Frequently Asked Questions

Union glaziers complete apprenticeship programs with hundreds of classroom hours in fabrication, safety, and installation techniques. This ongoing training ensures crews stay current on architectural systems, code requirements, and structural coordination. Projects benefit from consistent craftsmanship standards and workplace safety protocols that reduce delays and installation errors.

Cracked glass, broken seals causing fogging, and hardware failures are typically repairable if the frame remains structurally sound. Frames with corrosion, repeated seal failures, or thermal performance below current code often cost more to repair long-term than replacing the entire unit. Age over 20 years usually tips the decision toward replacement due to discontinued parts and outdated glazing.

Curtain walls are engineered structural systems spanning multiple floors, designed to handle wind loads and building movement without bearing weight. Storefront systems are single-story aluminum frames anchored between floor slabs. Curtain walls require design-build coordination with structural engineers, while storefronts follow standard framing dimensions and installation sequences.

Design-build starts during planning, with fabrication coordination, structural load calculations, and material specifications developed alongside architects and engineers. This approach identifies conflicts before installation, ensures custom glass meets building performance requirements, and sequences delivery with construction milestones. It prevents costly field modifications when complex glazing systems arrive on site.

Federal projects mandate prevailing wage compliance, certified safety training, and documented workforce qualifications that union contractors maintain through apprenticeship programs and ongoing certifications. Union shops also carry bonding capacity and insurance coverage levels required for government work. These credentials ensure projects meet federal labor standards and security clearance requirements.

Glass thickness, insulation rating, and tinting options change material costs significantly. Aluminum frame finishes, entrance door hardware, and accessibility features add variables. Structural modifications to accommodate new framing systems, permit requirements, and after-hours installation to avoid business disruption all impact pricing. Custom sizing for non-standard openings increases fabrication costs.

Condensation between panes means seal failure that can't be repaired. Difficulty opening windows, visible frame rot, or drafts around closed sashes indicate structural problems beyond simple fixes. If you're adding insulation or upgrading HVAC, replacing single-pane or old double-pane windows captures energy savings that offset replacement costs within years.

DC's freeze-thaw cycles require flashing systems that accommodate roof expansion without creating leak points. Summer humidity demands insulated glazing to prevent interior condensation. Proper pitch ensures rain and snow melt shed rather than pooling. Weather-resistant installation techniques account for seasonal temperature swings that cause sealant failure in poorly executed skylight frames.

Crews verify opening dimensions and structural anchors before delivery. Aluminum framing installs first, shimmed and leveled to manufacturer tolerances. Glass panels set into frames with structural glazing tape or wet-seal systems. Hardware installs last, with door closers adjusted for ADA compliance and panic hardware tested for code requirements.

Tempered or laminated glass must meet thickness and impact resistance standards based on railing height and location. Structural posts require engineer-stamped calculations for lateral load capacity. Guardrails need specific height clearances and spacing to prevent falls. Custom fabrication accommodates these requirements while matching architectural design, but code compliance drives material selection and installation methods.

Engineering reviews include structural load calculations, thermal performance modeling, and fabrication drawings coordinated with building plans. Services verify that custom curtain walls or specialty glazing systems meet wind load ratings, seismic requirements, and energy codes. This coordination happens before fabrication starts, preventing field conflicts when glass arrives sized for specific openings.

Installation schedules around business hours, with exterior work completed during low-traffic periods. Dust barriers and floor protection isolate the work area from occupied spaces. Phased installations allow partial storefront operation while sections undergo replacement. Coordination with property managers ensures loading zones remain accessible and common areas stay clear during glass delivery.