How to repair a leaking flat rubber roof using a new patch
In short: General contractor Tom Silva demonstrates the professional method for sealing a leak in a flat rubber roof. This guide covers the essential materials and preparation needed to install a durable, long-lasting patch that restores the integrity of the roofing surface.
Repairing a compromised rubber roof requires creating a stable foundation before applying the new membrane. The process begins by installing high-density fiberboard, which serves as a new substrate to support the repair area. Once the base is prepared, the surface must be treated with a rubber membrane cleaner to ensure proper adhesion.
The final seal is achieved using rubber-to-rubber contact cement, which bonds the new patch to the existing roof. This technique provides a reliable fix for leaks, ensuring the roof remains watertight and durable over time.
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Sources
- Summary by Intellect · source: How to Patch a Leaking Rubber Roof | This Old House
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