How To Install Metal Flashing In Valleys On Ondura Roof

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

How to install metal flashing in valleys on ondura roof. Place the flashing on the upper portion or the upper flange of the batten. The top joinery of both valleys when they meet on the same plane of roof is shown here. Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps. A batten is a roofing component made of a thin layer of metal plastic or wood and is used as a fixing point for roof tiles and roofing sheets.

Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. Installing ondura corrugated roofing sheets on a chicken coop duration. Step 9 cut corners and apply cement dub cut the top layer shingles see step 4 in open metal valley above. Slip a piece of sheet metal flashing under the top layer of shingles to protect the bottom layer in the valley while you cut the shingles with a hook blade.

5 common mistakes to avoid when installing metal roofing duration. With a clean valley you can lay down some peel and stick roofing membrane. Fold the top over the roof ridge and cut the bottom along the drip edge metal. I have my valley custom made with water trough to help with leaking b.

Install the valley battens on the sides of the roof that you want to place the valley flashing.