Building Construction Handbook, Eighth Edition
Valley construction and associated pitched roofing is used: to visually enhance an otherwise plain roof structure. where the ro ...
Sprockets may be provided at the eaves to reduce the slope of a pitched roof. Sprockets are generally most suitable for use on w ...
Roof Underlays ~ sometimes called sarking or roofing felt provides the barrier to the entry of snow, wind and rain blown between ...
Double Lap Tiles ~ these are the traditional tile covering for pitched roofs and are available made from clay and concrete and a ...
Hand made from extracted clay sub-strata. Sources of suitable clay in the UK are the brick making areas of Kent, Sussex and Leic ...
Typical details (cold roof) ~ timber battens underlay rafters ceiling joists insulation between and over joists vapour-check pla ...
Note 1. If a cavity closer is also required to function as a cavity barrier to prevent fire spread, it should provide at least 3 ...
Typical detail (warm roof) ~ Where a roof space is used for habitable space, insulation must be provided within the roof slope. ...
Insulation in between rafters is an alternative to placing it above. The following details show two possibilities, where if requ ...
Double Lap Tiling ...
Double Lap Tiling ...
Single Lap Tiling ~ so called because the single lap of one tile over another provides the weather tightness as opposed to the t ...
lap margin underside of deep profiles filled with filler piece or bedded in cm.mt. on eaves course of plain tiles margin = gauge ...
Slates ~ slate is a natural dense material which can be split into thin sheets and cut to form a small unit covering suitable fo ...
The UK has been supplied with its own slate resources from quarries in Wales, Cornwall and Westermorland. Imported slate is also ...
Traditional slate names and sizes (mm) † Empress (^650) ¾ 400 Wide Viscountess (^460) ¾ 255 Princess (^610) ¾ 355 Viscountess (^ ...
Roof hip examples † Roof Slating --- Applications ...
Roof valley examples † Note: In swept valleys, cut and tapered slates are interleaved with 1.25 mm lead soakers. Roof Slating -- ...
Materials † water reed (Norfolk reed), wheat straw (Spring or Winter), Winter being the most suitable. Wheat for thatch is often ...
Flat Roofs ~ these roofs are very seldom flat with a pitch of 0° but are considered to be flat if the pitch does not exceed 10°. ...
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