I’ve posted this valley before with mixed opinions on whether it was done correctly. To be more specific, does this valley appear to meet Tamkos specifications? I would be interested to hear from an authorized Tamko roofer?
Unfortunately, the roofer rep is reluctant to give me an answer and Tamko’s Tech. Dept. will not respond to my inquiry.
I have 10 year labor and 30 year shingles. Granted that 30 year shingles will probably last less than that. But lets say in the 11th year the shingles start curling up in the valley and develops leaks. Something of which is not uncommon and my previous shingles did just that (IKO). At that point my 10 year labor has expired. I go to Tamko since I have 30 year shingles. A Tamko representative comes out and says it is not the fault of the shingles, but rather the installation. At that point the warranty is useless.
So what I would like is to have Tamko give me is the thumbs up now rather than waiting until it is too late. I view this as a loophole in the warranty and requires the consumer to purchase a new roof sooner than expected.
As for GAF, their customer service was willing to tell me it was not done to their specifications.