For pitches of 2 5 12 up to 4 12 the roof requires double underlayment.
Pitched slate roof construction detail.
A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc.
Weight of slates kg area of roof m 2 slate coverage 1000 therefore the total weight.
A pitched roof is a roof that slopes downwards typically in two parts at an angle from a central ridge but sometimes in one part from one edge to another.
The pitch of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness.
Pitched roof construction there are two basic methods of pitched roof construction.
Construction details of pitched roof.
What roof pitch do i need for what slate size.
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.
4 12 to 20 12 pitches.
The triangle section can be left open for an open gable roof or it can be enclosed for a boxed gable roof.
A crossed gable roof is two gable roof sections put together at a right angle.
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 total weight of slates on roof can be found from the formula.
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 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.
It has two equal panels pitched at an angle meet at a ridge in the middle of a building.
The slate coverage per m2 can be found from table 2 23 9.
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.
When slating with a shallow pitch a wide slate is highly recommended for maximum side lap or lateral lap side overlaps.
Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.
Pitched roof detail the way that the tile is held on the roof differs slightly according to the material used.
Clay or cement tiles can be used on a wide range of roof pitches.
One pitched roof construction method is a cut roof method.
Slopes above 19 12 are not recommended since tiles on very steep roofs can rattle.
