Water still found low spots and just sat there. Maybe if the roof had a bit more pitch it’d be different, but with barely any slope, it felt like fighting a losing battle.
That’s been my experience too. We tried adding extra drains on one of our older flat roofs, but the minimal slope meant water just pooled in new places. It helped a little, but didn’t solve the underlying drainage issue. Sometimes I wonder if re-pitching is the only real fix, though that’s not exactly budget-friendly...
- Completely relate to this:
.the minimal slope meant water just pooled in new places
- We’ve tried patching and adding drains too. Sometimes feels like playing whack-a-mole with puddles.
- Re-pitching is a big expense, yeah. But regular maintenance—clearing debris, checking for low spots—has helped us stretch things out.
- Not a perfect fix, but it buys time.
- Flat roofs are always a bit of a gamble, especially with heavy rain. Hang in there...sometimes it’s just about managing the risk.
I get the “whack-a-mole” feeling—every time I think I’ve solved one spot, another puddle shows up somewhere else. I’ve been wondering if anyone’s had luck with those tapered insulation systems? I’ve heard they can help with drainage on low-slope roofs, but not sure if it’s worth the cost or just another band-aid. For now, I’m just trying to stay on top of cleaning out the scuppers and watching for soft spots. Curious if anyone’s seen real long-term improvement from adding more drains, or if it just spreads the problem around.
Tapered insulation can actually make a difference if the ponding is from poor slope, but it’s not a magic bullet. I’ve seen it help on some older buildings where the deck had settled, but it’s pricey and only works if installed right. More drains can help, but you’re spot on—sometimes it just moves the water around unless you really plan out the flow. Keeping scuppers clear is huge, though... I’ve seen so many leaks just from clogged outlets. If you’re seeing soft spots, might be worth checking for trapped moisture under the membrane too.
Had a flat roof on my last place and honestly, the cost of tapered insulation was a dealbreaker for me. I tried to get by with just adding another drain and keeping the scuppers clear, but it only helped so much. Still ended up with some pooling during heavy storms. I agree about soft spots—found one by accident when I stepped in the wrong spot and almost went through. Ended up patching, but if there’s trapped water, it’s just a ticking time bomb. Sometimes it feels like you’re just throwing money at it and hoping for the best.