Parapet flashing (the metal or sealant that connects the parapet wall to the roof) is critical for preventing water infiltration. When it fails, serious damage follows.
How Flashing Works
Flashing directs water away from the parapet-to-roof joint, preventing it from seeping into the building. Without proper flashing, moisture penetrates the wall and roof.
Common Flashing Failures
- Separated flashing: Metal pulls away from the wall, creating gaps
- Rusted flashing: Corrosion creates holes and weak points
- Failed sealant: Caulk deteriorates, losing waterproof seal
- Poor installation: Flashing installed incorrectly or without proper overlap
- Missing flashing: Some older buildings lack flashing entirely
Signs of Flashing Problems
- Water leaking inside the building near the parapet
- Staining or discoloration on interior walls below parapets
- Visible rust or corrosion on metal flashing
- Cracked or missing caulk at the parapet-roof junction
- Moisture in the attic or upper floors
Prevention & Repair
- Regular inspections catch flashing problems early
- Flashing replacement: $500–$2,000+
- Preventative sealant maintenance: $200–$500
- Delaying repairs allows water damage that costs 10x more
Catch it early: Schedule your parapet inspection today. We'll identify flashing issues before they become expensive. Call (516) 591-3550 or use code PARAPET50 for $50 off.
Get Your Parapet Inspection Today
NYC parapet inspections in 24–48 hours. Licensed, insured, DOB-compliant. Use code PARAPET50 for $50 off.
Book Now or call (516) 591-3550