Vid, jus do yourself a BIG favor before hand. Photograph EVERYTHING.. before and after. Sometimes, even tho these guys cut you a good deal, they\'ll end up f*cking you anyway they can. A few years back we had this guy name Mike Eggloff come out to put a roof on our house. Cost about 4 G\'s all together, but he wasn\'t just tearing shingles off either.
Anyhow, the extension ladders they used to get on the room didn\'t have eve guards, so our guttering got all torn to shyt in like 6 different areas. He offered to replace it, but it would cost extra. (A LOT extra, it turns out). They also managed to break off a stink pipe (It\'s an old house) which they wouldn\'t replace, and actually thought they could get away with sticking a cheap piece of tin foil around the Chimney for flashing (or whatever it is that keeps water from running down the outside of the chimney into the house). After alot of bad noise, we did finally get him to replace the flashing and do the job right although he thought since he had to do it twice that he should get paid twice. There was alot of other things too.. there\'s huge cracks in the plaster at alot of places in the house because they\'d litterally just throw 50 - 100 lb bricks of shingles around carelessly. In a newer house, that wouldn\'t be a problem.. but my house is over 100 years old and it\'s foundation is pretty well past it\'s prime.
Anyhow, I\'m sure you already know, don\'t pay them nothing upfront except what they need for materials. That way, if they damage your house you\'ve still got some bargaining chips.. well.. as long as you remember to document everything so you can use it in court if you have to.