Slate Roof Lead Valley Detail

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Slate roof lead valley detail.

Click to enlarge any image overlap metal roof valley sections by 12 inches and seal the lap with a flexible sealant such as polyurethane or butyl on roofs shallower than 5 12. But because the slaters produced their own slates and traveled with them to wherever collyweston slates were specified the laced valley went too. Vermont slate offers the widest range of roofing slates in the market with more than 40 000 combinations of models sizes and shapes. Fixing sequence at mitred valley 1 lay a strip of underlay 600 mm wide over the valley underlapping the main underlay.

4 or 5 lead slates chimney flashings back gutters apron and side flashings parapet box and tapered gutters 5 to 8. The detail shows a typical open valley flashing for a shingle or slate roof. Soakers 3 or 4 apron and cover flashings hip and ridge flashings pitched valley gutters weatherings to cornices parapets etc. A common misconception is that the mortar bedding is there to prevent water access.

In the east midlands where collyweston limestone slates are produced the laced valley is the normal detail. The cant strip can also be constructed as shown in detail 9 5d. Table 2 thickness of lead sheet for various purposes use bs en12588 code no. 3 fix slates to interleave with code 3 lead or stainless steel soakers nailed to battens at the top edge to provide a straight weathertight close mitred joint.

Lead lined valley one of the areas of a pitched roof most prone to leakage if not constructed properly is the valley. Below is a photo of a buckled cracked and leaking roof valley caused by just this problem. 2 cut slate and a half carefully ensuring that adequate width is maintained at the tail. The shingles or slate must lap the flashing at least 6.

It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential. Slate is the best roofing material known to men. Download this free 2d cad block of a typical slate valley gutter lead detail including annotations and dimensions. Autocad 2000 dwg format for a full range of ssq natural slate tiles please visit.

This video shows how to cut valley slates in a fast accurate and professional manner. Two different cants are illustrated. This autocad detail can be used in your roof design cad drawings.