How To Roof A Valley

For the next two shingling methods closed cut and long island valleys i work out of the valley using laminated shingles instead of working toward the valley with three tab shingles.

How to roof a valley.

The open woven and closed cut methods are demonstrated. Overlap metal roof valley sections by 12 inches and seal the lap with a flexible sealant such as polyurethane or butyl on roofs shallower than 5 12. Closed cut and long island roof valleys. Iko recommends that you install architectural shingles with the open valley method for the best roof performance.

Valleys are a prime leak area so it s important to be careful. Stop nailing 6 inches from the center. Roof one side of the valley running the shingles across it. You can see in our roof valley photo left that there has been a history of.

A roof valley is very prone to leaks especially if you have an older roof. 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. The three methods to shingle a roof valley. This recommendation includes iko s premium shingles.

No one of this affirmat. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof. Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.

In this video i show you how i do the valleys on a shingle roof. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys. Shingle the other side of the valley the same way. Shingling both a closed cut valley and a long island valley is the same for the first half of the process.

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. Where two roof valleys meet for example above a gable dormer a soldered joint is likely to break from the movement. 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.