Parapet Repair & Replacement
A parapet is the low wall extending above a roofline, and in NYC it’s inspected as part of your building’s facade — a cracked, spalled, or leaning parapet is one of the most common reasons a Local Law 11 report comes back Unsafe. Altius CM repairs and reconstructs parapets on masonry, concrete, and stone buildings across the five boroughs, from coping replacement to full rebuilds.
Why parapets show up in FISP inspections
Buildings taller than six stories are inspected under the Facade Inspection and Safety Program (FISP), created by Local Law 11 and governed by NYC Construction Code §28-302.1. A Qualified Exterior Wall Inspector examines the entire exterior wall assembly — parapets included — and classifies it Safe, SWARMP, or Unsafe. A parapet with active spalling, loose coping stones, or structural cracking is a textbook Unsafe finding: it requires immediate public protection (a sidewalk shed or fence) and repair within 90 days of the report being filed, unless DOB grants an extension. Separately, Local Law 126 of 2021 requires an annual observation of parapets fronting a public right-of-way; see our parapet observation guide. Source: NYC DOB, Facade & Local Law.
What we repair
- Cracked, spalled, or delaminating concrete and masonry parapets
- Loose or deteriorated coping stones and cast stone coping
- Full parapet reconstruction where the wall has failed structurally
- Counterflashing and waterproofing detail at the parapet-to-roof transition, which is often where the underlying leak started
- Brick, stone, and stucco parapet types
Our work in this area
At The Armory, 529 West 42nd Street — a $3M+ FISP 9 facade restoration — Altius CM’s scope included full parapet reconstruction and terrace cast stone coping replacement alongside brick masonry stitching and lintel work. At 111 Hudson Street, the scope included new counterflashing at the parapet walls as part of a combined roofing and facade restoration contract. At Kips Bay Complex, parapet concrete repairs were part of an 8-structure, 460-balcony facade program.
Frequently Asked Questions
Does a damaged parapet automatically make my FISP report Unsafe? Not automatically, but it’s one of the most common triggers. If the QEWI finds active spalling, cracking, or instability that’s hazardous to pedestrians below, that condition gets classified Unsafe, which requires immediate public protection and repair within 90 days. A parapet with minor, non-hazardous wear may instead be classified SWARMP, giving you up to five years to address it.
Do I need a sidewalk shed while parapet repairs are underway? If the parapet was classified Unsafe, yes — public protection has to go up immediately, before repairs even start. Altius CM coordinates the shed installation alongside the repair scope so you’re not paying for two separate mobilizations.
Can a parapet be repaired without disturbing the roof membrane? Usually yes for coping and face repairs, but any work at the parapet-to-roof transition (counterflashing, cricket details) does involve the roof edge, and it’s worth coordinating both scopes in one contract so the waterproofing detail is continuous rather than two contractors’ work meeting at a seam.
How long does parapet reconstruction typically take? It depends on linear footage and access method (ground scaffold vs. suspended scaffold vs. rope access), but a full parapet rebuild on one elevation is typically weeks, not months. Coping-only repairs move faster.
