Common Roofing Issues: Roof Material Deterioration
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What to Do About Roofing Material Deterioration
All materials deteriorate over time and roofing materials are no exception. In fact, because they are out in the elements getting pounded by rain and UV rays every day, roof damage from deterioration is pretty common, especially with older roofs.
Take a closer look at what causes roof materials to deteriorate and when it's time to call a roofing contractor about the issue.
Are materials on your roof deteriorating?
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What Causes a Roof to Deteriorate
The amount of deterioration you may see and when it starts to become a problem largely depends on the roofing material. Asphalt shingles are going to break down quicker than metal roofing and clay or cement tiles. It's simply a matter of the durability of the material and it's ability to maintain structural integrity.
Roof deterioration is inevitable, but there could be factors that are speeding up the process and reducing the lifespan of your roof.
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Moisture Buildup
The roof is going to get wet anytime it rains or snows. Even a heavy fog that sometimes happens in Austin can put moisture in the air. What you want to watch out for is moisture buildup that causes deterioration to accelerate.
One of the biggest issues is roof leaks that allow moisture to accumulate below the surface. It often leads to water damage that weakens and breaks down the roofing materials.
Water pooling on the surface from low spots, ice dams and clogged gutters can also cause damaging moisture buildup.
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UV Rays
Another major factor is the sun. UV rays can't be seen, but they are hitting the roof every day. UV rays cause chemical and physical changes that can be damaging. On the physical side, UV rays dry out materials and cause them to become more brittle. Chemically, UV rays affect molecules that work to protect the material from UV and water damage.
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High Winds
The wind can also be problematic for asphalt roofing shingles. Strong winds can cause the protective granules to come off asphalt shingle roofing, making the roof more susceptible to UV and water damage.
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Overhanging Trees
When tree limbs rub against the roof material they can scratch off the protective outer layer. Larger limbs can even scratch down deeper or cause dents in the roof surface.
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Age
The age of the roof is going to heavily impact deterioration. Over time materials get worn and weakened. Once the process begins there's no stopping the deterioration.
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Improper Roof Installation
There are a number of ways improper roof installation can lead to premature deterioration. If the roofing company uses the wrong fasteners it could cause a roof leak. Poor ventilation can lead to condensation that deteriorates materials. If the roofing contractor doesn't account for contraction and expansion, then roof shrinkage could be a problem, especially for flat roofs.


Correcting and Preventing Roof Deterioration Issues
There's no 100% way to prevent deterioration, but you can safeguard against the factors that make it worse. However, when it's past the point of prevention it's time for correction.
Will Roof Deterioration Require Repairs or Roof Replacement?
Correcting roof deterioration problems may not be as simple as replacing damaged shingles in a few spots. The roof repair may require replacing damaged materials as well as correcting underlying issues like inadequate roof vents or fixing damaged flashing. And if there are roof penetrations those have got to be addressed before bigger roof problems happen.
If the majority of the roof material is significantly deteriorated or structural damage has already started, then complete roof replacement will probably be your best bet.
Get a Professional Inspection to Know For Sure
You may be tempted to simply replace the affected roofing materials that are showing signs of roof damage, but that's going to leave the roof vulnerable to further damage. It's best to have the whole roofing system inspected by a professional so you can determine if deterioration is just a result of regular wear and tear or if there's a contributing factor making it worse.
Ways to Prevent Roof Deterioration Moving Forward
Use a Protective Coating on the Roof
You can't stop UV rays and solar heat, but you can apply a roof coating that protects against it. The protective coating helps roofing materials reflect more of the light and absorb less of the heat so that the materials aren't deteriorated as quickly.
However, roof coatings aren't appropriate for every type of roof material. It could even void the warranty of asphalt shingles. The better option in this case is to opt for a material that already has a protective coating if you're replacing the roof.
Make Sure the Roof is Properly Maintained
A well maintained roof is going to age better. Ongoing maintenance helps to ward off premature deterioration by helping you catch problems that are making it worse, such as a water leak or tree limbs that are scratching the roof.
When you need to deal with roof deterioration in Central Texas, give LOA a call at 512-375-3654. We offer free roof inspections and a wide array of roofing services that can address problems that are causing deterioration.

