Business Details
50+ Years
experience
Custom Windows and Doors for Alaska's Climate
Capitol Glass has been serving Alaskans since 1951, specializing in custom-manufactured windows and doors designed to withstand extreme northern climates. Our Northerm product line combines decades of engineering expertise with advanced materials to deliver superior insulation, noise reduction, and structural integrity. As Alaska's only NFRC-certified insulated glass manufacturer, we maintain rigorous quality standards through independent laboratory testing. Our commitment to innovation is demonstrated through proprietary technologies like fusion-welded frames, argon gas insulation, and multi-chamber profiles that achieve R-values comparable to building walls.With a 20-year warranty covering frame and IG failure, including labor for the first decade, we stand behind our products' durability in subzero temperatures and high-wind conditions. Our team provides rapid installation services with glass orders shipping within two days, serving both residential and commercial clients across Alaska.
Services
Custom Windows
Fiberglass Doors
Shower Enclosures
Insulated Glass Units
Triple-Pane Windows
Quad-Pane Windows
Window Replacement
Commercial Glass
Glass Repair
Energy-Efficient Solutions
Details
- Year established: 1951
Highlights and features
- 70+ years of Alaska-specific window manufacturing expertise
- Only NFRC-certified glass manufacturer in Alaska
- Custom-engineered solutions for subzero temperatures and 165mph winds
- 20-year warranty with first decade labor coverage
- Two-day glass order fulfillment with local installation teams
Associations and certifications
- National Fenestration Rating Council (NFRC)
- ENERGY STAR
Services
Custom Windows
Our custom windows feature fusion-welded UPVC frames and multi-chamber profiles engineered for Alaska's extreme climate. Available in double-, triple-, and quad-pane configurations with argon gas insulation, these windows achieve R-values up to 8.33 while withstanding 165mph winds. The proprietary design includes rubber gaskets instead of tape seals and foam spacers to prevent thermal transfer, providing superior energy efficiency and noise reduction compared to conventional windows.
Fiberglass Doors
Codel fiberglass doors utilize Hydroshield Technology with composite stiles and rails to prevent moisture intrusion. These maintenance-free doors feature commercial ball-bearing hinges, adjustable door sweeps, and ENERGY STAR-rated insulation with polyurethane foam offering six times the R-value of wood. The WeatherGuard composite frame system ensures durability in harsh weather conditions while maintaining aesthetic flexibility through multiple finish options.
Shower Enclosures
Agalite shower enclosures combine tempered glass with heavy-gauge aluminum framing for long-term durability. Available in seven design series with customizable options including ShowerGuard glass, tinted/patterned glass, and decorative hardware. The systems feature a limited lifetime warranty and include specialized seals to prevent water infiltration, with configurations ranging from DIY kits to luxury custom installations.
Insulated Glass Units
NFRC-certified insulated glass units manufactured with Cardinal and Hartung glass materials. Each unit undergoes rigorous independent testing for air/water infiltration resistance and thermal performance. Available in various configurations with foam spacers and argon gas fills, these units maintain structural integrity through temperature extremes while achieving U-factors as low as .12 (R8.33) in specialty applications.
Triple-Pane Windows
Triple-pane systems with 1-3/8" glazing pockets create optimal airspace for thermal and acoustic insulation. Engineered with multi-point locking systems and reinforced frames, these windows achieve exceptional energy efficiency while maintaining structural strength. Available in multiple operating styles including casement, awning, and picture windows, specifically designed for cold climate performance with R-values exceeding standard building requirements.
Questions
What makes Capitol Glass windows suitable for Alaska's climate?
Our windows feature fusion-welded frames, argon gas insulation, and rubber gaskets designed to withstand subzero temperatures and 165mph winds while maintaining energy efficiency.
Do you offer energy-efficient window options?
Yes, our triple- and quad-pane windows achieve R-values up to 8.33 with multi-point locking systems and foam spacer technology for superior thermal performance.
Are your fiberglass doors maintenance-free?
Codel fiberglass doors with Hydroshield Technology resist splintering, denting, and rusting while maintaining structural integrity in extreme weather conditions.
How quickly can you install replacement windows?
We typically ship glass orders within two days and have local installation teams available for fast turnaround on residential and commercial projects.
What warranty coverage do you provide?
We offer a 20-year warranty against frame and IG failure, including labor coverage for the first 10 years with certain limitations.
Can you create custom window shapes?
All windows are custom-manufactured to fit unique architectural requirements, including specialty shapes and sizes not available through standard retailers.
Reviews (4)
Rachelle
Sep 05, 2021
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Critical: Professionalism RUDEST sales person I have ever dealt with. Too busy to help people don't bother calling.
Hazel Sunshine Hall
Aug 12, 2021
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Excellent efficient service and their prices are far better than neighbors windows and door across the street. The place across the street quoted me three times more and twice as long to get a window fixed. Highly recommended.
Lynn Hanes
Jul 25, 2021
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Had a warranty job today and the gentleman that came out to do it came ready to work. I'd ask for him if I need another warranty done.
Touchee Yang
Jul 03, 2021
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Business is very unresponsive. Called Mike about warrantee work since I thought they stand behind their products. Left two voicemail with no response. After two weeks I called once again, Melissa and Jessica forward me to someone but again no one answered and it sent me to voicemail. This business seems to give you the run around. I do not recommend this business.
