GD Osman
Our Work

Commercial building-envelope work across New York, the Tri-State, and nationwide

A look at the kinds of roofing, waterproofing, masonry, siding, and window work GD Osman scopes as one coordinated envelope — not isolated trades.

Roofing crew applying membrane roofing on a commercial building

Commercial Roof Replacement

Roofing · Membrane & transitions

Facade restoration on an existing commercial building

Facade Restoration

Stone & Masonry · Envelope

Traffic coating system applied to a commercial parking deck

Parking Deck Waterproofing

Waterproofing · Traffic coating

Mason repointing brick mortar joints on a commercial building facade

Masonry Repointing

Stone & Masonry

Waterproofing detail work on a commercial building

Below-Grade Waterproofing

Waterproofing

Restored masonry facade with new coping and flashing

Coping & Perimeter Metal

Sheet Metal · Roof edge

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