Most experts agree that a typical roof will last between 20 and 25 years. It also depends on whether the old roof was removed and you only have one layer of shingles, and if it is properly ventilated.

Here are some questions you can ask before considering a home cleaning service: How do you set your rates? Are you insured and bonded? Do you carry worker's compensation? Do you conduct background checks on employees? Do you have a satisfaction guarantee? Do you bring equipment and cleaning supplies? Can I get all this in writing?

Tile and Asphalt are the most used materials for roofing, and they're manufactured with the usage of concrete, clay or oil. The rise of oil prices can directly impacted asphalt shingles to become more costly. Furthermore, the cost of disposing old and damaged materials has also increased in the recent years.