Roof Valley Flashing

Make sure to cover the gap at the bottom of the raised ridge to keep bugs and ice out.

Roof valley 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. Make sure that all of the procedures preceding roof flashing are done so that you can flash the roof valley properly. Special pricing available for large quantities. Using clips permits movement in the valley as temperatures change.

Cut the top layer of shingles along the chalkline. Be sure to check local building codes to ensure you have the proper width for your application. Step 2 consider your available flashing options. Install an underlayment centered in the roof valley.

Riverside provides roof valley flashing for general contractors roofers and do it yourself home owners. 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. These procedures include underlayment laying of a waterproof membrane and rolling out of builder s felt. Use roof valley cleats at intervals of 24 o c.

Get free shipping on qualified valley flashing roof flashing or buy online pick up in store today in the building materials department. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. 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. Flashing cannot be done if these processes are not completed first.

An open valley relies on metal flashing for protection. Cut the bottom edge and fold it down over the drip edge. That flashing is left exposed so the roof has visible lines of metal running down the valley. Step 9 cut corners and apply cement.

When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. Flashing a humpy old roof valley requires a little give and take and a backup plan. W valley flashing protects the critical area of your roof where two slopes come together to form a valley. The installer fabricates simple clips or valley flashing cleats whose bent edge interlocks with the folded over or hemmed edges of the metal roof valley flashing to secure the valley to the roof deck.