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Undercoating & Bed Liner

Is Flex Seal the Best? Let's find out!

Dec 2018/11 min/2 products tested

Watch the test ↗

The verdict

  1. 1

    Flex Seal

    “It definitely seems to be the best allaround.”
    Buy on Amazon ↗

Other picks

  • Also noted

    Rustoleum

    “In applications where you don't need a lot of flexibility, but you need a lot of strength, as we saw in the PVC and the air tank testing, Rustoleum is going to be a better product.”
    Buy ↗

Everything tested 2

Links go to Todd's own Amazon listings with his affiliate tag intact — this site adds nothing and takes nothing.