Table 12 states that the minimum pitch for double lap slate roofing is 20 degrees subject to headlap but it gives no further explanation regarding the circumstances in which the minimum would apply.
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.
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13 is diagrammatic perspective view of a tiled roof tiled with the slates of fig.
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.
1 or plain tiles of fig.
It consists of a heavy rectangular knife blade with a large point of square cross section protruding from the poll or butt.
Nhbc standards would be reliable but in this instance they don t really provide enough information.
Roof covering typically of flat and rectangular shapes and made of various materials such as slate wood flagstone.
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.
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.
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.
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.
Midnight gray rubber slate shingles double roof madison rails victorian braces gray floor 10 x 12 rectangle featuring a simplistic four sided design the rectangle allows you to maximize interior space without sacrificing the refined look of the exterior.
Westminster slates conform to bs en 1304 2013 clay roofing tiles and fittings product definitions and specifications.
10 and 11 are cross sections taken along the lines a a and b b respectively of fig.
12 is a diagrammatic cross section through a roof structure tiled with the concrete slates of fig.
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