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.
There are many reasons that a roof can age prematurely, as I've seen them worn out in as little as 12 to 14 years. I do agree a good roof should last anywhere from 20 to 30 years, or possibly longer with the new lifetime shingles. The biggest factor is proper ventilation, and just because you have adequate ventilation at the peak, gables, or towards the top of your roof, does that mean you have the proper airflow through your attic or crawlspace area.