How Do I Install Metal Roofing In A Valley

That flashing is left exposed so the roof has visible lines of metal running down the valley.

How do i install metal roofing in a valley.

Then install a non corrosive metal valley flashing of 24 minimum width. When installing metal valley flashing there are a few things to keep in mind from cutting metal roofing to sealing the flashing. 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. Although you can install corrugated metal roofing over shingles for the best foundation it is recommended that all the old roofing be removed.

The top joinery of both valleys when they meet on the same plane of roof is shown here. No sales pitch or other fluff. Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once. Metal valley trim also known as metal valley flashing is beneficial because it drains water away from the structure of your metal building which helps prevent moisture damage.

Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Masterrib is a 36 wide 5 r. Remove the old roofing. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

With a clean valley you can lay down some peel and stick roofing membrane. Iko recommends installing an open valley with architectural or laminated shingles. Install an underlayment centered in the roof valley. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

Consult the guide for your shingle brand to determine the specific method of installation required to preserve the warranty. Recommended procedures of basic valley flashing installation.