Pitched Slate Roof Construction Detail

Weight of slates kg area of roof m 2 slate coverage 1000 therefore the total weight.

Pitched slate roof construction detail.

Roof pitch 40 roof area m 2 150 length of roof slope m 9 5 the headlap can be found from table 1 by reference to slate size roof pitch and exposure 65 mm. The minimum pitching or sloping degree for the roof is decided by the minimum slope necessary for excluding the roof covering and drain rainwater to eaves or valley gutter. This is more of a traditional manner in regards to cutting the timber while onsite and building up the roof by the use of rafters ridge boards joists and purlins among others. This can be determined by the size of the timbers or the size of the roof.

Construction details of pitched roof. One of the areas of a pitched roof most prone to leakage if not constructed properly is the valley. Pitched roof detail the way that the tile is held on the roof differs slightly according to the material used. Pitched roofs are generally provided with a pitch of about 20 degrees to the horizontal for slates and 40 to 60 degrees for tiles.

The total weight of slates on roof can be found from the formula. It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential. One pitched roof construction method is a cut roof method. The slate coverage per m2 can be found from table 2 23 9.

When slating with a shallow pitch a wide slate is highly recommended for maximum side lap or lateral lap side overlaps. 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.