Robert Evans' Jr Blog

Roofing Valleys Correctly

Posted by Robert Evans on Feb 20, 2019 10:59:42 AM

Welcome to Robert Evans Jr. Contracting

Weaved Valley

Depending on your roof design you may or may not have valleys. A Valley is where 2 roof lines come together. Here is a picture of Robert Evans JR. Contracting Inc. installing a Weaved "Closed valley".  Closed valleys are those where shingles on one or both sides of the roof extend across the valley onto the adjacent roof slope. There is two kinds of closed valleys: cut valleys, which are less expensive to install {due to less waste in material and quicker labor install} and are the most common, and there are woven valleys as you see above in this picture. When Installing the woven method, shingles from both roof slopes run through onto the adjacent slope, alternating with each course. This is done differently with different types of roofing shingles depending on 3-tab, thickness, archtectural type shingles. Woven valleys is not recommended to be installed on a roof pitch less than 4:12. 

Tags: roofing metrowest, Commercial roof, www.certainteed.com, www.gaf.com, roof newton, roofs, CDX plywood, Certainteed Lifetime roof, Architectural shingles, Certainteed Landmark, ice and water barrier, roof Framingham, Gaf, gaf timberline shingles, cobra ridge vent, roof metrowest, roof natick, roof installation, roof leaks, wayland ma., roof leak