I cannot believe I am saying this but I have to be honest.
We are on our 5th house of the 6 that we are sponsoring for Springfield Habitat's Six By Six build off.
Up until today all we have installed is Owens Corning.I pulled up to the 5th house only to be faced with an installation of nothing other than IKO !!!
It has been several years since I have installed them.First thing I noticed was the thickness of the shingle.It appeared to be more sturdy than I once remembered.
The problems I noticed with the previous installations was a huge difference with exposure height and differnet lengths of shingles.I remember it was in excess of almost an inch either way.
I had no reoccurence of this with the shingles I installed today.17sq.and shingle for shingle no problems.One thing that annoyed me were the factor markings from the rollers during manufacturing.
I will install them if someone by chance is providing material but that isn't happening soon.Overall it was a decent installation considering the problems I had in the past when installing them with manufacturing goof ups.