Valley Roof Installation

Roof one side of the valley running the shingles across it.

Valley roof installation.

Proper valley flashing installation isn t difficult to achieve. Even so a high percentage of valley flashings are not installed properly because the roof repair company does know the. This valley looks the same as a cut valley only it s faster to install. Where two roof valleys meet for example above a gable dormer a soldered joint is likely to break from the movement.

Continue adding panels until the roof is covered. Screw the new panel in place as described. In fact following a few basic installation procedures will typically achieve a reliable installation. Shingle the other side of the valley the same way.

Install the panel so that the short lip overlaps the large lip. Preparation of the valley with an underlayment is a critical part of your roof installation. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. You can see in our roof valley photo left that there has been a history of.

Although this valley system isn t entirely new you won t find it described on shingle wrappers. The underlayment is an integral part of every valley and provides a waterproof base all valley installations require appropriate underlayment layers. The silicone will spread and adhere creating a seal. What is a closed valley roof.

A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types. Incorporated into the underlayment may be a self adhering ice and water shield or another type of underlayment that is a heavier gauge than the underlayment that covers the remainder of the. Stop nailing 6 inches from the center. Long island valley a young roofer from long island first showed me what i now call a long island valley.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. The cut edge then is sealed with roof cement. Posted february 17 2017 filed under roof installation. You may need to cut panels to fit angles using a circular saw with a metal saw blade.

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. The three methods to shingle a roof valley.