Question: Tell us about your experience in accounts payable. Answer: Accounts Payable is mainly concerned with effective management of creditors. Effective management of creditors calls for correct booking of invoice under right accounting heads and making timely payments so that maximum available credit limit and discount is taken.
That's somewhat optimistic, according to the Metal Roofing Alliance, which says a metal roof lasts 40 to 60 years while the average life span of an asphalt roof is 12 to 20 years.. Your shingles might defy predictions one way or the other.
Determine the pitch of the roof. The pitch is how steep the roof is. Pitch is calculated by the roof's rise over its run. Measure from the edge of the roof over 12 inches (12 is the run) and see how many inches up the roof line is (this is the rise). Get a slope multiplier from the chart below.