Has anyone used GAF Timberline HD Shingles? Should I go with Timberline HD or Timberline Ultra HD?
I live in NY, have a full sun roof, but can get alot of snow. We are replacing after an Iko "Organic" shingle failed and want to make sure we get the right shingle... also has anyone used Green shingle?
http://www.networx.com/article/do-you-need-a...
That is a function of proper installation.