Last June, when I moved into my house, the first thing I did was have the roof of my house replaced. There were two layers of shingles removed (3000 sq ft roof) and some CDX boards replaced.

A lot of the shingles near the gutters droop down a little (an inch) and I was trying to figure out if maybe they were a little too long and could be trimmed a little. Then I realize there isn't one piece of drip edge on the roof. I am kind of disgusted about this to the point where I want to go back to the guy and demand some money back because obviously those shingles bent down will break long before 20 years. The don't look awful, but I don't see that anyone else's roof is like this either.

Now that they have heated and cooled for almost a year, it probably isn't possible to install drip edge after the fact.

Is there any reason why someone would not drip edge a roof? This guy wasn't the lowest price and came highly recommended by many people in the neighborhood. I really feel like I was not given what I paid for.

Was it in the contract? I agree a proper job would also include a membrain on the lower portion in case of Ice dams. Assuming you are in a area that sees snow.

But if its not in the contract... they commonly don't do it to cut corners.

Ice Shield was in the contract. I thought it was something special. I guess I didn't catch it because my 4 other estimates mentioned drip edge. If it cost more, I would have appreciated him mentioning it.

I know what you mean. What happens is if they do it right... then they come in at a higher bid, and all too many people look at price, not what's actually being done.

I am only guessing... but he likely didn't mention it because few others do, and if he mentioned it, makes it appear to some people like he is trying to pad the bid. Because most people would not realize others would shortcut and not say a word. How many people get up on their roofs to look, or even know to ask after all. Being this is something that only gets done every 20-30 years on average.

Did you get the ice shield? This is a layer of self-adhesive heave tar paper like material installed the first few feet around the edge.

Shingle overhang, I think is 3/8 to 5/8. I'd have to check my notes.

A pain to put on after the fact.

The ice shied is in the contract. I assume it is there.

Obviously I would have negotiated the drip edge into the price. But I realize a lot of contractors want to do the job before the homeowner changes their mind. Well, he lost out on the windows because of this.

Assuming there is a way to slide drip edging in, how do you shorten the shingle? Are they just cut with scissors? The shingles overhang about an inch.

Here is the info on the drip edge. Asphalt Shingle Installation Tips (http://www.askthebuilder.com/B148_Asphalt_Shingle_Installation_Tips_.shtml)

Should extend 1/4 to 3/8 of an inch.

Ice & water installed 2' back from exterior wall.

Shingles are usually cut with a utility knife from the back side.
I'd be worried about the quality of the cut edge. Might be simpler to move the singles. Difficult, but not impossible. You have to remove and patch holes and re-install. Nailing is tough. Nail + board + overlapping shingle + board + hammer works.

So remember, drip edge under ice dam at front, over paper on sides.

Not all drip edges are created equal. Some may interfere with the existing gutter. They will automatically add some length to the roof.