Lead Flat Roof Details

It is shaped to prevent wind lift.

Lead flat roof details.

For roof detail the gauge of lead to be used will be dependant upon the application. Whilst shaping some of the oldest and most beautiful architecture lead is regularly used in more modest commercial and domestic roofing too from whole roof coverings porches turrets and parapet roofing to modern roof waterproofing details like flashings valleys and gutters. Lead covered roofs typical of many churches and cathedrals. Non standard sizes are available.

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. One particular problem which has been the subject of increasing concern speculation and debate is the tendency for condensation on the underside of metal roofs to cause corrosion. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Lead detail lead is commonly is used as a means to complete and help maximise the efficiency of a roof s water sheddings qualities.

For additional stability you can also use steel joists that are built into one or both of the walls. 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. 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. 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.

Small over flashings or leak soakers. Thicker lead is used on longer bays joints along the length should be stepped to prevent rain seeping up through capillary action. Flat lead roofs should be laid with a slight fall. Lead sheet one of the oldest and most durable roofing materials has been known to last for over 200 years.

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. Lead code is a way of combining thickness and weight very handy to know if you re thinking about lifting it off your van and onto a roof. Lead should be laid in bays sections with joints between the bays formed over a wooden roll. Wood core roll as used on ridges hips and flat roofing wood core roll is to be used to allow for the expansion and contraction in lead sheet and flashing.

Lead for the purpose fitting to a roof or bay window really starts at code 4 in theory if the roof is small enough you could use code 3 but this would normally be classed as a flashing lead i e. Having a manual for warm flat roof construction with details and a summary of rules to follow helps.