Storefront Glass Systems

Framing, Thickness & Glazing Types

Storefront glass is a non-load-bearing aluminum framing system, typically 1-3/4in x 4-1/2in or 2in x 4-1/2in in section, glazed with tempered or laminated lites and installed at ground level. The glass sits in the frame by set position center-set, front-set or offset-set. We fabricate, install, and handle emergency board-up and replacement across Cape Cod.

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Glass Storefront Specifications

SpecOptions
Thickness1/4in (6mm) monolithic tempered; 3/8in (10mm) and 1/2in (12mm) tempered for large lites and all-glass entrances; 3/4in (19mm) tempered for frameless door leaves; 1in (25mm) overall insulated units (typically 1/4in – 1/2in air or argon space – 1/4in); laminated 1/4in (6mm) and up; laminated-insulated 1in (25mm) overall
Glass typeTempered, laminated, laminated-insulated, insulated (with or without low-E), clear, low-iron, tinted (bronze, grey, blue-green), spandrel, obscure
Maximum spanSet by system depth, glass thickness, opening height and design wind pressure not by a single number. As a working guide: a 1-3/4in x 4-1/2in section with 1/4in tempered handles ordinary retail bay widths; taller or wider lites step up to 3/8in or 1/2in glass, or to the 2in x 4-1/2in section, or add an intermediate horizontal. Exposed coastal frontage raises the design pressure and can force the heavier section. Every opening gets calculated for its actual size and exposure
Edge profileNot applicable to framed lites edges are captured by the frame and stops. All-glass entrances and frameless sidelites get a flat-polished or seamed edge, with all holes, notches and patch cut-outs fabricated before tempering
Hardware finishClear anodized, bronze anodized (dark and medium), black anodized, and Kynar (PVDF) paint in custom colors. Kynar is the right call on a salt-air frontage it holds color and resists coastal weathering better than paint systems that are not fluoropolymer-based. Door hardware in matching or contrasting finishes
Framing depth1-3/4in x 4-1/2in or 2in x 4-1/2in. Deeper sections available where the opening demands it
Set positionCenter-set, front-set, offset-set
ThermalNon-thermal or thermally broken (polyamide strut or poured-and-debridged)
DoorsNarrow, medium and wide stile aluminum doors; all-glass doors on patch fittings; single or pairs; with or without transoms and sidelites
Door hardwareADA-compliant lever or push/pull hardware operable without tight grasping, pinching or twisting of the wrist; surface or concealed overhead closers with adjustable closing and latching speed; floor closers on all-glass doors; panic/exit devices where required; electric strikes and access control
Safety glazingTempered or laminated required in doors, in the fixed panels adjacent to doors (sidelites), and in other hazardous locations, under IBC/IRC safety glazing requirements. Your Cape Cod or Barnstable County building official has the final say on which openings qualify
Egress and markingExit doors must remain openable from the inside without a key, tool or special knowledge. Where required, exit and egress signage and glazing markings go on the drawing before fabrication. Confirm the requirement with the local official and the fire department

Which Storefront Glass System Do I Need?

For a heated, occupied ground-floor commercial space anywhere on Cape Cod, start with a thermally broken 1-3/4in x 4-1/2in center-set system glazed with 1in insulated units that combination handles the winter, the sightline and the reglaze.

Move up to the 2in x 4-1/2in section when the openings get tall or wide, or when the frontage is exposed to open water and the design wind pressure climbs. Choose laminated rather than tempered where you want a lite that stays in the opening after it breaks ground-floor security frontage, anywhere a fallout risk matters, or when an insurer asks for it.

And if the glazing is running past a floor line or needs engineered anchorage back to the structure, you are looking at a curtain wall, not a storefront, and we will say so.

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