The normal spacing between rafters about is 400mm 16 inches the closer spacing will allow small section rafters and batten that are fixed to the rafters to locate fix the slates or tiles to be used.
Slate roof cross section.
It is considered more economical to keep a rafter cross sectional dimension as low as possible however where open roof space is needed larger rafters will be necessary.
It is agreed that the roof pitch should be a minimum of 20 degrees preferably a bit more.
2011 concrete roofing tiles and fittings for roof covering and wall cladding product specifications.
Slating terms and phrases if you are not a seasoned roofer some of the terms used for slates batten spacing or overlapping of the slates can add to the confusion.
Kingspan ks1000ts slate tile support roof system featuring nulok slate tile support is an advanced insulated roof panel system designed to support either slates or tiles.
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Performance landmark slate 10s have been rigorously tested in the group wind tunnel where combinations of high wind and driving rain are used to determine the slates performance with respect to wind.
Russell roof tiles is the trading name of russell building products limited.
Performance westminster slates have been rigorously tested in the group wind tunnel where combinations of high wind and driving rain are used to determine the tile performance with respect to wind loading and weathertightness.
Roof pitch the angle of a roof not only determines what slates to use but the amount of overlap that the slate roof needs to remain waterproof.
It consists of a heavy rectangular knife blade with a large point of square cross section protruding from the poll or butt.
You consider some alternative solutions.
Westminster slates conform to bs en 1304 2013 clay roofing tiles and fittings product definitions and specifications.
Landmark slate 10s conform to bs en 490.
Roof covering typically of flat and rectangular shapes and made of various materials such as slate wood flagstone.
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Custom cross section diagram of a house roof showing the many different parts of a residential roof including structural parts the various layers exterior and various roof features such as skylight and chimney.
The blade edge is used to split slate while the point is used to pierce square holes for mounting the slate on the roof with square copper nails or making a series of small holes marking a line where the slate is broken over a slater s iron.