Why a Full Tear-Off is Essential for Your Roof Replacement

Roof maintenance is shown with someone on the roof doing work

When it’s time to replace your residential shingle roof, you might consider saving money by installing new shingles over the existing layer. While building codes generally allow for up to two layers of shingles, Centennial Roofing strongly advises against this approach. A full tear-off is essential for ensuring the longevity and integrity of your new roof.

One of the primary reasons for a complete tear-off is to inspect the decking underneath. If you simply roof over the existing shingles, you won’t be able to see the condition of the deck. There could be hidden issues such as rotten or damaged decking, which, if left unaddressed, can lead to significant problems down the road. Roofing over a compromised deck can result in leaks, structural damage, and costly repairs.

Additionally, older roofs might have spaced decking that doesn’t meet current building codes. This type of decking isn’t compatible with modern roofing materials and standards. Without removing the old layers, you could be setting up your new roof for failure due to inadequate support and improper installation.

Another critical factor is the condition of the decking after multiple roofs have been installed. Over time, too many nail holes can weaken the decking, compromising its ability to hold new shingles securely. In such cases, the deck itself might need to be replaced to ensure a solid foundation for your new roof.

By opting for a full tear-off, you ensure that any underlying issues are addressed, providing a stable, durable base for your new roof. Trust Centennial Roofing to perform a thorough and professional roof replacement, safeguarding your home against future problems.

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