Commercial Curtain Wall Replacement in New Jersey

Three diagnostic signs push toward full replacement: (1) sealant failure across the majority of joints (perimeter, head, sill, vertical mullions) — once sealant is at end-of-life, individual repairs just chase the failure around the building; (2) thermal break failure in older aluminum systems causing condensation and energy loss the building can't insulate around; (3) widespread IGU seal failures (more than 25–30% of the glazing panels showing fog or visible degradation). Single-panel glass replacement, isolated sealant repair, and pressure-plate gasket replacement are all valid for limited failures. We do the assessment and give you the honest call.

Curtain wall spans floor to floor and hangs off the building structure — it doesn't carry vertical load, just wind and weather. Common on mid-rise and high-rise commercial buildings. Window wall sits floor-to-floor between concrete slabs (the slab is exposed) — easier to install, cheaper, common on multi-family and lower-end office. Storefront is for the first floor or two — heavier framing for retail/restaurant glazing with entry doors integrated. Each has its own framing systems, sealant details, and replacement methodologies. We have replaced both curtain wall and storefront glass on commercial buildings; the assessment tells you which system yours has.

Usually, yes. Occupied-building work proceeds floor-by-floor (sometimes bay-by-bay within a floor), with temporary interior weather barriers put up each evening so workspaces stay sealed. Tenant coordination takes more planning than the glazing itself, so the staging plan is agreed with the building manager before any panel comes out.

No. Curtain wall framing comes from several manufacturers, each with its own series, gaskets and glazing details. We assess the existing framing system first, then either match it (cleaner integration if the system is still in production) or recommend a current system that performs better if the original is obsolete.

For a typical 4-story, 30,000 sq ft glazed area replacement: assessment and scope (2–4 weeks), engineering and submittal review (4–8 weeks), framing and glass procurement (8–16 weeks depending on system), actual install (6–12 weeks floor-by-floor). Full project from first walk to last panel is typically 6–9 months, with the install window concentrated in roughly 8–14 weeks of crew time. Faster on smaller buildings; longer on highly customized systems or fire-rated assemblies.

AAMA 501.2 is the standard field water check for installed curtain wall: a calibrated nozzle at a set water pressure is worked slowly along the framing joints of representative areas while someone inside watches for leaks. It is a quality-assurance check, not a full pressure-chamber performance test (that is AAMA 503 / ASTM E1105). When the project spec or the owner calls for testing, an independent testing firm runs it and the results go to the building owner in writing.

Significantly. A 1970s-1990s aluminum curtain wall with single-pane or first-generation insulated glass typically performs at U-factor 0.60–0.80. A modern thermally-broken aluminum system with high-performance IGU (argon-filled, low-E coated, possibly triple-pane) can hit U-factor 0.20–0.30 — roughly 3x better insulation. On a large building this translates to meaningful HVAC savings, but more importantly eliminates the persistent condensation, drafts, and tenant comfort complaints that drive lease turnover.

We carry general liability and workers' compensation insurance, and a current Certificate of Insurance is available on request before mobilization. If your project requires payment and performance bonds or specific additional-insured wording, send the requirements with the bid request and we'll confirm with our insurance agent what we can provide before we quote.