Precision Roofing Systems Engineered for NYC Extreme Weather.
From multi-ply architectural shingle installations and commercial SBS modified bitumen torch-down roofs to cold-applied polyurethane terrace membranes and leak defense.
Built specifically to withstand New York’s rigorous structural and environmental demands.
Green Building Construction LLC delivers comprehensive roofing and waterproofing assemblies designed specifically for New York City's demanding climate cycle of humid summers, coastal storms, and sub-zero winter freeze-thaw events. Headquartered in the Bronx, our in-house roofing crews execute full structural deck rebuilds, commercial SBS modified bitumen membranes, cold liquid-applied terrace elastomeric coatings, and copper edge flashings with rigorous architectural precision.
Specialized Trade Divisions
Full in-house tool and crew inventoryAuthentic Craftsmanship. Verified Project Photos.
Direct evidence of our teams working across New York residential rooftops, brownstone facades, concrete flatwork, and luxury interiors.
What’s Included in Every Project
We believe in complete line-item transparency. Here is exactly what our crews deliver at each phase of your project.
Substrate & Deck Inspection
Complete tear-off down to original structural joists or tongue-and-groove decking, replacing dry-rotted and damaged structural plywood.
Thermal Underlayment & Air Barrier
Installation of high-temperature self-adhering vapor-permeable membrane and polyisocyanurate (Polyiso) insulation boards to boost R-value.
Primary Waterproofing Layer
Multi-ply SBS granule-surfaced torch-down capsheet or architectural Class A fire-rated shingles with reinforced mechanical fastening.
Architectural Sheet Metal Detailing
Custom-fabricated heavy-gauge copper or aluminum perimeter drip edges, chimney saddles, step flashings, and parapet termination bars.
Certified Water Testing & Final DOB Sign-Off
48-hour standing water flood tests on flat surfaces and electronic leak detection before issuing warranty certificates and closing permits.
Premium Grade Architectural Products
Predictable 4-Stage Project Sequencing
How we move your property from initial inspection and municipal filings to watertight sign-off.
Onsite Inspection & Thermal Scan
Our senior estimator conducts a comprehensive physical inspection, measuring slopes, core-sampling existing layers, and diagnosing hidden moisture intrusion.
Engineering & DOB Permitting
We prepare exact material takeoff specifications, file necessary Department of Buildings permits, and coordinate sidewalk bridge protection if required.
Execution & Weather-Tight Mobilization
Tear-off and rebuild proceed in synchronized phases to ensure your property remains 100% waterproof and sheltered at the end of every work day.
Water Testing, Cleanup & Warranty Sign-Off
Rigorous flood testing, magnetic sweep for stray nails, site pressure wash, and delivery of stamped manufacturer warranty paperwork.
Selected Project Highlights
Pelham Parkway, Bronx, NYMulti-Family Parapet & Flat Roof Overhaul
Scope: 6,500 sq ft flat roof tear-off, R-30 polyiso insulation, 2-ply SBS torch system, and limestone coping reset.
Outcome: Zero interior leaks, 28% drop in heating costs, and 20-year NDL warranty signed off.
Riverdale, Bronx, NYHistoric Victorian Sloped Roof Replacement
Scope: Steep-slope architectural shingle installation with custom copper dormer valley flashings.
Outcome: Preserved historic neighborhood aesthetics with modern 130-mph hurricane wind resistance.
Frequently Asked Questions
Clear answers regarding permits, timelines, costs, and materials for Architectural Roofing & Waterproofing Systems.