New Flat Roof Skylight Installation in New Rochelle
RH Renovation NYC completed a high-performance flat roof skylight installation featuring structural curb framing, high-efficiency glass unit mounting, multi-layer elastomeric membrane flashing integration, and waterproof perimeter sealing for a residential property located in New Rochelle, Westchester County, NY. Situated along the Long Island Sound coastline, properties in New Rochelle are exposed to aggressive regional weather conditions—including heavy coastal wind-shear, driving rain from seasonal nor’easters, winter freeze-thaw cycles, and prolonged thermal expansion during hot summer months.
Integrating a skylight into a low-slope flat roof requires rigorous hydrodynamic planning. Without engineered elevated curb framing and custom membrane flashing, roof penetrations on flat surfaces can become major ponding water failure points. This project was engineered to create a structural, code-compliant roof opening, mount an energy-efficient insulated glass skylight assembly, and weld the surrounding membrane to ensure absolute, leak-free waterproofing while maximizing natural day-lighting inside the home.
Comprehensive Scope of Work & Installation Methodology
To adhere strictly to Westchester County municipal building codes and national energy standards, our licensed and insured flat roofing and glazing specialists executed a multi-phase technical installation protocol:
Structural Opening Cutout & Subdeck Reinforcement: Technicians precisely laid out the designated roof opening and cut through the existing flat roof membrane, insulation, and roof decking. Neighboring roof joists were sistered and framed with heavy-duty dimensional lumber to ensure structural load distribution around the new roof penetration.
Custom Weather-Tight Curb Framing Construction: An elevated 2×6 wood curb frame was constructed around the perimeter of the opening. Raising the skylight frame 6 to 8 inches above the primary flat roof plane ensures that standing water or heavy snow accumulation cannot reach the glazing unit’s horizontal seal.
High-Performance Skylight Unit Mounting: A commercial-grade, energy-efficient flat roof skylight unit—featuring low-E, argon-gas insulated safety glass—was securely anchored to the structural wooden curb. The unit was leveled and fitted with heavy-duty gasket seals to withstand coastal wind pressures and eliminate air infiltration.
Targeted Waterproofing & Membrane Flashing Integration: Heavy-duty rubberized flat roof membrane (EPDM/TPO) was wrapped up and over the outer faces of the wood curb. Field seams were hot-air welded or bonded using high-tack adhesive tapes, forming a continuous, monolithic waterproofing barrier from the flat roof deck up to the skylight glass frame.
Termination Bar & Industrial Lap Sealant Application: Metal termination bars were mechanically anchored along the upper curb edges to prevent membrane slippage. Non-sag polyurethane lap sealants were applied along all counter-flashing joints and corners to form a permanent defense against wind-driven rain.
Final Quality Assurance & Water-Spray Audit: A rigorous water-test and seam-probe inspection verified that all field welds, curb transitions, and perimeter seals met strict manufacturer warranty standards, followed by a complete site cleanup.
Project Highlights & Technical Specifications
Service Category: Low-Slope Flat Roof Penetration, Custom Skylight Installation & Membrane Waterproofing
Project Location: New Rochelle, Westchester County, NY
Core Materials Used: Energy-efficient insulated low-E safety glass skylight assembly, structural framing lumber, commercial-grade EPDM/TPO membrane, heavy-gauge metal termination bars, self-adhering membrane boots, and non-sag polyurethane lap sealants.
Key Engineering Focus: Elevated curb hydrodynamic defense, coastal wind-shear resistance, natural day-lighting, thermal insulation efficiency, and local building code compliance.
Results & Homeowner Value
By constructing a custom elevated curb assembly and integrating the flat roof membrane seamlessly around the new skylight, RH Renovation NYC successfully brought abundant natural daylight into the property without compromising the roof’s waterproofing integrity. The New Rochelle homeowners now benefit from an energy-efficient architectural feature, superior indoor illumination, and complete peace of mind during severe weather.
