GAF Roofing: How To Do Valleys

This video demonstrates the proper installation technique for flashing and roofing valleys • The open, woven and closed cut methods are demonstrated • Valleys are a prime leak area so it's important to be careful. . . • Use WeatherWatch or StormGuard sefl-adhering leak barriers in all valleys

Category:

Howto & Style

Tags:

• how
• to
• valley
• roof

[ArtisanTony]

There is no waterproof shingle method. All shingle systems are design to shed water from one layer to the next using gravity. There is no such thing as a waterproof shingle roofing system. This is why using a membrane under them is critical. Before the fan boys start, even the felt is not waterproof. It is a minor guard against leaks. In the real world, by the time the shingles are applied the felt has too many holes in in to be waterproof. It all acts as a system and usually does not leak

[dieselman071]

i believe he needs to take up sign language instead of roofing or go read some more brochure

[onefugowie]

give those poor guys nail guns

[Hunkerbunker346]

we use the closed cut method very rarely does a customer request open valley, open valleys appear nice but now your exposing it to all elements it's best to have the closed cut method it looks professional and protects alot better

[vlineguy]

great video thumbs up

[jimhlewis1]

I used the closed cut method on my roof and since the video didn't show them put metal valley roll in before the Weather Guard rolls I did the same. Do you think my valleys will hold up over 20 years or should I have put metal valley rolls in before?

[iRYANMB]

Great advice, Thanks!

[420southcitykid]

lol u all act like its rocket science roofing is a roofing dooggg

[godiamone]

Also, In all fashions, wouldn't it be preferrable that the shingle join at the valley point and be cut, rather than nailed and left at the end tab (referring to the cambridge installation at the end) where I see the underlying diagonal shingle is exposed and unappealing?

[godiamone]

If you are putting nails on the EDGE of the valley metal instead of directly on it and into the roof, then wouldn't that suggest room for movement, and that the sealing caulk you are applying to the edge might peel, making it nearly impossible to find leaks when a future roofer comes to investigate the leak, if the warranty has expired, or the roofing company is simply a dud?

[ItchyGoomie]

I bet this guy couldn't have did this video with his hands in his pockets

[hatchetman323]

hourly guys?