Pitched Lead Roof Details

Clips to hold lead permanently in position.

Pitched lead roof details.

An open valley often 100mm or 150mm wide with a metal normally lead or sometimes a grp lining. Horizontal flashings should provide weathering to a minimum of 75mm above the intersection with the roof. Wood core roll is used for joining bays of lead roofing also on steeply pitched roofs and lead cladding where a bold joint appearance is preferred. Wood core roll is to be used to allow for the expansion and contraction in lead sheet and flashing.

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. It is shaped to prevent wind lift. The base dimensions of the slates are 450mm x 450mm and the minimum upstand height at the saddle side of the pipe base joint is 150mm. Valley tiles which allow the roof to be continued round corners they are special tiles which are the opposite of a hip tile really.

However it is important to follow the basic principles of sizing and fixings as indicated in the rolled lead sheet manual to reduce the effects of fatigue cracking or creep. They can only be used when the pitches of the two roofs are identical. Slate upstands are available in five diameters from the 50mm to 150mm at angles of 30 and 45 to the base for pitched roofs and 90 for flat roofs. Our basic fitting guides are designed to assist installing rolled lead sheet in a range of roofing applications including flashings valleys gutters and flat roofing.

Non standard sizes are available. Where a flat or pitched roof over an enclosed area abuts a wall or a balcony abuts a wall cavity trays should be linked to the flashing to prevent water penetrating into an enclosed area. Lead sheet is a soft and malleable metal which means it s an excellent roofing material because it can be formed and shaped to suit any detail.