Roof upkeep through the seasons - did you see this?

White elastomeric coatings are supposed to help with heat, but in my experience, they’re a bit of a mixed bag. I tried one on my workshop roof a few years back - helped cool things down, but after the first winter, I saw bubbles along the edges too. Here’s what I did: checked the seams for cracks and peeled back a tiny section. Turned out moisture had sneaked in from a nail hole I missed sealing. About the smell… yeah, sometimes it gets this rubbery odor when the sun’s really beating down. I wouldn’t say it’s dangerous, but it’s definitely noticeable if you’re working inside. I’m starting to think these coatings are only as good as the prep underneath, especially with older roofs.

I’ve had pretty much the same experience with elastomeric coatings. They definitely helped keep my garage cooler last summer, but the prep work is everything. I missed a few little cracks and it didn’t take long for water to sneak in and start lifting the coating around the edges. The smell’s not great either, especially on really hot days - gets kind of rubbery like you said. I think these coatings are a decent option, but only if you’re really thorough sealing up every seam and nail. On an older roof, that’s easier said than done...

I’ve actually had better luck with a high-quality acrylic roof coating, especially on older buildings. Elastomerics can be tricky if the substrate isn’t perfect, like you said. With acrylics, I found surface prep was still important but a little more forgiving - plus, the odor wasn’t nearly as strong in the heat. Not saying it’s a fix-all, but for some of my properties, it held up better through the winter freeze-thaw cycles. Just my two cents...

Interesting take. I’ve actually had the opposite experience with acrylics in freeze-thaw - noticed some cracking after a couple rough winters up north. Did you do multiple coats or just one? I’m still partial to elastomerics for flexibility, but maybe it’s just the climate here.

I’ve actually had the opposite experience with acrylics in freeze-thaw - noticed some cracking after a couple rough winters up north.

That’s interesting, because I’ve been debating between acrylic and elastomeric myself. I’m in the Midwest, so we get those wild temp swings too - one day it’s sunny, next week it’s sleeting sideways. I did a single coat of acrylic on my garage roof last fall (mostly because I was trying to stretch the budget), and honestly, I’ve already spotted a few hairline cracks after this winter. Could be user error, or maybe just not enough coats like you mentioned.

Elastomerics seem pricier up front, but if they hold up better long-term, maybe it evens out? I’m always torn between saving money now or paying more for something that might last longer. Still, good to hear someone else is seeing the same kind of issues with acrylics in colder climates - I was starting to think I just messed up the application somehow. Maybe it really is a climate thing... roofs are trickier than they look.