The Best Gutter Sealant Options of 2023

General-purpose products are often capable, but specialist alternatives invariably provide a better solution. GE5050, for example, is formulated particularly for metals. It is a silicone-based sealant that can be applied with great accuracy and economy using a caulking gun. It flows easily into gaps, seams, and cracks, and the initial drying time is very rapid. It is waterproof in around 30 minutes, though a full cure takes 24 hours.

The silicone component keeps the sealant flexible so it will not shrink or crack, and it’s permanently waterproof. It has high UV resistance and can withstand temperatures from -60 degrees Fahrenheit to a staggering 400 degrees Fahrenheit.

Although odor-free once cured, it gives off an unpleasant vapor during the application, so a breathing mask should be worn during use. It can also irritate the skin, so gloves and eye protection are equally important.

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Get the GE gutter sealant on Amazon and at Walmart.