Mental disorders affect one in four people Treatment available but not being used Geneva, 4 Octoberâ One in four people in the world will be affected by mental or neurological disorders at some point in their lives.
First, roofers charge labor for removing your old roof. A one-story roof with a single shingle layer costs between $100 and $150 per square to remove; a double layer, $115 to $165; and triple layer, $125 to $175. If you have a particularly high roof or one that is extremely steep, you will pay more per square.
Roofing estimating unit cost for installation of standard 3-tab asphalt roof shingles (15 year or 20 year warranty). Unit Size. One square (one hundred square feet). Labor Costs. We figure a little more than 1 1/2 hours of skilled labor and 1/4 hour of unskilled labor to install one square of straight roofing.