Building Strong Foundations Across New York City
Helping property owners with their projects, solving issues efficiently, and delivering dependable, high-quality construction service.
Interior epoxy and polyurethane injection, which in Manhattan is often the only viable route since exterior excavation isn't possible on most lots.
Sequential pit underpinning for townhouses affected by adjacent construction, or where the building needs to be carried down to competent bearing. Filed, inspected, and monitored.
Carbon fiber, steel bracing, and wall reinforcement for cellar walls under load from adjacent excavation or lateral pressure.
Rebuilding and repointing rubble stone and brick foundation walls in pre-war townhouses and walk-ups, including shared party wall footings.
Repair of deteriorated sidewalk vault walls and roofs, where structural failure and water intrusion tend to appear together.
Negative-side waterproofing, interior drainage, sump systems, and slab repair for cellars where the outside of the wall is unreachable.
Work Experience
Foundation work in Manhattan is a compliance and logistics job before it's a concrete job. Underpinning a townhouse on the Upper West Side means a DOB-filed support-of-excavation plan, special inspections, vibration and crack monitoring, and usually a license agreement with the neighbor whose wall you're working beside. A cellar in the Village may extend into a vault sitting over Con Edison infrastructure. There is no staging area, no lay-down space, and material often has to come through the front door by hand.
At Sky Grid Group NY, support-of-excavation filings, special inspections, monitoring, and Local Law 11 requirements are handled by the same team performing the work; nothing gets handed off. We are structural concrete and masonry specialists, and that focus is why Manhattan townhouse owners, co-op boards, and commercial landlords bring Sky Grid Group NY in on their most constrained sites.
We use repair methods suited to tight sites, shared foundations, limited exterior access, and occupied buildings.
From underpinning and structural stabilization to landmark and vault-related conditions, projects are planned around city requirements.
Get a detailed inspection, written scope, itemized estimate, and realistic project schedule before work begins.
Our experts lead every project with clarity, responsibility, and a deep understanding of complex site requirements.
All Member All Member
Project Coordinator
Concrete & Masonry Specialist
Site Operations Manager