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.
Judging a Roof's Life Span Before It's Too Late. It's difficult for any building material to withstand year-round extremes of heat and cold, snow, ice and blistering sunlight. But asphalt-based shingles, the roofing used on four out of five new houses, can take the abuse for 15 years or more. Roofing life spans vary depending on the weight of the shingle, the pitch of the roof, building location, maintenance and other factors, including which trade association you consult. Your shingles might defy predictions one way or the other.