A building's roof has two main purposes. The foremost is to provide shelter from environmental elements just like the sun. Secondly, a roof also provides insulation from hot and cold weather.Roofs generally last for many years. However, there may come a period when it becomes necessary to correct and replace roof shingles on your own home due to damage from harsh climate, earthquakes, falling tree limbs or leaks.  roofing companies  El Dorado Hills  can also speed up deterioration.Sometimes roofs are replaced simply to improve appearance or increase the property's value.How can you tell if your roof needs replacing? If you're worried about the condition of your roof, the ultimate way to troubleshoot any potential problems is to request an inspection from the roof replacement expert. A specialist roofing company will look for missing shingles, loose roofing material, sags, signs of water damage and mold and places where light is shining through the roof.If the damage is severe and your roof cannot be repaired, it'll need to be replaced.When replacing a roof, nowadays there are a large number of roofing materials available, both natural and commercially made. A fresh energy efficient roof may also save you quite a bit of money over time.Shingle is a general term for most different types of roofing materials that overlap one another when installed on the roof, including asphalt, slate, tile and wood.Asphalt shingles are less expensive that slate or tile, and typically the most popular kind of shingle. For a specialist, roof shingle installation is rather easy and the shingles themselves are believed quite resilient.The shingles are usually made of both fiberglass and asphalt, and covered with grit. The life span expectancy of asphalt shingles often varies based on their construction, although most asphalt shingles could have a 20 or 30 year warranty.When reroofing a house with asphalt, it is possible to either take away the old shingles or place the brand new shingles along with the existing layer. A very important factor you have to be careful of when doubling through to roof shingles may be the increase in weight. If your roof becomes overweight, it could damage the frame. It's also advisable to understand that any roof irregularities will be repeated if new tiles are simply just placed on the surface of the old ones.If you want the old shingles removed, consider hiring a professional roofing company to accomplish the work. A roofing expert will know how to quickly remove the existing shingles.Slate is an extremely durable roofing material, with a life span that exceeds 400 years. Ceramic tile may also have an extended life - sometimes up to 100 years. Wood shingles, usually made of cedar, can last up to 30 years.Reroofing a house may also be done with asphalt rolls, thermoplastics, polyester, fabric and metal.In some cases, the structure of your home will narrow your list of choices. Foundation repair specialists that are experienced at roofing may help you avoid common reroofing mistakes which could find yourself costing you plenty of dollars.Having your roof inspected frequently increase its longevity, particularly when any issues are quickly addressed.