Windsor Terrace is the narrow neighborhood between Prospect Park and Green-Wood Cemetery, split by the Prospect Expressway. Its housing is mostly two and three story attached row houses from the early 1900s through the 1920s, frame and brick, many covered in siding, almost all with flat roofs.
A flat roof on an attached row is never just your roof. Your parapets are shared with the houses on both sides, and the flashing where your membrane meets the party wall is where most leaks start, especially when the neighbors' roofs were done at different times with different systems.
These roofs also carry a lot of old penetrations. Roof hatches and bulkheads with rotted curbs, plumbing vents, old skylights and abandoned chimneys all have to be flashed into the membrane. One neglected penetration can leak into a top floor bedroom on an otherwise sound roof.
Being next to the park means trees, and trees mean leaves in the drain. Most of these roofs drain to a single small drain or a scupper at the back, and when it clogs in the fall the roof holds water through the winter.
What we see on Windsor Terrace roofs: leaks at the party wall flashing between neighbors, rotted roof hatch curbs, single rear drains packed with leaves, old skylights and vents with failed flashing, and roofs layered over two or three times instead of torn off.
📞 Serving Windsor Terrace and all surrounding Brooklyn neighborhoods. Call (516) 713-9199 or (917) 570-7311 for a free estimate.
Q: Do you replace flat roofs in Windsor Terrace?
A: Yes. MLM Construction Group replaces and repairs flat roofs on attached row houses throughout Windsor Terrace from our shop at 1717 Avenue P. Call (516) 713-9199 for a free inspection and written estimate.
Q: Why does my roof leak at the wall shared with my neighbor?
A: The flashing where your membrane turns up the party wall is a common failure point, especially when the two roofs were done at different times with different materials. It needs a proper transition, not roofing cement.
Q: My roof hatch leaks every time it rains. Can it be fixed?
A: Yes. Hatch leaks usually come from a rotted wooden curb or failed flashing around it. The curb can be rebuilt and properly flashed into the membrane, and older hatches can be replaced with insulated units.
Q: How often should a flat roof drain be cleared?
A: At least once a year, after the leaves fall. On tree lined blocks near the park, twice a year is better. A clogged drain lets water stand on the roof through the winter, which shortens its life and causes leaks.
Q: My roof has been covered over several times. Does it need a tear off?
A: Usually yes. Layered roofs hide wet material and rot, add weight and make leaks hard to trace. A tear off lets the deck be inspected and repaired before the new roof goes on.
MLM Construction Group works out of 1717 Avenue P in Brooklyn, NY 11229. Windsor Terrace is inside our regular service area, so estimates and emergency calls there are handled by our own crew, not subcontracted out.
Unlike competitors who specialize in only one trade, MLM Construction Group handles roofing, stucco, EIFS, and gutters. One contractor for your entire exterior.
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