I've installed quite a few squares of elk timberlines and what I like about them is, that compared to a three tab shingle, the elks have a better adhesion strip at the leading edge of the shingle that keeps them down in high winds. They are also heavier than three tabs. I cant speak for owens corning architectuals. I dont think you can go by mfgr's claims concerning longevity, in this case 30 years, as it is dependent on location and the weather extremes. The main concern is that you have a reputable installer that will do a competent install concerning underlayments, flashings, as well as the shingles themselves and will warrant their install in writing coinciding with the mfgr's warranty on the shingles.

Both are comparable in quality and service. The differences in shingles are usually discussed among roofers who have brand loyalty. Brand loyalty stems from fringe benefits the mfgr offers..not the quality. Either one will do the job. Michael

This roofer did talk about his certifications (of various sorts) and he is a OC preferred contractor. When I told him that I was getting other much lower quotes, he said that the quotes really shouldn't be much lower than his because he considers himself very reasonable for the high quality of work. So that is consistent with your remarks. He said that his quote is for a 35yr roof... does that mean that the roof should last 35 yrs??? He has a 50yr roof as well for another $1,200. Thanks, Michael

It's our house in both photos with different weather! Cloudy days you see more of the green. With the wrong shingle we might see more green all the time! Thank you!