How To Install A Plastic Roof Valley

Remove roofing and turn each sheet over.

How to install a plastic roof valley.

Where possible install three tab shingles so that the tabs falling over metal valleys or rake edges at the side of the house are at least four inches wide. Many roofers cut the shingles across because they say it s safer. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Thin plywood linings are fitted over the valley boards to maintain a smooth finish under a lead lined valley. Roof one side of the valley running the shingles across it.

No one of this affirmat. Shingle the other side of the valley the same way. Additional eaves closure pieces and counter battens are not required and they create a close cut appearance. What was previously a valley in the corrugations will now be a ridge and the nail hole will be in the correct place.

If fixing screws are left in the valleys your roof will leak in hundreds of places. Table 11 gives the minimum recommended valley widths for different roof pitches and plan areas. Stop nailing 6 inches from the center. In order to shingle this kind of roof valley a roofing professional has to install both roof faces at the same time which is quite slow.

You will have to paint the roof but is cheaper than buying new roofing. In this video i show you how i do the valleys on a shingle roof. All our valley troughs are made from glass reinforced plastic grp an excellent alternative to lead.