How To Install Metal Flashing In Valleys On Ondura Roof

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.

How to install metal flashing in valleys on ondura roof.

Installing ondura corrugated roofing sheets on a chicken coop duration. I have my valley custom made with water trough to help with leaking b. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. 5 common mistakes to avoid when installing metal roofing duration.

Place the flashing on the upper portion or the upper flange of the batten. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Install an underlayment centered in the roof valley. 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.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. Lay the flashing in a way that. Step 9 cut corners and apply cement dub cut the top layer shingles see step 4 in open metal valley above. With a clean valley you can lay down some peel and stick roofing membrane.

The top joinery of both valleys when they meet on the same plane of roof is shown here.