Aluminum Storefront Systems

A commercial aluminum storefront system is a non-load-bearing framing system of extruded aluminum members that holds fixed glass, operable vents, and often entrance doors at low-rise, ground-level exterior openings. Storefront framing is selected by frame depth, thermal strategy, glass plane, glazing requirements, entrance coordination, finish, water-management details, punched-opening conditions, and project specifications.

Boyd Aluminum manufactures commercial aluminum storefront systems for new construction, renovation, replacement, historic restoration, retail, institutional, education, healthcare, government, multifamily, and high-performance building projects. Boyd aluminum storefront framing systems include non-thermal storefront systems, thermally broken storefront systems, XT dual-thermal storefront systems, historic-replica storefronts, zero sightline vents, storefront entrances and entrance systems, muntin systems, finish options, and related storefront accessories for commercial building-envelope openings.

Storefront systems can be coordinated with Boyd commercial aluminum storefront doors, entrance framing, glass storefront systems, storefront layouts, punched openings, ribbon-window-style elevations, adjacent curtain wall conditions, glazing requirements, and Division 08 guide specifications. Boyd supports storefront product review, early design-assist coordination, specification review, CAD detail requests, product data requests, and bid-support information.

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Storefront System Options by Thermal Tier: Non-Thermal, Thermally Broken, and XT

Boyd storefront systems can be reviewed in three primary thermal tiers: non-thermal storefront framing, thermally broken storefront framing, and XT dual-thermal storefront framing. This thermal-tier language helps project teams compare standard storefront framing, thermal storefront systems, and XT storefront systems without assuming one system fits every opening. The table below is a selection guide for routing the project to the right storefront family; final product details, performance values, glazing limits, installation requirements, compatibility, and available configurations should be confirmed against current product documentation and project requirements before specification or submittal.

Commercial storefront system options by thermal tier and related vent selection notes.

Need help choosing a storefront system? Send the drawings, storefront elevations, door schedule, glazing requirements, thermal targets, and project specifications for review.

How to Choose a Commercial Storefront System

Storefront system selection starts with the opening type, building use, thermal requirements, glass plane, entrance needs, ventilation requirements, finish, and water-management conditions. For broad selection, review the storefront system by thermal tier first, then narrow the choice by glass position, entrance integration, historic requirements, and accessory coordination.

• Non-thermal storefront framing: B350, B425, and B450N for storefront applications where a non-thermal aluminum framing path is appropriate.

• Thermally broken storefront framing: B450 for projects that require a thermal barrier in the storefront framing system.

• XT dual-thermal storefront framing: B450XT center-set and B460XT front-set for higher-performance thermal storefront projects where thermal strategy, glass plane, entrances, and system compatibility need coordinated review.

• Historic-replica storefront framing: BH01 for historic restoration, adaptive reuse, downtown renovation, steel-look storefront work, and historic-review projects.

• Zero sightline ventilation: SV100 for compatible storefront and curtain wall framing conditions where ventilation is needed within the glazed wall system.

Center-Set and Front-Set Storefront Framing

Glass-plane position affects the appearance and coordination of a storefront system. Center-set storefront framing places the glass closer to the center of the frame, while front-set storefront framing shifts the glass plane toward the exterior face for a curtain-wall-like appearance. Both XT storefront systems use a dual pour-and-debridge thermal barrier; confirm the current B450XT or B460XT product documentation for exact configuration, glazing path, and assembly details. For XT storefront projects, Boyd's XT storefront line is the natural place to compare B450XT center-set framing, B460XT front-set framing, and related thermal entrance door coordination.

Storefront Systems, Curtain Wall and Window-Wall-Style Elevations

Storefront systems are typically used for low-rise, ground-level, single-story glazed openings, including storefront entrances, punched openings, and some ribbon-window-style elevations. When a glazed wall spans multiple stories, crosses floor lines, or requires curtain-wall anchorage and movement accommodation, review curtain wall system details instead. Send the elevations and opening conditions to Boyd when the project sits between storefront, curtain wall, and window-wall-style design intent.

Common Storefront System Coordination Issues

• Thermal continuity: Coordinate the storefront thermal strategy with adjacent wall conditions, glazing requirements, entrance framing, and surrounding envelope details.

• Water management: Storefront systems drain through weep paths and related sill conditions. Coordinate sill flashing, end dams, perimeter sealant joints, thresholds, glass stops, and adjacent construction early so the storefront framing, glazing, and opening conditions work together.

• Mullions and spans: Confirm mullion spacing, opening sizes, reinforcement needs, expansion conditions, anchorage, wind load, and glazing requirements for the selected storefront system. For fabrication and assembly review, confirm whether the selected system uses screw spline, shear block, or other documented assembly methods.

• Entrance integration: Coordinate storefront framing with commercial aluminum storefront doors, door pairs, transoms, sidelites, thresholds, panic hardware, access-control requirements, and clear opening requirements.

• Anchoring and perimeter accessories: Anchors, panning, receptors, snap trim, perimeter conditions, and field installation requirements should be reviewed with the selected system. See Boyd window and storefront accessories for related coordination items.

• Ventilation: If the storefront elevation needs operable ventilation, review whether the SV100 Zero Sightline Vent fits the selected storefront or curtain wall framing condition.

• Historic grids and muntins: Historic storefront projects may require grid pattern, muntin layout, sightline, finish, and review-authority coordination. Review applied architectural muntins where grid appearance is part of the storefront design.

• Finish coordination: Anodized, painted, and project-specific finish requirements should be coordinated early with storefront framing, entrances, accessories, and adjacent materials. Review finish options when color, durability, or sample coordination matters.

What to Send Boyd for Storefront System Review

To support a storefront request, send the information that lets Boyd match the storefront system to the project rather than guessing from a generic storefront label.

• Project location, bid deadline, and contact information.

• Architectural drawings, elevations, storefront schedules, door schedules, and opening sizes.

• Project specifications, Division 08 requirements, glazing requirements, and finish requirements.

• Thermal or energy-code targets if specified, including U-factor, SHGC, CRF (condensation resistance factor), or other condensation requirements where included in the documents.

• Entrance requirements, panic hardware requirements, access-control requirements, thresholds, transoms, sidelites, and vestibule conditions.

• Water-management details, sill conditions, flashing conditions, perimeter conditions, anchors, mullions, panning, receptors, and other accessory requirements.

• Historic-review requirements, grid requirements, muntin layouts, or preservation-related documentation if the storefront is part of a historic or adaptive-reuse project.

Related Boyd Storefront Resources

• Commercial Aluminum Storefront Doors - storefront entrances, swing entrance doors, narrow stile, medium stile, wide stile, and thermal entrance door selection.

• XT High-Performance Thermal Storefront Systems - B450XT, B460XT, D350XT, and D500XT thermal storefront and entrance coordination.

• Curtain Wall System Details - use when the project moves beyond storefront framing into curtain wall conditions.

• Architectural Resources - CAD details, product data, Division 08 guide specifications, and project documentation.

• Commercial Window and Door Products - product-family routing for storefront systems, storefront doors, curtain wall, windows, patio doors, blast, impact, historic, and accessories.

• Historic-Replica and Steel-Replica Systems - historic storefront, historic window, steel-replica, applied muntin, and preservation-review coordination.

• Window and Storefront Accessories - panning, receptors, trim, mullions, anchors, and related accessory coordination.

• Finish Options - anodized, painted, Kynar®, powder coat, and project-specific finish coordination for storefront framing, entrances, and accessories.

• Direct Assistance - product selection, specification support, and bid coordination.

Commercial Storefront System Questions

How do I choose between non-thermal, thermally broken, and XT storefront systems?

Start with the project requirements. Non-thermal storefront framing may fit projects where thermal performance is not the controlling factor. Thermally broken storefront framing is used when the storefront system needs a thermal barrier. XT dual-thermal storefront framing should be reviewed when higher-performance thermal storefront framing, glass-plane coordination, historic-grid coordination, or thermal entrance-door integration is part of the design intent. Final selection should be checked against current product documentation, glazing, specifications, opening conditions, and project requirements.

How tall can an aluminum storefront system go?

Storefront framing is generally used for single-story, ground-level spans, but the practical height limit depends on the selected system, frame depth, wind load, mullion spacing, glazing, anchorage, and opening conditions rather than one universal number. When an elevation extends beyond a typical storefront condition, the design may need to shift to curtain wall. Send elevations, storefront schedules, opening sizes, and design pressures for project-specific review.

What ratings does an exterior aluminum storefront need?

Exterior storefront requirements depend on the project. Storefront systems may need to be reviewed for structural wind-load or design-pressure requirements, air infiltration, water resistance, thermal performance such as U-factor or SHGC, safety glazing, accessibility, entrance hardware, impact requirements where applicable, and other project-specific specification requirements. The applicable requirements are set by the building code, project specifications, and authority having jurisdiction.

How should storefront water management be coordinated?

Storefront water management should be coordinated through the sill condition, flashing, end dams, weep paths, perimeter sealant joints, glass stops, thresholds, and adjacent construction. These details are not just accessory decisions; they affect how the storefront system interfaces with the building opening. Include available sill and perimeter details when requesting Boyd storefront review.

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