Business Details
50+ Years
experience
Expert Glass & Window Solutions Designed for Alaska's Climate
Since 1951, Capitol Glass has specialized in crafting high-performance glass and window solutions tailored to Alaska's extreme climate. As the only nationally-certified insulated glass and window manufacturer in the state, we combine decades of expertise with cutting-edge technology to address the unique challenges posed by subzero temperatures and high winds. Our proprietary window designs feature advanced insulation systems, fusion-welded frames for structural integrity, and argon gas fills to maximize energy efficiency. We stand behind our products with a 20-year warranty covering both frame and insulated glass unit (IGU) failures, including labor replacement during the first decade. Our engineering team has developed windows capable of withstanding wind loads up to 165 mph, achieving U-factors as low as .12 (R-value R8.33), and eliminating thermal bridging through innovative foam spacer technology.We maintain direct partnerships with major U.S. glass suppliers like Cardinal and Hartung, while operating a two-day turnaround manufacturing process for custom IGUs. Our products span residential, commercial, and architectural applications, including ENERGY STAR-rated fiberglass doors with composite framing systems and Agalite shower enclosures featuring tempered glass and lifetime warranties. With continuous operation since 1951, we've served generations of Alaskan homeowners while maintaining our status as the state's sole NFRC-certified glass manufacturer.
Services
Insulated Glass Units
Custom Windows
Fiberglass Doors
Shower Enclosures
Window Installation
ENERGY STAR Windows
Glass Replacement
Window Repair
Commercial Glass
Door Installation
Details
- Year established: 1951
Highlights and features
- Alaska's only NFRC-certified insulated glass and window manufacturer since 1951
- Engineered window systems with U-factors as low as .12 for extreme climate resilience
- Fusion-welded vinyl frames eliminate gaps and water infiltration versus screw-assembled competitors
- 20-year warranty covering both IG unit failure and labor replacement in first decade
- Two-day turnaround for custom-manufactured insulated glass units
Associations and certifications
- National Fenestration Rating Council
- ENERGY STAR
Services
Insulated Glass Units
We produce certified insulated glass units with foam spacers and argon gas fills that prevent thermal transfer. Our NFRC-certified manufacturing process includes rigorous testing at independent labs to ensure structural integrity and energy performance. Each unit carries a 20-year warranty covering both material failure and labor replacement during the first decade.
Custom Windows
Custom-manufactured windows featuring fusion-welded vinyl frames and multi-pane configurations up to quad-pane. Available in double, triple, and four-pane designs with glazing pockets engineered for optimal insulation. Our proprietary frame design accommodates oversized openings while maintaining structural strength against 165 mph wind loads.
Fiberglass Doors
High-impact fiberglass doors with composite framing systems that resist denting, rotting, and rusting. Hydroshield Technology prevents moisture intrusion through full-length composite stiles and rails. Available in smooth or textured finishes with commercial ball-bearing hinges and adjustable energy-efficient weatherstripping certified for extreme climates.
Shower Enclosures
Luxury shower enclosures using tempered glass and heavy-gauge aluminum extrusions from industry leader Agalite. Customizable with ShowerGuard glass, patterned options, and designer hardware. Features include lifetime warranty protection and 70 years of engineering expertise ensuring leak-proof performance with precision extrusion techniques.
Window Installation
Local installation services for all window types with emphasis on proper sealing techniques. Our certified technicians ensure optimal performance by addressing installation-specific challenges in northern climates. Completes two-day turnaround for glass orders with guaranteed labor coverage during initial warranty period.
Questions
What makes Capitol Glass windows suitable for Alaska's climate?
Our windows feature fusion-welded vinyl frames, argon gas fills, and foam spacers that withstand 165 mph winds and subzero temperatures while maintaining structural integrity.
Are Capitol Glass products certified for energy efficiency?
Yes, we're Alaska's only NFRC-certified manufacturer with ENERGY STAR-rated windows and fiberglass doors that meet strict thermal performance standards.
How long does glass manufacturing and installation take?
We offer a two-day turnaround for custom insulated glass units with local installation services available across Anchorage and northern Alaska regions.
What warranty coverage do you provide?
20-year warranty covering IG unit failure including labor replacement during first 10 years with specific restrictions applying to residential installations.
Can you create custom window designs?
Yes, we manufacture windows in any shape or size with customizable frame colors, finishes, and architectural features to match unique home designs.
What window types do you offer?
Double, triple, and quad-pane configurations in casement, sliding, awning, picture, and specialty designs engineered specifically for northern climates.
Reviews (4)
Rachelle
Sep 05, 2021
Report
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
Report
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
Report
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
Report
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.
