Toledo Roofers: Article About Asphalt Shingles
Asphalt shingles may develop a variety of anomalies on their surfaces. Some of these are production defects that have no bearing on the durability or functionality of the roofing materials while other defects, such as blistering, can have considerable consequences on the lifespan of the roof. Whether blistered shingles are identified by the homeowner or by Toledo roofers, it is important to know what caused the situation and what needs to be done about it.
The most common cause of blistered asphalt shingles is the placement of the shingles onto wet decking. When the roof's deck is wet, the moisture is able to penetrate into the shingles. Heat from the attic space as well as the outdoors causes the moisture to create a bubble on the shingle's surface. The blisters will be located along all of the roof's faces.
Another frequent cause of blistering on roof shingles is poor ventilation. When the attic area of a house is poorly ventilated, the shingles are exposed to intense heat. This excessive heat may cause blisters to form uniformly on the surface of the shingles.
Moisture left within the shingles during the production process may also result in blisters. These blisters will not be as numerous or evenly distributed as the blisters that result from heat exposure or wet decking.
The roofing experts from Johnson Construction of Toledo would be happy to answer any questions you have about siding or commercial roofing.
Depending on the color and style of asphalt shingles, the blisters can be difficult to detect. In many cases, the homeowner may not even realize that there are any blisters at all. These small defects may only become evident after the roof has been inspected by a trained and experienced professional walking across the roof or looking at it through a pair of binoculars.
Rooftop blisters can eventually pop after some time. When one of these blisters pops, the shingle loses some of its asphalt granules. As each additional blister on the roof pops, more and more of the granules are lost. Bare spots on shingles are prone to additional degradation from the sun's ultraviolet rays and from wind. Over time, these bare spots may crack open, allowing water to penetrate into the roof and causing a leak within the house.
When a property owner knows that there are blistered shingles, a few preventive maintenance tips can help avoid further damage. No one should walk upon a blistered roof. Any tree branches within 6 feet of the roof should be pruned. Homeowners can also replace blistered shingles.