The Debate Over Adding Shingles Over Shingles: A Closer Look

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As homeowners, we often find ourselves facing decisions about home maintenance and improvement projects. One such decision that has sparked debate is whether it’s wise to install new shingles over existing ones. Some argue for its convenience and cost-effectiveness, while others raise concerns about potential drawbacks. In this blog, we’ll delve into this topic, examining the implications and considerations involved in adding shingles over shingles.

Structural Integrity and Weight Distribution

Adding new shingles over existing ones can raise questions about the structural integrity of the roof. The additional layer of shingles adds weight to the roof, which may exceed its design capacity. Over time, this excess weight could lead to sagging or even structural failure. Furthermore, the uneven surface created by layering shingles can impede proper water drainage, increasing the risk of leaks and water damage.

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Warranty and Insurance Implications

Many roofing manufacturers and insurance companies have specific guidelines regarding the installation of new shingles. In some cases, adding shingles over existing ones may void the warranty on the new shingles or affect coverage under homeowner’s insurance policies. This is because layering shingles can compromise the performance of the new roof, making it more susceptible to damage and reducing its lifespan. Homeowners should carefully review their warranty and insurance policies before proceeding with this method of re-roofing.

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Long-Term Cost Considerations

While adding shingles over shingles may seem like a cost-effective solution in the short term, it’s essential to consider the long-term implications. As mentioned earlier, layering shingles can reduce the lifespan of the roof and lead to costly repairs down the line. Additionally, the need for a complete tear-off when the roof eventually needs replacement can incur significant expenses. Investing in proper roof maintenance and quality installation from the outset may ultimately save homeowners money in the long run.

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In conclusion, the decision to add shingles over shingles is not one to be taken lightly. While it may offer convenience and cost savings upfront, it comes with potential risks and drawbacks that could outweigh these benefits in the long run. Homeowners should carefully weigh the structural, warranty, insurance, and cost implications before proceeding with this method of re-roofing. Ultimately, consulting with a qualified roofing professional like Avalon Roofing and adhering to industry best practices will help ensure a safe and durable roof for years to come.

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Avalon Roofing & Exteriors

(616) 261-9927

5017 Division Ave S, Grand Rapids, MI 49548