Below is a photo of a buckled cracked and leaking roof valley caused by just this problem.
Slate roof lead valley detail.
Table 2 thickness of lead sheet for various purposes use bs en12588 code no.
This video shows how to cut valley slates in a fast accurate and professional manner.
Here you can find instructions for installing a slate roof repairing and restoring slate roofs and repairing asbestos roofs and ceramic tile roofs.
Vermont slate offers the widest range of roofing slates in the market with more than 40 000 combinations of models sizes and shapes.
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.
This autocad detail can be used in your roof design cad drawings.
The shingles or slate must lap the flashing at least 6.
Fixing sequence at mitred valley 1 lay a strip of underlay 600 mm wide over the valley underlapping the main underlay.
Slate roof central basic instructions on how to install slate roof hips and ridges slate roof central is your center hub for all things related to natural quarried slate roofing.
The detail shows a typical open valley flashing for a shingle or slate roof.
In the east midlands where collyweston limestone slates are produced the laced valley is the normal detail.
Lead lined valley one of the areas of a pitched roof most prone to leakage if not constructed properly is the valley.
It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential.
A common misconception is that the mortar bedding is there to prevent water access.
Soakers 3 or 4 apron and cover flashings hip and ridge flashings pitched valley gutters weatherings to cornices parapets etc.
2 cut slate and a half carefully ensuring that adequate width is maintained at the tail.
But because the slaters produced their own slates and traveled with them to wherever collyweston slates were specified the laced valley went too.
Slate versions are seen in wales aa well as the half swept or single cut.
Two different cants are illustrated.
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.
Slate is the best roofing material known to men.
A natural material that lasts over 100 years and guarantees a perfect performance in any condition.
Download this free 2d cad block of a typical slate valley gutter lead detail including annotations and dimensions.
