How To Install Roof Valley Boards

Dry fix valley troughs are mortar free providing hidden water gulleys at the roof valleys.

How to install roof valley boards.

No one of this affirmat. Install an underlayment centered in the roof valley. Place the first screw. Soup to nuts riley shows the proper way of installing a valley on a roof.

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. As you install roof shingles on the second roof plane you allow them to lap over the valley on top of the first shingles. It is essential to only use whole not cut shingles during this step. Make sure the underlayment lies smooth before you nail the top edge.

Stop nailing 6 inches from the center. Shingle the other side of the valley the same way. Open valley troughs have been designed as an alternative to traditional lead troughs a safe and efficient way to collect rainwater run off. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at.

Install the roofing screws vertically along each rib in the panel. Rip the tops of the fascia boards to match the slope of your roof. In this video i show you how i do the valleys on a shingle roof. Project step by step 15 roll out the self stick underlayment.

Many roofers cut the shingles across because they say it s safer. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Then pull off the. Set the angle of the circular saw blade to match the slope of your roof and run the saw along the top edge of each fascia board.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. In summary during the installation of a closed cut valley you install the first roof plane s shingles into the valley. Making the tops of your fascia boards the same angle as the roof allows you to easily place roofing material over them without creating bumps or ridges. Roof one side of the valley running the shingles across it.

Protect the roof against ice dams and windblown rain with self stick ice and water. Peel off the bottom backing. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. Stick on the underlayment.