Business Details
50+ Years
experience
Expert Windows and Doors for Alaska's Climate
Capitol Glass has been serving Alaskans since 1951, specializing in high-quality windows, doors, and insulated glass units designed specifically for the state's extreme northern climate. As Alaska's only National Fenestration Rating Council (NFRC)-certified manufacturer, we combine decades of local expertise with advanced engineering to deliver energy-efficient solutions that withstand subzero temperatures and high winds. Our products, including Northerm windows and Codel fiberglass doors, feature superior insulation, durability, and customization options for residential and commercial applications.With a 20-year warranty on insulated glass units and a commitment to rapid serviceincluding glass orders shipped within two dayswe prioritize quality, innovation, and customer satisfaction. Our partnerships with leading suppliers like Cardinal Glass Industries ensure transparency and reliability in every product we deliver.
Services
Windows
Doors
Insulated Glass Units
Shower Enclosures
Specialty Glass
Details
- Year established: 1951
Highlights and features
- Alaska's only NFRC-certified insulated glass and window manufacturer
- Custom-engineered products for subzero temperatures and 165 mph winds
- 20-year warranty on residential insulated glass units
- Glass orders shipped within two days of placement
- Partnerships with Cardinal Glass and Hartung Glass Industries
Associations and certifications
- National Fenestration Rating Council (NFRC)
Services
Windows
Custom-manufactured windows designed for Alaska's extreme climate, including double-, triple-, and quad-pane options. Features include argon fill, rubber gaskets, and foam spacers to prevent heat transfer. Available in casement, sliding, and custom configurations for superior insulation and noise reduction.
Doors
Codel fiberglass doors with Hydroshield Technology and composite frames engineered to withstand Alaska's elements. Features include maintenance-free surfaces, commercial ball-bearing hinges, and ENERGY STAR-rated insulation. Available in smooth or textured finishes with customizable hardware and weatherproofing systems.
Insulated Glass Units
NFRC-certified insulated glass units with a 20-year warranty, manufactured to rigorous independent lab standards. Uses foam spacers and dual glazing pockets to maximize R-values. Ships within two days for residential and commercial projects requiring high-performance thermal efficiency.
Shower Enclosures
Agalite shower and bath enclosures featuring tempered glass, heavy-gauge aluminum frames, and customizable designs. Includes ShowerGuard glass options, patterned textures, and lifetime-warranty hardware. Available as DIY kits or fully custom installations for luxury bathroom upgrades.
Specialty Glass
Cut-to-size specialty glass for architectural, residential, and commercial applications. Includes tempered, tinted, and patterned options with durable hardware. Partnered with Cardinal Glass Industries to ensure material quality and traceability for projects requiring unique glazing solutions.
Questions
Are Capitol Glass products certified for quality?
Yes, we are Alaska's only NFRC-certified manufacturer, with insulated glass units tested to rigorous independent standards.
What window types do you offer for cold climates?
We provide double-, triple-, and quad-pane windows engineered specifically for Alaska's subzero temperatures and high winds.
Do your windows come with a warranty?
Our insulated glass units include a 20-year residential warranty, with some restrictions applying to specific products.
How quickly can you deliver glass orders?
Most glass orders ship within two business days of placement for fast project completion.
Can I customize window and door designs?
Yes, we offer full customization for windows, doors, and shower enclosures to meet architectural specifications and personal preferences.
