I need to reroof my 37-year old house in the Blue Ridge mountains. Wind can be pretty fierce at times so I need something that will hold up and last. I was looking at the Certainteed Landmark 50 (293 lbs/square) as this tested fairly well in Consumer Reports in 2003 and Certainteed seems to have as good a reputation as anyone. Does anyone have any experience with this shingle? If I can't get this shingle, are there others that are comparable in performance? I'm under no illusion that a 50-year shingle will last 50 years, but if I can get 40 years I figure it'll be worth the difference in the total contract price from a 30-year shingle.
I was planning to have the roofer use 6 nails/shingle--any drawbacks to the integrity of the roof by using more nails than the standard?
Thanks.