Should I demand a new roof...?

[norminn]

You can determine yourself whether the shingles were installed properly, but I'm not saying that you should not have a pro look at it. Builder? Roofer? Here is a link to BP/Emco's instructions for one version of the Dakota shingle.

Darn instructions are very educational. All kinds of info about slope, number and type of nails, wind ratings, etc, etc. There are apparently "east" and "west" versions of Dakota shingles. I didn't delve into the differences. Just picking up the shingles that have come off will tell you a lot. "A dozen or more loose shingles flapping up and down"? If the shingles were deteriorating, you should see cracking or curling, probably. IF the shingles actually deteriorated, you should be able to see it. Inadequate ventilation can factor in to shingle failure. Don't let them blow smoke at ya'. I believe I saw mention of the company having a certification program for roofers - if they do, it would not be a bad idea to try to have a certified installer look at it.

The builder had problems with other homes? Sub hired some really bad day laborers and didn't supervise? Good luck! Nothing like a bad roof as a learning tool :o)

[olddog]

I just got my roof (1 story, 29 sqrs, 5/6 pitch, 30 year shingle) for $8k.

A metal roof costs $28k.

For most people a $28k roof is not an option.

od

[clare]

Staples are particularly useless on ASB or "aspenite" sheathing. That crap should be outlawed.

[clare]

Actually, if the plywood was bad and he did not replace it ( or at least tell you it needed replacing and you refused) he is liable for faulty workmanship. A professional roofer knows what will stand up and what won't. A crook doesn't care.

[clare]

So the self sealing tabs never fused to the shingle below. Common problem which can be solved with a can of roofing cement and a putty knife and a few hours of somebody on their knees. Roofing in the summer can be uncomfortably hot - I installed BLACK shingles on the farmhouse where I worked as a teanager in AUGUST. It was about 90F in the shade and 150 on the roof. No problem with tab sealing or shingle cracking!!!!

[cshenk]

Thats a bit area dependant. You seem to be in Ontario? Down here a reposonsible roofer will take care of that too, but isnt liable.