Posted: 6/4/2015 11:23:01 PM EDT
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OK, my composition roof is about 25 years old, Timberline shingles, they have been excellent, but they are worn out. I understand Timberline shingles aren't what they used to be, changes in technology, changes on ownership etc, and its not a good choice anymore. Main question is about the "valleys" in the roof, currently the valleys have a metal channel in them, one roofer that gave me an estimate tells me the common method these days is to actually run shingles down the valley, metal channels can be put in but they cost more and the shingle method works fine. Any truth to that? I don't know much about roofing, so any educated advice would be helpful. |
I dunno that one is better than the other. I've done 3 roofs, two for myself and one for a friend. I put the roofing felt down, ran a piece of roll roofing down the valleys and then laid the shingles. There are two ways you can do it with shingles: lacing and overlapping. Google them. It'll be better than me trying to explain it. 
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Timberline is a GAF/ELK product and they are good to go as a company. The Timberline is their 30 your shingle. You can upgrade to a Armour shield shingle that looks the same but is thicker and has a higher impact and wind rating.
The valleys vary by roofer, we have some that use the metal valley and some that weave the valleys the roofer that did my house in 2009 weaved the valleys. A lot of advancements have been made in he way of felt, there is a now a synthetic felt that a lot of roofers are using as well as the 30 pound and 15 pound rolls that have been used for years. Don't forget ventilation, a lot of roofs are now using the ridge vent system. |