New roof questions (roofing, installation, leaking, cost)

[cgar22]

Looking at getting a new roof. I am having some problems with leaking near where the aluminum valley flashing meets the shingles. One of the new roofing companies wants to just use shingles in the valleys instead of the aluminum.

Is this OK or something that I should insist on the aluminum?

Thanks for your input.

[texdav]

Sure its been done for years. there is also a bubber stick on that can be used under the shingles on certain roofs valley as when the pitch of roof is low.

[escanlan]

Hello cgar22,

You can use a fully or half woven valley with a felt underneath but I would certainly want the protection of the galvanized flashings underneath that. The flashings add protection for these vulnerable points and the additional cost should be minimal.

What texdav was mentioning was a rubberized underlayment similar to GAF's Weatherwatch or Stormguard product. You can view some good installation videos of this product, and full roofing, at the GAF site:

GAF Materials Corp - Residential and Commercial Roofing (http://www.llbuildingproducts.com/../training/default.asp%3fWS=GAF%26Silo=ARCH%26App=INST%26Uid - broken link)

The GAF and other manufacturers' similar products are a little more but might fit your particular situation if called for. Speak with your roofer about it if you are interested.

[ferretkona]

Originally Posted by cgar22

,,,,Is this OK or something that I should insist on the aluminum?,,

It only costs a few dollars compared to the roof, go with galvanized flashings.

[MikeJaquish]

Either way works.
It is all about proper methods and proper installation of proper materials for the function.

[harry chickpea]

If the roof holds snow or creates ice dams, I would want metal underneath. The cost of a roll of flashing is minimal, and the shingles can be either woven over it or cut to angle.