Your pest guy walking the perimeter of the house spraying is not likely to enjoy having shingles dropped on him.  

We kept it all wood siding on the inside and the outside was covered with asbestos fake brick shingles and vertical sheet wood siding over that.

How to make sure he will install type of shingle he mention in repor?

And shingle warranties aren't worth the paper they are written on, so I would not care about the warranty. 

So you have to gauge if it's worth it.Depending on the damage, the repairs could run$300-400 (scuffed shingles and all), or maybe $2-3K if there are severely broken rafters and a big hole in the house!

I have a 1200 sqft rental property in Phoenix that I want to have the shingles replaced. 

Hi AllI need some guidance:I have a quote from general contractor and Roof licensed contractor(and preferred contractor for one of the shingle manufacturing company).

I need to replace my shingle roof--it's on the 13 year of a 12 year life.What questions should I ask roofers regarding their estimates?

If you get a price for a new roof , and when the contractor is done , you find out he used 20 year shingles , when you assumed you were getting 30 year shingles .

You don't want to put your shingle out only to find that suddenly the numbers don't work or your target market can't move in because of something that you over looked.