Roofing discussions and local services.

Flat roofs and heavy rain: is it a disaster waiting to happen?

285 replies 10.9 K views
 
richards48
13 posts

Skipping guards and just doing regular cleanouts can work, but it really depends on your roof’s setup and how much debris you get. On some flat roofs, especially with a lot of nearby trees, you might find yourself up there every time it rains hard. I’ve seen folks go without guards and end up with standing water because a single leaf clogged the drain. Dome strainers are a bit better at letting water through, but they still need checking. Honestly, there’s no perfect system - just trade-offs between maintenance hassle and risk of blockage. If you’re not keen on frequent trips up the ladder, some kind of guard is usually worth it, even if it’s not perfect.


Reply
cherylfox294
6 posts

Had a flat roof on my old place, surrounded by maples. I skipped guards for a while, thinking I’d just clean the drains after storms. That lasted until a surprise downpour - came home to water pooling and a minor leak in the ceiling. Ended up installing dome strainers, which helped, but I still had to check them every couple weeks in the fall. Honestly, it’s just less stressful knowing there’s at least something between the leaves and the drain. Not perfect, but better than mopping up inside.


Reply
jerry_scott
7 posts

Dome strainers are a decent stopgap, but yeah, they’re not set-and-forget - especially with maples dropping seeds and leaves everywhere. I’ve seen folks try those full gutter baskets or even custom screens, but honestly, nothing’s maintenance-free if you’ve got trees close by. The real danger is when people forget to check for clogs - water backs up fast on a flat roof, and leaks can get expensive quick. I usually recommend a seasonal check, at minimum. If you’re dealing with constant debris, sometimes trimming back branches is the only way to really cut down on the hassle.


Reply
brebel26
5 posts

Yeah, I hear you - there’s really no such thing as a “set it and forget it” solution with flat roofs and trees nearby. I’ve tried those mesh baskets and even a DIY screen, but stuff still finds its way in. I agree, trimming branches is a pain but sometimes it’s the only thing that actually makes a difference. At least with regular checks you can catch problems before they turn into a nightmare... learned that the hard way after one bad storm last fall.


Reply
wwalker48
12 posts

Flat roofs and trees are a tough combo, especially in areas with heavy rain. I’ve seen plenty of “gutter guards” fail when leaves pile up or seeds get through. Honestly, nothing beats physically clearing drains and scuppers every few weeks - especially after storms. Trimming branches is a hassle, but it really does cut down on debris. I’ve inspected roofs where just one missed drain led to water backing up under the membrane... not pretty. Regular checks are tedious but way cheaper than repairing water damage later.


Reply

Join the conversation

Share your experience or ask a follow-up question.

Scroll to Top