This summer we are getting our house re-roofed. I live in Minnesota. What type of things do I need to ask of our roofer, what type of things do I need to have asked to have done. The roof I have now is 4 years past its prime on a 19 year old house with original asphalt shingles. I know there is one spot I need the underlayment replaced, I will asked if they know why that one spot went bad. I noticed it when we had to crawl up in the attic to replace a bathroom vent fan and new insulated vent pipe, I think the moisture possibly was leaking out of the fan, but it is one very localized spot about 12" across that is dampish and discolored. There are 4 vents about 1 1/2' across on the south side. I have seen some houses have those removed and a ridge vent put in instead, is that more efficient? What about drip edges and such, what should they be made of, what, where and how should ice barriers be placed and what should I ask for on that. I will be having old shingles torn off, they are quite bad and crumbling.

Any insight one what kind of questions and requests I should make. I am going to get 3 estimates before I make a decision...If anyone of those guys give me that hard sell they will be kicked out!!! That happened to my parents a few years ago, they sent 2 salesmen and had to sign up today to get "special" price..They canceled it and went with who neighbor recommended and it was almost $2,000 less than those high pressure guys.