Valley Metal On Roof

Best practices for sealing the metal roof valley vary based on the slope of the roof.

Valley metal on roof.

Closed cut valley fully replaced with new metal valley flashing. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. How to seal metal roof valley. An open valley relies on metal flashing for protection.

For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. The metal is usually pre painted to best complement the shingles color blend. Some homeowners do not like the look of open valleys while others feel the metal accentuates the roof s shape particularly if copper or painted flashing is used. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

Roofing shingles are installed then cut and sealed where they overlap the metal channel. Punctures in the center of the valley. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Fasteners placed in the exposed center area.

Masterrib is a 36 wide 5 r. That flashing is left exposed so the roof has visible lines of metal running down the valley. No sales pitch or other fluff. Open valleys on the other hand leave the metal exposed which may be more pleasing to the eye especially if copper is used as the valley lining.

Whether for slate shingle or metal roofing valley flashing adds detail and helps to direct water. Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof. Why is a metal valley important while there are a number of materials that can be used in roof valleys metal provides the most durable longest lasting solution. This will reduce the installed cost of the project.

Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. With a clean valley you can lay down some peel and stick roofing membrane. Contractors may be able to reduce the cost of materials on roofing projects by eliminating the metal being installed in the valleys. Roof mastic applied along sides of valley flashing.

Failure to extend the entire width of the metal valley flashing beyond the eave of the roof. Valleys are a very important part of a well designed roofing system.