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Key Takeaways

Best Overall

Best Bang for the Buck

Best for Leaks

Best for RV Roofs

Best for Flat Roofs

Best for Metal Roofs

Best for Flashing

How We Tested the Best Roof Sealants

What to Consider When Choosing a Roof Sealant

FAQs

Meet the Tester

Roofs are designed to withstand an impressive onslaught of extreme weather, but daily exposure to sun, rain, hail, or snow can eventually cause even the toughest roofs to degrade. The small leaks and weakened sections that form can let in moisture that may result in the need for expensive repairs or even a new roof .

By filling in little gaps and damaged sections with a sealant, DIYers can make protecting and repairing a roof an easier and more affordable task. While some products are meant for small and isolated leaks, others are designed to create a virtually impenetrable barrier over the entire roof.…