If it's time to replace the roof on your Atlanta area home, you may wonder, "Can you repair a roof with two layers of shingles?" In other words, instead of having a roofing contractor remove the existing roofing shingles and install new ones, they would add a second layer of shingles over them.
Although this method may seem like a good way to reduce roof repair expenses, the experts from Douglas Construction, Atlanta's reliable roof repair specialists, caution homeowners against doing so. Here, they explain the risks of this type of roof repair and why replacing the entire roof is a better solution.
Roofing professionals may install a second layer of shingles to save time and money on roof repairs. However, this approach only delays the inevitable roof replacement. Building codes prohibit roofing contractors from repairing an existing double-layered roof, so the only option is replacement when the repaired roof has problems.
So while the answer to "Can you repair a roof with two layers of shingles?" is technically yes, a reputable roofing contractor will refuse. Some of the many hassles and issues that can arise from a double-layer roof include the following.
If you have a leaky roof, covering the shingles with more of them will not address the source of the problem. Eventually, water will find its way under the new shingles, worsening the issue. Any damage from the original leak will only get worse as well, increasing the risk of mold, rot, and structural damage.
An additional layer of shingles is heavy and can cause structural damage, especially if the roof trusses or joists are already weak from water damage.
Attic insulation works best with a single layer of shingles. The extra layer disrupts their function, essentially trapping more heat in the attic. This can mean higher utility bills to keep your home cool during a sweltering Atlanta summer.
Insurance companies typically view damage from a two-layer roof as negligence and poor maintenance and thus refuse to pay those claims. You could face unexpected out-of-pocket costs after a storm when this happens.
Installing new shingles over old ones could void their warranty, leaving you to cover the cost of repairs or replacement due to defects.
A two-layer roof tells home appraisers that it has problems. It may also indicate neglected maintenance in other parts of the house. This can reduce home value by as much as 15%.
Now that you know the answer to "Can you repair a roof with two layers of shingles?" choose a local roofing professional to perform roof repairs and recommend the best roof coating for shingles. When you do, you can rest easy knowing you have a strong, reliable roof for years to come. Get in touch with the Atlanta-based team of Douglas Construction for an expert inspection and high-quality roof repairs and replacements.