Frequently Asked Questions

Original masonry and uneven openings in Dubuque's historic building stock rarely match modern off-the-shelf storefront dimensions. Standard systems require field improvisation that compromises fit and weatherproofing. Custom aluminum fabrication sizes framing to actual openings measured on-site, eliminating gaps and ensuring proper sealing against river valley winters.

Temperature swings stress door frames and closers seasonally, causing early hardware failure when frames aren't properly shimmed. Threshold sealing prevents moisture infiltration that freezes and cracks frames during river valley winters. Proper installation accounts for seasonal expansion and contraction that Midwest buildings experience repeatedly.

Hard water from the Mississippi watershed deposits minerals that clog tracks and degrade seals faster than in soft-water areas. Standard builder-grade units use materials that corrode quickly under these conditions. Track and seal selection designed for hard water resistance extends functional life significantly in Asbury and Key West neighborhoods.

Fogging between panes indicates failed IGU seals, not necessarily frame damage. Diagnosing seal failure versus structural damage before ordering prevents unnecessary full-unit replacements. Older Dubuque-area homes often need only glass replacement when freeze-thaw cycles crack seals but leave frames intact, saving replacement costs.

In-house fabrication eliminates waiting on special orders for non-standard openings common in Downtown Dubuque and the Julien Dubuque District. Framing is cut to measured dimensions without field modifications that compromise structural integrity. Turnaround is faster because fabrication happens locally rather than shipping from regional suppliers.

Hardware ratings specify cycle counts and weight capacities that indicate durability under continuous use. High-traffic Dubuque commercial entries need closers and hinges rated for Midwest climate stress and heavy daily cycles. Matching hardware to actual door weight, traffic volume, and ADA compliance requirements prevents premature failure.

Non-standard window sizes in older housing stock don't match retail screen dimensions. Custom-cut mesh and frame stock accommodate odd measurements common in Sageville and East Dubuque neighborhoods. In-house fabrication enables same-day or next-day turnaround instead of ordering special sizes that take weeks.

Repair evaluates whether IGU seals or frames have failed. If seals cracked but frames remain structurally sound, only the glass unit needs replacement. Full replacement becomes necessary when freeze-thaw damage warps frames beyond repair or when energy efficiency upgrades justify new units.

ADA compliance requires specific handle heights, operating force limits, and clearance dimensions for accessible entries. Commercial buildings open to the public must meet these standards regardless of location. Hardware selection considers both code compliance and functional performance under local traffic and climate conditions.

Humid summers accelerate mesh deterioration and frame corrosion, while freeze-thaw cycles warp frames each spring. Screens experience more stress in river valley climates than drier regions. Material selection and frame construction designed for these conditions extend replacement intervals compared to standard retail screens.

Frameless doors minimize metal contact points where mineral deposits accumulate, reducing visible buildup. Semi-frameless units use frames at stress points for stability but expose more surface area to hard water staining. Track design and seal material matter more than frame style when water quality accelerates corrosion.

Custom aluminum fabrication and glass handling require specialized equipment and training that general contractors typically lack. Storefront installation involves structural anchoring, thermal breaks, and weatherproofing techniques specific to curtain wall systems. Improper installation compromises building envelope performance and creates long-term water infiltration issues.

Dubuque Glass supplies and installs aluminum, steel, and wood commercial doors for businesses across the tri-state area. Custom designs, sizes, and colors are available for aluminum entrance doors. Each door type suits different traffic levels, security needs, and building aesthetics.

A removable mullion is a center post for paired commercial doors that removes with a single key turn and snaps back without a key. Standard aluminum door pairs leak air and water around traditional mullions. Greenfield's removable mullion design seals properly and allows quick removal for large deliveries or egress.

FRP doors are fiberglass reinforced plastic doors built for environments where moisture, chemicals, or heavy use would degrade steel or wood quickly. They resist corrosion and denting better than hollow metal alternatives. Commercial kitchens, food processing facilities, and institutional buildings commonly benefit from FRP door installations.

Door material should match your traffic volume, security requirements, and environmental exposure. Steel doors offer strength for high-security entries, aluminum works well for glass storefront systems, and wood suits interior or aesthetic-focused applications. Climate exposure and maintenance expectations also factor heavily into the right choice for Dubuque-area buildings.

Commercial doors involve precise structural anchoring, frame shimming, threshold sealing, and hardware matching that affect long-term performance and code compliance. Improper installation leads to door misalignment, hardware failures, and energy loss. Professional installation ensures the entire system — frame, glass, and hardware — operates as one cohesive unit.

Yes, most commercial door closers have adjustable spring tension and closing speed valves that allow fine-tuning after installation. Seasonal temperature changes in the Midwest can affect how a closer performs, so minor adjustments are normal. A closer that won't hold a setting, however, typically indicates it's undersized for the door or has failed internally.

Custom aluminum doors are fabricated to your exact opening dimensions, eliminating the gaps and fit compromises that come with stock sizing. They're available in a range of colors and designs to match your building's exterior. Long-term, a properly fitted door seals better against Iowa winters and requires fewer repairs than a forced-fit standard unit.

Commercial glass is typically thicker than residential glass and must meet stricter industry standards for safety and structural performance. Large commercial glass panes serve as doors, windows, or structural walls, requiring tempered or laminated safety glass in many applications. Production and installation must comply with building codes to protect occupants.

Minor issues like hardware wear, closer tension loss, or seal degradation typically call for repair rather than replacement. Full replacement makes sense when frames are warped beyond adjustment, glass is cracked or compromised, or the door no longer meets current code and security requirements. An onsite evaluation identifies which path protects your investment best.

A complete commercial entrance installation covers the door frame, glazing, threshold, weatherstripping, closers, locksets, and any panic or exit hardware. Each component must be matched to the door's weight and the building's traffic and security needs. Overlooking any element — especially weatherstripping and thresholds — leads to early performance failures in Midwest climates.