Roof, Balcony & Terrace Waterproofing
Flat roof membranes, parapet and coping joints, balcony and terrace decks, chimney flashing.
- 500+
- Violations Cleared
- 24hr
- Emergency Response
- 5
- NYC Boroughs Served
- 15+
- Years Experience
What We Do
Most roof leaks are not field-of-membrane failures — they are details: parapet walls, coping joints, chimney flashing, drains, and the transition where a terrace deck meets the wall. We repair the detail that is actually leaking, and install traffic-bearing membrane systems on balconies and terraces that have to be walked on.
A terrace or setback balcony is the hardest waterproofing condition in a New York building: it takes standing water, foot traffic, freeze-thaw cycling, and it sits directly over occupied space, so a small failure shows up as a ceiling stain in someone else's apartment. These decks need a real traffic-bearing assembly — membrane, protection layer, drainage course, and a wearing surface — with the threshold and railing penetrations detailed properly and positive slope to a working drain. We build them that way, and we flood-test before the wearing surface goes down, because that is the only honest way to know it works.
- Flat roof waterproofing — EPDM, TPO & modified bitumen
- Liquid-applied membrane systems for complex low-slope roofs
- Parapet waterproofing — both faces, cap, coping & through-wall flashing
- Coping stone joint raking & resealing to stop open-joint entry
- Balcony & terrace traffic-bearing membranes with drainage course
- Chimney waterproofing — crown repair, counterflashing & repointing
What Every ECO World Job Includes
These aren't extras — they're the baseline on every project we take on.
Fully Licensed & Insured
Every crew member is NYC-licensed in their trade and covered by $2M general liability and workers' comp.
Permit-First Policy
We file all required DOB permits before work begins — no shortcuts that create violations down the road.
On-Time Completion
We set realistic schedules and stick to them. You'll get a detailed timeline before we lift a tool.
Dedicated Point of Contact
One project manager owns your job from quote to closeout — no being bounced between crews.
Written Warranty
All trade work carries a minimum 1-year labor warranty. Manufacturer material warranties transferred to you.
Clean Job Sites
We protect your property daily — floor coverings, dust barriers, and thorough cleanup at end of every shift.
Our Step-by-Step Process
Clear and stress-free from first call to final sign-off.
Leak Trace & Moisture Scan
We inspect the roof or deck, scan for trapped moisture in the assembly, and identify whether the failure is in the field, at a detail, or at a drain.
Tear-Off or Targeted Repair
Saturated assemblies come off; sound ones get targeted repair. We never install new membrane over wet insulation — it fails and voids the warranty.
Membrane & Detail Work
Field membrane, parapet and coping treatment, flashing, and drain retrofits are installed to manufacturer detail, with slope corrected to drain.
Flood Test & Warranty
We flood- or holiday-test the assembly before any wearing surface is installed, then issue the manufacturer warranty and our own labor warranty.
Common Questions
Other Waterproofing Services
Ready to get started?
Free estimates, fast responses, and zero-surprise pricing — every time.