Alpen High Performance Products
Alpen High Performance Products manufactures super-insulating residential and commercial windows, doors, and insulated glass units using proprietary ThinGlass and Molecular Bond spacer technologies, serving architects, developers, homeowners, and ESCOs across all 50 U.S. states through a nationwide dealer network and direct enterprise sales.
- Company typePrivate
- Founded1986
- HeadquartersNiwot, United States
- Headcount51–100
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What Alpen High Performance Products does
Alpen High Performance Products is a U.S.-based manufacturer of super-insulating residential and commercial windows, doors, and insulated glass units (IGUs), founded in 1986 by Robert Clarke and headquartered in Louisville, Colorado with a second manufacturing facility in Vandergrift, Pennsylvania under development. The company's core technology platform is ThinGlass — ultra-thin glass (as thin as 0.5mm) adapted from smartphone and display manufacturing, combined with proprietary Molecular Bond warm-edge spacer and altitude-adjusted gas retention technology, achieving R-values up to R-15 and U-factors as low as 0.09 in triple and quad-pane configurations. The product portfolio includes two finished window/door lines (Zenith fiberglass frames up to R-10; Tyrol fiber-reinforced uPVC frames up to R-11 with European-style tilt-turn operation), the AlpenGlass IGU line sold to other window manufacturers, and the WinSert secondary glazing retrofit system. Alpen was the first North American window manufacturer to achieve dual PHIUS and PHI Passive House certification and the first North American window certified under the Living Building Challenge Declare label.
The company operates a hybrid go-to-market: a nationwide U.S. dealer network handles residential projects, while direct enterprise sales engages commercial architects, general contractors, property developers, and Energy Service Companies (ESCOs) for commercial fenestration and retrofit specifications. Pricing is quote-based and project-specific with multi-year contracts, reflecting the custom-manufacturing model. Customers span residential homeowners, high-profile commercial developments (Rocky Mountain Institute Innovation Center, Mesa Verde Visitor Center, Empire State Building), government and institutional clients (City of Boulder, Boulder Valley School District), and emerging affordable-housing channels via partnerships with Flatirons Habitat for Humanity. The company maintains 51-100 employees and has raised approximately $27.8M cumulatively, including DOE grants of $11.7M (2023-2024) supporting facility retrofits intended to create over 100 additional jobs, plus a $12.1M undisclosed round in 2024 and a $4M round from Arborview Capital in 2019. Recent strategic moves include collaborations with Corning Incorporated (Enlighten Glass IGUs, November 2025) and Deceuninck North America (Elegant window contract manufacturing, December 2025), alongside continued certification leadership (ENERGY STAR Most Efficient, 2024).
Alpen High Performance Products firmographics
Firmographics- Name
- Alpen High Performance Products
- Legal name
- Alpen High Performance Products
- Website
- https://thinkalpen.com
- Company type
- Private
- Founded year
- 1986
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Alpen High Performance Products manufactures super-insulating residential and commercial windows, doors, and insulated glass units using proprietary ThinGlass and Molecular Bond spacer technologies, serving architects, developers, homeowners, and ESCOs across all 50 U.S. states through a nationwide dealer network and direct enterprise sales.
- Ownership category
- akta.pro rank
Alpen High Performance Products industry classification
Industry- Product category
- High-Performance Windows and Doors
- NAICS
- Glass and Glass Product Manufacturing (3272)
- SIC
- Glass Products, Made Of Purchased Glass (3231)
- akta.pro primary industry
- Windows (IMADAIAC)
- akta.pro secondary industry
- Low‑E, Solar Control & Energy-Efficient Coated Glass (IMADAHAF)
Keywords
Where Alpen High Performance Products is headquartered
LocationHeadquarters
- HQ city
- Niwot
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Alpen High Performance Products business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Windows and Doors Sales: Custom-manufactured residential and commercial windows and doors sold through dealer network and direct project engagement. Products include fiberglass (Zenith series) and fiber-reinforced uPVC (Tyrol series) frames with advanced glazing. One-time hardware sales model with varying project sizes.
- Insulated Glass Units (IGUs): AlpenGlass thin triple and quad-pane IGUs sold to other window manufacturers, glazing contractors, and architects seeking highest energy efficiency standards. Manufactured in automated production processes with DOE support.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom window and door solutions with project-specific pricing |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Alpen High Performance Products product offering
Product offeringCore offering
Alpen High Performance Products manufactures custom, super-insulating residential and commercial windows, doors, and architectural glass. The company produces two primary product lines (Zenith fiberglass and Tyrol fiber-reinforced uPVC) along with AlpenGlass thin triple and quad-pane insulated glass units and WinSert secondary glazing systems for retrofit applications, serving homeowners, architects, builders, and other window manufacturers across the U.S.
Product overview
Alpen High Performance Products is a manufacturer of high-performance windows, doors, and insulated glass units for residential and commercial applications. The portfolio includes two primary window/door product lines: Zenith (fiberglass frames with North American styling, up to R-10) and Tyrol (fiberglass-reinforced uPVC with European-style tilt-turn operation, up to R-11). Both lines feature Alpen's proprietary ThinGlass technology in triple and quad-pane configurations. Supporting products include AlpenGlass insulated glass units sold to other window manufacturers, and WinSert secondary glazing for retrofit applications. The company serves architects, builders, commercial developers, and homeowners through an expansive US dealer network.
Differentiator
Problem solved
Functional benefit
Brands
- Zenith Series: Fiberglass windows and doors with North American outswing functionality, achieving up to R-10 rating.
- Tyrol Series
- AlpenGlass
- WinSert
Products and services
- Zenith Series Windows
Quantifiable outcome
- R-values up to R-15 with thin glass technology
- +6 more outcomes
Companies that use Alpen High Performance Products
Customer profileNamed customers8 records
Segments5 records
Ideal customer profiles4 records
Alpen High Performance Products technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
Feature5 records
Alpen High Performance Products partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered minor, supporting and core.
- Saint-GobainminorBoth Alpen and Saint-Gobain identified as key companies actively innovating and expanding market presence in the building envelope retrofit market through acquisitions and new product launches.
- Flatirons Habitat for HumanitysupportingAlpen partnered with Flatirons Habitat for Humanity and Boulder Valley School District for the Ponderosa Community Stabilization Project. The initiative builds affordable, energy-efficient modular homes at the BoulderMOD factory for Boulder residents displaced by the 2013 flood. Alpen provides thin triple glass windows for the homes which are constructed by high school students in BVSD's APEX program.
- Boulder Valley School DistrictsupportingBVSD partnership in Project Ponderosa where high school students in the APEX high-performance building program construct affordable homes featuring Alpen windows, providing sweat-equity homeowners with affordable ownership options.
- Deceuninck North AmericacoreDeceuninck North America partnered with Alpen for production of its European-style Elegant window series. Alpen manufactures the products at its Louisville, Colorado facility. The Elegant platform offers energy-efficient windows with slim profiles, thermal performance with U-values as low as 0.09, and support for large glass expanses. The collaboration aims to accelerate commercialization of these products in the North American market as part of Deceuninck's long-term growth strategy.
- Corning IncorporatedcoreAlpen announced collaboration with Corning Incorporated to develop advanced insulated glass units using Corning's Enlighten Glass. The partnership aims to improve the efficiency, strength, and lightness of building windows in the U.S. market through combined expertise in glass technology.
- Lawrence Berkeley National LabsupportingAlpenGlass technology developed in collaboration with Lawrence Berkeley National Lab. Low-emissivity coatings developed with DOE and LBNL from 1977-1983 paved the way for low-e coatings on thin films and glass.
Scale indicators7 records
Recent moves8 records
Expansion highlights6 records
Alpen High Performance Products competitors and assessment
Company assessmentDirect peers
- Zola Windows: U.S. manufacturer of Passive House-certified windows and doors with European-style tilt-turn operation, directly comparable to Alpen's Tyrol and Zenith lines on thermal performance and target customer.
- Cascadia Windows & Doors: North American manufacturer of fiberglass high-performance windows for Passive House, Net Zero, and deep-energy-retrofit projects — overlapping directly with Alpen's Zenith fiberglass line and PHIUS-certified positioning.
- Intus Windows: European-style uPVC and timber-aluminum high-performance windows with triple glazing, serving the U.S. Passive House and premium retrofit market — comparable to Alpen's Tyrol tilt-turn offering.
- Serious Windows: U.S. manufacturer of energy-efficient fiberglass windows and doors targeting Passive House, LEED, and Net Zero projects, with similar specification-driven GTM and architectural channel focus.
Emerging players
- Passive House Supply: Specialist distributor and assembler of Passive House-certified windows and components in North America — overlaps with Alpen on the PHIUS-certified product category but operates primarily as a channel partner rather than manufacturer.
Broad incumbents
- Marvin Windows and Doors: Large established U.S. premium window and door manufacturer with a wide product range including high-performance lines (e.g., Elevate) — competes with Alpen in the premium commercial and custom residential segments with greater scale and dealer reach.
- Pella Corporation: Major U.S. window and door manufacturer with broad product portfolio across price tiers; overlaps with Alpen on energy-efficient and commercial fenestration but competes primarily on volume and dealer breadth.
- Andersen Corporation: Largest U.S. window and door manufacturer with multiple brands (Andersen, Renewal by Andersen, MQ) — provides broad competitive pressure across residential and commercial fenestration, including high-performance composite and Fibrex lines.
- Cardinal Glass Industries: Major U.S. manufacturer of insulated glass units and advanced glazing components — directly comparable to AlpenGlass on IGU products sold to window manufacturers and glazing contractors.
- Saint-Gobain: Global building products and architectural glass giant (including SageGlass, Vetrotech, and CertainTeed) — explicitly identified alongside Alpen as a key player in the building envelope retrofit market and a potential competitor across glazing and high-performance windows.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Alpen High Performance Products social profiles
Digital presenceAlpen High Performance Products compliance and trust
Trust signalCompliance6 records
Alpen High Performance Products financial estimates
Financial estimateRevenue estimate
Valuation estimate
Alpen High Performance Products leadership team
Management profileNumber of profiles
Profiles3 records
Alpen High Performance Products funding detail
Funding detailFunding overview
Funding rounds5 records
Investors3 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Alpen High Performance Products M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Alpen High Performance Products
What does Alpen High Performance Products do?
Alpen High Performance Products manufactures custom, super-insulating residential and commercial windows, doors, and architectural glass. The company produces two primary product lines (Zenith fiberglass and Tyrol fiber-reinforced uPVC) along with AlpenGlass thin triple and quad-pane insulated glass units and WinSert secondary glazing systems for retrofit applications, serving homeowners, architects, builders, and other window manufacturers across the U.S.
Is Alpen High Performance Products a public or private company?
Alpen High Performance Products is a private company. It is classified as venture growth investor backed and is currently operating.
When was Alpen High Performance Products founded?
Alpen High Performance Products was founded in 1986. It employs 51 to 100 people.
Where is Alpen High Performance Products based?
Alpen High Performance Products is headquartered in Niwot, United States, in the North America region.
How does Alpen High Performance Products make money?
Two revenue lines are on record. Windows and Doors Sales are the primary driver. The others are insulated Glass Units (IGUs).
Who are Alpen High Performance Products's main competitors?
Direct peers on record are Zola Windows, Cascadia Windows & Doors, Intus Windows and Serious Windows. Passive House Supply is listed as an emerging player. Broad incumbents are Marvin Windows and Doors, Pella Corporation, Andersen Corporation, Cardinal Glass Industries and Saint-Gobain.
Does Alpen High Performance Products have an API?
No public API is recorded for Alpen High Performance Products.
What industry is Alpen High Performance Products in?
Alpen High Performance Products's product category is High-Performance Windows and Doors. Its primary akta.pro industry code is IMADAIAC, Windows, with a secondary code of IMADAHAF, Low‑E, Solar Control & Energy-Efficient Coated Glass. Its NAICS code is 3272 and its SIC code is 3231.