How To Roof A Valley With Tin

Be sure to check local building codes to ensure you have the proper width for your application.

How to roof a valley with tin. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Special pricing available for large quantities. In this video i show you how i do the valleys on a shingle roof.

Roof one side of the valley running the shingles across it. Shingle the other side of the valley the same way. Stop nailing 6 inches from the center. W valley flashing protects the critical area of your roof where two slopes come together to form a valley.

Roof valleys are like gutters with a steep pitch but the stakes are higher for valleys than they are for gutters. No one of this affirmat. The reason why the roof valley is such a sensitive area has to do with all the rainwater and or melting snow that accumulates and flows through the valley on its way into the gutters. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant.

Many roofers cut the shingles across because they say it s safer. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. Valley flashings are custom fabricated to any measurements and angles and usually measure 10 in length but can also be bent in 12 lengths. Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. A roof valley is formed where two roof slopes meet. We can also match any profile. Best practices for sealing the metal roof valley vary based on the slope of the roof.

First clean the debris out of the valley including sawdust nails and whatever else is in there. Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. In a previous video we covered how to flash roof edges before shingling. Painted terne steel with a lead and tin coating.

In this video we ll flash the valley. Water collects in a valley to flow off the roof. How to seal metal roof valley.