Age of Roof
When buying a home, you always want to ask the homeowner or realtor how old the current roofing system is. A roof can last up to 50 years if installed and maintained correctly. The older the roofing system is, the more likely you will need to invest in repairing or replacing it sooner. You want to look for cracked or missing tiles and shingles, any signs of bulging or curling edges and you want to make sure that there is no water spots on the inside or outside of the home.
Good Ventilation System
A good ventilation system will let in sunlight and air, which is very important for a roof. . Ventilation essentially helps outside air pass through and out of your attic, removing excess heat and moisture from the air of your attic as it does so. Insulation prevents extreme fluctuations in temperature that you end up feeling deep in your wallet. It helps limit the cost of your energy bill each month, as you’re not spending more to maintain a level temperature because of too much exhaust or escaping air. A bad ventilation system will result in mold and/or warped roofs. Excess heat and moisture cause roof decking to dry-rot and shorten the life of shingles and underlayment. Cracked shingles or premature granule loss can be signs of improper roof ventilation.
All types of roofs, whether they are sloping or flat, have some sort of drainage system. Sloped roofs have the advantage where water can run off its slope and into gutters along the sides of the roof. Flat roofs require a different kind of drainage system, but both will suffer without a drain. Make sure to investigate the drainage pipes that run along the roof for any damage. Having a clogged or damaged drainage system will cause water spots on roofs and potential leaks in the future. Different drainage problems, including puddling, pooling, saturated soil, and even undirected downspout water, can destroy landscaping and turn a backyard into a swamp. It creates moisture and mold problems and can damage home foundations; drainage is a serious concern when there is a problem.
Mold on Rooftop
Not only does mold carry a bad odor, mold is also known to cause or contribute to numerous health problems, some of them quite serious. It can also cause significant damage to your roof and to other parts of your home, as well. Mold is easy to spot due to its rancid smell and slimy, unattractive appearance, which is characterized by black, brown and dark-green blotches. As with other damaging growths, mold is the result of moisture deposits. Mold is most likely to develop on wood and drywall surfaces where water has been absorbed. The moisture and bacteria from mold can also lead to further damage of your roof’s shingles. If a small spot of mold isn’t discovered for many months, the spot can start to grow and impact even more parts of your roof.