.

Pitched roof detail the way that the tile is held on the roof differs slightly according to the material used. One of the areas of a pitched roof most prone to leakage if not constructed properly is the valley.