I am doing reroof in Central TX. (San Antonio). I have decided on Landmark TL Ultimate shingle and have gotten several bids. I have learned alot from reading the postings here and appreciate that you are willing to take the time to educate homeowners. It is especially helpful to have a regular posting from a roofer in Central Texas.
The bid from the local roofing company I feel most comfortable with indicates ridge vent on the main ridge. However, my roof (and attic) is very broken up with several elevation changes between horizontal ridges. Should I insist on ridge vent on all horizontal ridges? I know that I will specify that roll ridge vent not be used, but what is the difference between CobraII and CobraIII? Is one of them 5/8" and the other 1"?
In Central Texas, where should Ice/Water Shield be installed (in addition to the valleys). Around chimney, eaves, rakes, pipe penetrations, ridges? How high up/in from eaves/rakes? Should 30# felt be installed over the Water Shield?
The bid also indicates chimney flashing is to be installed and specifies tin shingle. Is this the best material? I am taking off concrete tile roof.