Flat Roof Ponding Repair in Queens That Gets Your Roof Draining
Flat roof ponding repair means Flat Roofers NY finds why water sits on your roof and gives it a path to the roof drain, scupper or gutter.
Still there 48 hours after rain? That's ponding. It's fixable.
Is the water still there two days later?
Some water after a storm is normal.
Water still standing 48 hours after rain is ponding. If it's already dripping indoors, start with emergency repair for a pond that's leaking inside.
Where to look after rain
- Low spots in the middle of the roof
- Around the roof drain or scupper
- Wherever leaves and grit pile up, since clogged drains back water up fast
What standing water does to your roof
Standing water loosens seams. It wears the membrane out faster. Algae and weeds grow in it. And every inch of depth adds about 5.2 pounds per square foot to the roof deck.
You usually notice it as leaks that keep coming back.
Fixing it gets you positive drainage, so water runs off within hours. Your membrane lasts its full life. The leak calls stop.
One of three fixes, matched to the cause
We pick the fix by why the water stays.
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Fix the drainage
Clear the drain, relocate it or add another, open a scupper, or repair the gutter and downspout.
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Fill the low spot
We build up the dip so it sheds water, then cover it with new membrane.
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Re-slope the roof
Tapered insulation, crickets and saddles steer water to the drains. It's often done at re-roofing.
Cause, what you'll see and how we fix it
These five causes are behind the ponds we find on Queens roofs.
| The cause | What you see on the roof | Our fix |
|---|---|---|
| Clogged drain or scupper | Water ringed around the outlet, leaves on top | Drain clearing |
| Drain set above the low point | Pond sitting a few feet from a dry drain | Drain relocation or an added drain |
| Sagging or rotted roof deck | Dip that feels soft underfoot | Deck repair plus low spot fill |
| No built-in slope on a low-slope roof | Shallow water spread wide | Tapered insulation with crickets |
| Puddle at a seam or patch | Water lying along a lap or old repair | Seam repair or membrane patch |
Damage the pond leaves behind
Look for blistering, cracked membrane, soft or sagging decking, and water stains on the ceiling below.
We repair that alongside the drainage fix. New membrane and seam repair for what the standing water broke down get matched to your TPO, EPDM, modified bitumen or built-up roof.
Sometimes the damage runs too wide to patch. Then replacement is the better spend, and we'll say so. You can check what a new roof costs when patching won't hold before you decide.
Proof the low spot is gone
Every flat roof ponding repair we do ends the same way. We run a hose across the old ponded area and watch the water reach the drain. Or we recheck after the next rain.
Row houses, two-family homes, apartment buildings, storefronts and garage roofs all get this test.
After that, routine drain and scupper clearing keeps water from pooling again.
Want a free look at where your water sits?
We'll walk the roof, find where the water sits and why, and give you a written fix.