Whether or not to go in for a roof replacement is a tough decision, but there are many indicators that will tell you if a replacement is required. The normal life span of a roof is around 15 years depending on the maintenance of the roof. Most roofs are reported to have leaks and torn flashing after this amount of time. Often there are missing or torn shingles which can be repaired. However it is best to replace a roof if the number of missing tiles and shingles is very high.
The condition of the interior walls touching the roof is also important. Moisture marks on the walls and paint loss are clear indicators that the roof needs major repairs. In areas with extreme weather conditions like repeated and prolonged snow, hail and rains can expose parts of the house from the top. Often a situation like this is beyond getting a minor patch up and calls for an entire roof replacement. There are also other external factors that can lead to the need of a roof replacement, such as a faulty design.
Improper building materials may have been used when constructing your home which can cause a situation where you must replace the entire roof. Many factor come into consideration when going for a roof replacement, but the decision must be a deliberate one. These will include but aren't limited to your budget, time at hand, requirement of alternative living space, and weather conditions in your area. Once you have come to a decision it is best to avoid delaying as the roof conditions may worsen and harm other parts of your home, therefor causing more loss. Experienced roofers advise making a proper contract and insure that proper insurance cover is present. Following these steps will help you to make sure the roof over your head is a good one that lasts.