I get where you’re coming from, but I’ve actually had better luck with those membranes—at least as a stopgap.
For me, the trick was making sure the surface was bone dry and using extra adhesive at the seams. Held up for a whole winter in North Carolina before I could do a proper repair. Not saying it’s a permanent fix, but sometimes you just need to buy yourself a few months.“Maybe it buys you a little time, but I wouldn’t count on it for long-term exposure.”
“Held up for a whole winter in North Carolina before I could do a proper repair. Not saying it’s a permanent fix, but sometimes you just need to buy yourself a few months.”
That’s actually better luck than I had with membranes. Maybe my roof just holds a grudge, but the last time I tried that trick (self-adhesive peel-and-stick, seams taped like a Christmas present), it survived exactly three weeks before the first big rain found its way in. Granted, this was in Maryland, and the pitch is pretty low—plus, we had one of those sideways rain storms that seem to exist just to test your DIY skills. I will say, though, I probably didn’t get the surface as dry as you did. Trying to beat the clouds with a hair dryer is not what I’d call “best practices,” but desperate times...
I do agree that for short-term, membranes can be a lifesaver, especially if you’re waiting on a contractor or just can’t swing the full repair right away. But man, once water gets under there, it’s like it’s got a map of every weak spot in your house. I ended up with a ceiling stain that looked suspiciously like a Rorschach test—my wife said it was a bunny, but I’m pretty sure it was just my pride melting.
If you’re in a milder climate, maybe you get away with it for a season or two. Up north, or anywhere with freeze/thaw cycles, I’d be nervous about pushing it much longer. Once the wood starts swelling and shrinking, all bets are off.
Honestly, my biggest regret was not using a little flashing tape at the edges. That stuff is like duct tape’s overachieving cousin. Maybe that would’ve bought me more time (or at least a less embarrassing stain).
Anyway, I guess the moral is: membranes can work in a pinch, but don’t trust them to keep your attic dry forever. Or your ego intact, for that matter...
That sideways rain is no joke—had a similar mess here in Vermont last fall. I tried patching with a “green” membrane (supposed to be more eco-friendly, less off-gassing), but honestly, it only bought me about a month before the leaks found their way back in. I hear you on the flashing tape; I skipped it once and paid for it with a weird stain that looked like a sad potato. If you ever go the membrane route again, there are some plant-based options now that seem to hold up better, especially if you’re just trying to bridge the gap till real repairs. Still, nothing beats getting the whole thing fixed before winter sets in...
That sad potato stain made me laugh, but I know exactly what you mean—those leaks always find the weirdest paths. I’ve tried a bunch of temporary fixes over the years, including some of those “eco” membranes, and honestly, they’re just band-aids if the decking’s already shot or the flashing’s not right. Curious if anyone’s had luck with those newer self-adhesive tapes? I keep seeing them advertised as a quick fix, but I’m skeptical they’d hold up through a full season, especially with ice dams.
I actually tried one of those self-adhesive tapes last fall when I noticed a drip right above the bathroom. It stuck pretty well at first, but by February, once we had a couple freeze-thaw cycles, it started peeling up at the edges. Maybe it’s better in milder climates, but here (Minnesota) with snow and ice dams, it just didn’t hold up. Honestly, I feel like unless you fix the underlying issue—bad flashing or rotted wood—it’s just delaying the inevitable. Still, I get the appeal for a quick patch if you’re in a pinch...
