Tenant improvement (TI) projects often involve much more than changing the interior layout of a commercial space. Depending on the condition and design of the existing building, the storefront may also need new glass, aluminum framing, entrance doors, or a completely new storefront system.
For general contractors, builders, architects, and property owners, storefront glazing needs to be considered early because it connects the building exterior with interior construction. Opening dimensions, existing framing, door locations, glass specifications, finishes, waterproofing, and installation sequencing can all affect the final result. Glazenix LLC provides commercial storefront glass, aluminum framing, glass entrances, and storefront glazing for tenant improvements, renovations, and new commercial construction throughout Seattle and Western Washington.
What Is a Commercial Storefront System in a Tenant Improvement?
A commercial storefront system typically combines aluminum framing and glass to create exterior windows, glazed walls, entrances, sidelites, and display areas. Storefront systems are commonly used at ground-level commercial spaces such as retail stores, restaurants, offices, medical facilities, and mixed-use properties. In a tenant improvement project, the storefront may be:
- Part of the existing building and retained as-is
- Modified to accommodate a new tenant layout
- Partially replaced
- Completely replaced with a new storefront system
- Expanded to create larger glazed areas
- Reconfigured around a new commercial entrance
The correct approach depends on the existing conditions and the requirements of the new tenant space.
A storefront system should therefore be treated as part of the overall construction scope rather than simply as a glass installation. The framing, glass, doors, hardware, openings, finishes, and surrounding construction need to work together.
When Does a TI Project Require New Storefront Glass?
Not every tenant improvement requires a completely new storefront. In some projects, the existing glass and framing can remain while interior spaces are renovated. New commercial storefront glass may become necessary when:
- Existing glass is damaged or deteriorated
- The storefront dimensions are changing
- A new entrance location is required
- Existing glass does not meet the project’s specifications
- The tenant wants a substantially different storefront appearance
- Existing framing is damaged or incompatible with the renovation
- Larger display areas or windows are being added
The existing storefront needs to be upgraded as part of the building renovation
For example, a retail tenant taking over an existing space may retain much of the original storefront while replacing damaged glass and upgrading the entrance. Another project may require complete removal and installation of a new aluminum storefront system.
The important point is to determine the glazing scope before materials are ordered.
Storefront Replacement vs. Modifying an Existing System
One of the first decisions on an existing commercial property is whether to modify the current storefront or replace it.
Modifying an Existing Storefront
Keeping the existing system can make sense when the aluminum framing is in good condition and the new tenant’s design can work within the existing openings.
The scope might include:
- Replacing individual glass panels
- Replacing damaged aluminum components
- Reconfiguring selected openings
- Replacing storefront doors
- Updating hardware
- Replacing specific glazing units
Complete Storefront Replacement
A complete replacement may be more appropriate when the existing framing is damaged, outdated, incompatible with the new design, or unable to accommodate the required glass and entrance configuration. A replacement project may include:
- New aluminum storefront framing
- New commercial glass
- New entrance doors
- Sidelites and transoms
- New hardware
- New storefront configurations
- Interior and exterior coordination
Existing conditions should be evaluated before deciding between these approaches. Glazenix supports both storefront replacement and targeted storefront upgrades for commercial renovation and tenant improvement projects.
Choosing Aluminum Framing and Glass
The aluminum framing and glass should be considered together because they form the storefront system. Aluminum framing provides the framework around the glazed openings and influences the finished appearance, sightlines, dimensions, and configuration of the storefront. Glass specifications, meanwhile, depend on the project’s application, dimensions, safety requirements, design objectives, and performance requirements. Depending on the project, storefront glazing may involve different glass configurations, including:
- Clear glass
- Tempered safety glass
- Laminated glass
- Insulated glass
- Tinted glass
- Other specified commercial glazing configurations
The appropriate specification should come from the project drawings, architectural specifications, applicable requirements, and actual site conditions.
For contractors, it is important to confirm the required glass type, thickness, dimensions, framing configuration, finish, and performance specifications before fabrication.
Commercial Glass Entrance Doors
The entrance is one of the most visible and heavily used components of a commercial storefront. A tenant improvement may require a new entrance because the tenant’s floor plan has changed, the existing doors are damaged or outdated, or the new design calls for a different entrance configuration. Commercial glass entrance systems can incorporate:
- Single doors
- Paired doors
- Aluminum-framed glass doors
- Sidelites
- Transoms
- Commercial door hardware
- Storefront framing
The entrance should be coordinated with the surrounding storefront so that the door, glass, aluminum framing, and adjacent openings create a consistent system. For high-traffic retail and commercial spaces, contractors should also confirm door operation, hardware, clearances, accessibility requirements, and other project-specific requirements before fabrication.
Storefront Windows and Display Areas
For retail tenants, storefront windows are more than architectural elements. They create the visual connection between the business and the surrounding commercial environment. Large glazed areas can provide:
- Product visibility
- Natural light
- Exterior visibility
- Space for displays
- A more open appearance
- A prominent area for branding and visual merchandising
Storefront windows may consist of fixed glass panels, sidelites, transoms, or other components integrated into the aluminum storefront system. For a retail tenant improvement, the storefront design should be coordinated with the interior layout. Display walls, counters, shelving, signage, lighting, and customer circulation can all affect where the storefront openings and entrance should be located.
Glazenix provides retail storefront glass and storefront systems for new construction, renovations, tenant improvements, and replacement projects.
Coordinating Storefront Glazing with Other Trades
Storefront installation rarely happens in isolation. The glazing scope can interact with:
- Framing and drywall
- Flooring
- Electrical
- HVAC
- Waterproofing
- Exterior finishes
- Interior finishes
- Door hardware
- Signage
- Millwork
- Painting
This makes coordination especially important during tenant improvement projects.
For example, the final storefront opening may depend on framing dimensions, while interior finishes need to terminate cleanly against the storefront. Electrical and signage work may also depend on the final location of entrances and glazed areas.
Glazing installation should therefore be incorporated into the project schedule rather than treated as a final-stage task.
Glazenix works with contractors and project teams to coordinate storefront dimensions, glass specifications, framing, installation requirements, and construction sequencing.
Common Issues During Storefront Renovations
Existing commercial spaces can present conditions that are not obvious from drawings alone. Common issues include:
Inaccurate Existing Dimensions
Older storefronts may not match the dimensions shown on available drawings. Field verification can help identify discrepancies before fabrication.
Damaged or Deteriorated Framing
An existing aluminum frame may appear usable but contain damaged components or conditions that make modification difficult.
Unexpected Site Conditions
Existing walls, floors, ceilings, finishes, or adjacent construction may affect the storefront installation.
Mismatched Components
When only part of an existing storefront is replaced, differences in aluminum finishes, profiles, glass appearance, or hardware can become noticeable.
Scheduling Conflicts
Storefront installation may depend on other trades completing surrounding work. Poor sequencing can result in delays or require additional coordination.
Incorrect Glass Specifications
Ordering glass before confirming the project requirements can create expensive fabrication or scheduling problems. These issues are why storefront conditions, dimensions, specifications, and sequencing should be reviewed before fabrication begins.
New Tenant Build-Outs vs. Existing Storefront Upgrades
Not every TI project starts from the same condition.
New Tenant Build-Out
In a new tenant build-out, the storefront may already exist but the tenant’s new design could require modifications to the entrance, glazing configuration, or interior-facing storefront. The glazing scope may include:
- New storefront glass
- New entrance doors
- New aluminum framing
- Sidelites and transoms
- Interior glass
- Storefront modifications
- Existing Storefront Upgrade
An existing storefront upgrade focuses more heavily on the current condition of the building. The contractor may need to determine whether to:
Repair → Replace selected components → Modify the system → Replace the entire storefront
The best approach depends on the existing framing, glass, opening dimensions, architectural requirements, and project budget. A targeted storefront upgrade can sometimes modernize a commercial property without requiring complete reconstruction.
Questions Contractors Should Answer Before Ordering Storefront Systems
Before ordering commercial storefront glass or aluminum storefront systems, contractors should have clear answers to several basic questions:
| Question | Why It Matters |
| What is the exact storefront opening size? | Determines glass and framing dimensions |
| Is the existing storefront being retained or replaced? | Defines the overall scope |
| What glass specification is required? | Affects safety, performance, appearance, and fabrication |
| What aluminum framing system is specified? | Determines profiles, dimensions, and configuration |
| What finish is required? | Keeps the storefront consistent with the architectural design |
| Where are the entrance doors located? | Affects framing, glass, hardware, and circulation |
| Are sidelites or transoms required? | Changes the storefront configuration |
| What are the existing site conditions? | Helps prevent field conflicts |
| Which trades work around the storefront? | Allows proper sequencing |
| When must the storefront be installed? | Helps coordinate fabrication and construction scheduling |
| Are there project-specific code or accessibility requirements? | Ensures the system is designed around applicable requirements |
| Does the existing structure support the proposed configuration? | Important for renovation and modification projects |
Having these details established before fabrication can reduce field changes, delays, and material problems.
Commercial Storefront Glass for Seattle Tenant Improvement Projects
Tenant improvement projects require storefront glazing that fits the building, tenant design, construction schedule, and existing site conditions. Whether the project involves a new retail build-out, office renovation, restaurant remodel, commercial entrance upgrade, or existing storefront replacement, the glazing scope should be coordinated with the rest of the construction project.
Glazenix LLC provides commercial storefront glass, aluminum storefront systems, commercial glass doors, storefront windows, and glazing solutions for tenant improvements and commercial renovations throughout Seattle and Western Washington.
If you are a general contractor, builder, architect, developer, or property owner planning a tenant improvement project, contact Glazenix to discuss your storefront and commercial glazing requirements.
Need commercial storefront glass for a tenant improvement project? Contact Glazenix LLC to discuss your project scope.
Related Glazenix Resources:
- Commercial Storefront Systems & Glass
- Commercial Glass for Contractors
- Commercial Glass for Builders
- Commercial Renovation Glass & Glazing
- Glass Doors & Glass Entrances