- Pretty much agree—sealant’s never been more than a stopgap for me, especially up here where we get that constant freeze-thaw.
- Even with the best prep, I’ve noticed the edges start to peel or crack by spring.
- Had a spot I patched last November—looked fine until March, then it was back to square one.
- Only thing that’s lasted longer was a full shingle replacement, but that’s obviously more work (and cost).
- Maybe newer products are better, but so far, nothing’s really stood up to our winters for more than a season or two.
Even with the best prep, I’ve noticed the edges start to peel or crack by spring.
Same here—tried a couple different brands last fall, followed all the instructions, but by April the sealant was flaking off. Our roof’s got a pretty steep pitch and faces north, so it gets hammered by wind and ice. Only thing that’s held up for me is replacing the damaged shingles outright, but yeah, it’s a lot more work (and not cheap). Sealant just seems like a temporary fix in this climate.
Sealant just seems like a temporary fix in this climate.
That’s pretty much been my experience, too. On steep, north-facing roofs, sealant rarely lasts more than a season—wind and freeze/thaw cycles just chew it up. Have you tried using a high-flexibility sealant or even a cold-weather formula? Sometimes those buy a bit more time, but honestly, nothing beats swapping out the bad shingles. It’s a pain, but at least it holds up.