The Risks of Replacing Individual Shingles on an Aging Roof
One wind damaged tab needing to be replaced
In the home improvement and roof maintenance world, the debate between replacing individual shingles on an old roof versus opting for a full roof replacement often leaves homeowners in a quandary. While insurance companies may advocate for the former as a cost-effective solution, experienced roofing contractors typically advise against it. The core issue revolves around the condition of the shingles on an aging roof, which become brittle and susceptible to further damage during the replacement process.
The Brittleness of Old Shingles
Asphalt shingles, the most commonly used roofing material, are designed to withstand the elements for decades. However, exposure to sun, wind, rain, and fluctuating temperatures gradually degrades the asphalt, causing it to lose its flexibility and resilience. This aging process leads to brittleness, making the shingles more prone to cracking and breaking. When a contractor attempts to replace individual shingles on such a roof, removing a damaged shingle and manipulating the surrounding ones to fit a replacement piece can easily cause additional cracks and breaks, not just in the shingles being directly handled but also in those nearby.
The Challenge of Matching Shingles
Another issue with replacing individual shingles on an old roof is the difficulty in finding new shingles that match the existing ones in color, style, and wear. Over time, shingle designs and colors are discontinued, and the existing shingles on a roof will have faded or changed color due to exposure to the elements. This can result in a patchwork appearance that may detract from the home's aesthetic appeal and potentially affect its resale value.
The Insurance Company's Perspective
Insurance companies often suggest replacing individual shingles as a way to minimize claim costs. Their approach is based on a technical assessment of damage that views shingles as individual units rather than considering the roof as a whole system. While this might seem cost-effective in the short term, it overlooks the long-term health of the roof and the potential for future leaks and damage caused by the compromised integrity of the aging shingles.
Through the process of removing one damaged shingle, five surrounding shingles were damaged.
Why Roofing Contractors Recommend Full Replacements
Roofing contractors advocate for full replacements on older roofs for several reasons. First, a full replacement ensures that all the roofing materials are new, matching, and installed with the latest techniques, providing a uniform defense against the elements. Second, it allows for inspecting and repairing the roof deck and underlayment, which are critical to the roof's overall performance but often overlooked in partial repairs. Lastly, a full roof replacement comes with new warranties, offering homeowners peace of mind that they will be protected from future roofing issues.
While the initial cost of replacing individual shingles may seem attractive, especially when suggested by insurance companies, the potential for causing further damage to an old, brittle roof cannot be ignored. With their on-the-ground experience and understanding of roofing materials' lifecycle, roofing contractors argue for a comprehensive approach to roof maintenance. A full roof replacement not only addresses the immediate concerns of leaks and damage but also enhances the overall value and integrity of the home, ensuring it remains a safe and secure shelter for years to come.
