Business Details
33 Years
experience
Custom Wood Windows & Doors for Northeast Architecture
Since 1993, Green Mountain Window has specialized in crafting high-performance wood windows and doors that harmonize traditional Northeastern architectural details with modern energy efficiency. Our Vermont-based facility maintains full control over the manufacturing process, from producing warm-edge insulated glass to hand-finishing each unit with precision. With two distinct product linesthe value-driven Classic Series and the premium Milestone Serieswe address diverse needs while maintaining industry-leading thermal performance.Our proprietary ThermalScreen technology revolutionizes energy savings by integrating low-E glass into removable screen systems, offering historic aesthetics without compromising sustainability. Backed by decades of regional expertise, we serve architects, builders, and homeowners who demand both visual authenticity and technical excellence in their projects.
Services
Custom Wood Windows
Historic Window Replication
Energy-Efficient Doors
ThermalScreen Installation
Egress Window Solutions
Details
- Year established: 1993
Highlights and features
- We've specialized in Northeast-specific window design since 1993
- Our in-house manufacturing controls quality from glass production to finish
- ThermalScreen technology provides historic aesthetics with triple-glazed efficiency
- Milestone Series windows exceed industry standards for air infiltration resistance
- Classic Series offers premium features at cost-effective pricing
Services
Classic Series Windows
Our original product line combines traditional craftsmanship with modern efficiency. These windows feature mortised-and-tenoned joints for structural integrity, block-and-tackle tilt balances for smooth operation, and colonial-style detailing. Available in wood or vinyl-clad options, they deliver premium performance at cost-effective pricing for Northeast homeowners seeking authentic aesthetics without compromising energy efficiency.
Milestone Series Windows
Top-tier windows engineered for maximum thermal performance and historic accuracy. Features include concealed balance systems, hidden tilt-in latches, and premium wood finishes that meet or exceed industry standards for air infiltration resistance. Designed for discerning clients who require both architectural authenticity and cutting-edge energy efficiency in demanding climate conditions.
ThermalScreen Technology
Innovative screen-integrated glass system that transforms existing windows into high-performance units. Uses low-E glass panels within Accoya wood frames to achieve U-values as low as .19, reducing energy loss by up to 63% compared to standard insulated glass. Maintains traditional appearance while providing modern thermal performance without full window replacement.
Custom Door Solutions
Craftsmen-built doors blending historic design elements with modern functionality. Options include wood sills, 5/8" muntins, and sand-cast bronze hardware. Available in single swing, French, patio, and slider configurations with matching window casing and divided-light designs for cohesive architectural styling.
Egress Window Systems
Code-compliant windows designed for basement egress requirements. Maintains traditional double-hung appearance while meeting strict size regulations (minimum 2'2" x 4'0" opening). Features offset sash planes for authentic look and optional security locks, available in both new construction and replacement unit configurations.
Questions
What makes ThermalScreen different from traditional storm windows?
ThermalScreen integrates low-E glass panels into removable screens, providing better energy efficiency than triple-glazed windows while maintaining historic aesthetics.
Can ThermalScreen be installed on existing windows?
Yes, ThermalScreen retrofits existing single or double-glazed windows without requiring replacement, improving U-values to as low as .19 when installed on new windows.
What wood species options are available for custom windows?
We offer preservative-treated pine, mahogany, cedar, oak, and Accoya wood with 50-year durability warranties for both windows and doors.
How do Milestone Series windows achieve superior thermal performance?
Milestone windows use warm-edge spacers, argon/krypton gas fills, and concealed balance systems to achieve industry-leading air infiltration ratings and U-values.
Are Classic Series windows suitable for historic renovations?
Yes, Classic Series windows offer traditional colonial features like mortised joints and narrow muntins while providing modern energy efficiency at value pricing.
Reviews (1)
Debbie Arend
Oct 27, 2021
Report
This window company, in addition to poor window quality, has even poorer customer service. We gave up trying to seek a resolution after 4 years.
