GLASSX

What GLASSX does

GLASSX AG is a Zürich-based, privately held specialty building products company (founded 2002, market entry 2004) that develops and markets façade elements with proprietary optical and thermal characteristics for energy-efficient construction. The company operates a small team of 1-10 employees and is registered as glassX AG at Seefeldstrasse 224, Zürich.

Its technology portfolio comprises three interconnected platforms: Phase Change Material (PCM) façade products — including the GLASSXstore, GLASSXcomfort / GlassXecrystal, and GLASSXprism lines — that embed a translucent PCM layer capable of providing thermal mass equivalent to a 25cm concrete wall at 15mm thickness; the Fluidglass system, in which liquid circulates between transparent panes to convert passive façades into active solar thermal collectors and HVAC replacements; and Vakuumglas vacuum glazing, which provides high insulation and soundproofing in slim profiles. These technologies were developed through long-term research cooperation with ETH Zürich, EMPA Dübendorf, and Fraunhofer Institut für solare Energiesysteme, and are protected by patents.

GLASSX generates revenue primarily through B2B project sales of custom-engineered façade solutions, sold either directly to building owners and property developers or indirectly through architects and façade builders acting as specification channels. Pricing is project-specific and not publicly disclosed. Reference projects span residential, commercial, educational, and government buildings across Switzerland, Germany, and Italy, with the most recent deployment being the Edith-Haberland-Wagner Stiftung warehouse conversion in München (2023-25). Marketing is primarily content-driven via the company website (glassx.ch) and downloadable technical brochures.

Name

GLASSX

Legal name

glassX AG

Website

https://glassx.ch

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

1–10 employees

Short description

GLASSX AG is a Zürich-based specialty manufacturer of patented PCM, Fluidglass, and vacuum-glazed façade products, serving building owners, property developers, architects, and façade builders across the DACH region with energy-efficient, custom-engineered building envelope solutions.

Ownership category

akta.pro rank

Product category

Architectural Façade & Glazing Products

NAICS

Flat Glass Manufacturing (327211), Glass and Glass Product Manufacturing (32721), Glass Product Manufacturing Made of Purchased Glass (327215)

SIC

Flat Glass (3211), Glass Products, Made Of Purchased Glass (3231)

akta.pro primary industry

Windows (IMADAIAC)

akta.pro secondary industries

Low‑E, Solar Control & Energy-Efficient Coated Glass (IMADAHAF), Skylights, Roof Glazing & Glass Roofing Systems (IMADAHAK)

Keywords

• Facade glazing systems
• Phase change materials
• Vacuum glass windows
• Solar facade solutions
• Thermal insulation products

Headquarters

HQ city

Zürich

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Technology or R&D, Marketing or Sales, Personnel

Revenue model

1. Facade Product Sales: GLASSX generates revenue through the sale of proprietary facade products including vacuum glass, PCM facade products, and fluidglass systems. Products are sold directly to building owners, property developers, and through architects and facade builders.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

GLASSX develops and markets proprietary building facade products that combine translucency with deep U-values, variable g-values, and high thermal mass. The portfolio comprises three interconnected product families: Vakuumglas (vacuum glazing for slim-profile insulation), PCM Fassadenprodukte (phase change material facade products including GLASSX®store, GLASSX®comfort, GlassX®crystal, and GLASSX®prism), and Fluidglass (a liquid-circulating active solar thermal facade system). These products are sold to building owners, property developers, architects, and facade construction firms for new builds and renovations seeking to minimize energy consumption and HVAC investment.

Product overview

GLASSX AG develops and markets facade products based on unique optical and thermal properties. The product portfolio consists of three interconnected core technologies: Vacuum Glass (Vakuumglas) for superior insulation in slim profiles, PCM Facade Products (Phasen-Wechsel-Material) including GLASSX®store, GLASSX®comfort/GlassX®crystal, and GLASSX®prism for thermal mass and daylight management, and Fluidglass as an active solar thermal collector system. Together, these products enable buildings that are bright and warm in winter like a conservatory while remaining cool in summer like a solid structure, reducing heating and cooling costs to a minimum.

Differentiator

Problem solved

Functional benefit

Brands

• Fluidglass: A facade system where liquid circulates between transparent window panes, converting passive facades into active collectors that respond to changing interior and exterior environmental conditions. Functions as a fully transparent solar thermal collector, transparent insulation layer, solar heat transmission controller, and replaces conventional HVAC components.
• GLASSX®store
• GLASSX®comfort
• GlassX®crystal
• GLASSX®prism
• Vakuumglas

Products and services

• Fluidglass A facade system where liquid circulates between transparent window panes, converting passive facades into active solar thermal collectors. Functions as a fully transparent solar thermal collector, transparent insulation layer, solar radiation transmission controller, and a replacement for conventional HVAC components such as cooling and heating panels. Sold to building owners, architects, and facade builders for energy-efficient projects.
• Vakuumglas (Vacuum Glass) Innovative window solution combining outstanding thermal insulation with slim design. A vacuum between glass panes nearly eliminates heat exchange, maximizing energy efficiency while offering excellent insulation values and optimal soundproofing at minimal thickness and weight. Ideal for new construction and renovations and demanding architectural projects.
• PCM Fassadenprodukte (PCM Facade Products) Facade products utilizing Phase-Change Material technology embedded in glazing. A 15mm layer of light-transmitting PCM can absorb as much heat as a 25cm concrete wall, enabling translucent facade elements to replace solid exterior walls while maximizing daylight and preventing summer overheating. The line includes GLASSX®store (interior PCM element with optional printed glasses), GLASSX®comfort (complete facade element with optional shading), GlassX®crystal (complete PCM facade element), and GLASSX®prism (prism-based daylight redirection).

Quantifiable outcome

• Primary energy consumption 60% below EnEV 2007 reference building (e% westlich Albertinum project)

Named customers11 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core.

• ETH Zürich (Swiss Federal Institute of Technology)coreStrategic or Co-development PartnerResearch cooperation partner for the development of solar facade systems. Years of joint research work leading to patented, market-ready products.
• EMPA Dübendorf (Swiss Federal Laboratories for Materials Science and Technology)coreStrategic or Co-development PartnerResearch partner contributing to the development of patented facade products through materials science research and development.
• Fraunhofer Institut für solare EnergiesystemecoreStrategic or Co-development PartnerGerman research partner for solar energy systems, contributing to the development of innovative facade technologies through applied research cooperation.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Pilkington (NSG Group): Long-established flat-glass and architectural glass producer with a wide range of high-performance, low-E, and solar-control products for facade applications. A direct specification competitor to GLASSX in the architectural glazing category.
• Guardian Glass: Global manufacturer of float, coated, and high-performance architectural glass sold into commercial facade and window markets. Overlaps with GLASSX in the architectural glazing specification channel, particularly for energy-efficient facades.
• Nippon Sheet Glass (NSG) / Pilkington: Parent group of Pilkington and global flat-glass producer offering energy-efficient architectural glazing products. Comparable in architectural facade glazing category; broader scale, deeper capital base, and global distribution than GLASSX.
• Cardinal Glass Industries: US-based privately held manufacturer of architectural flat glass and high-performance coated glazing. Comparable in building-envelope application and specification-driven sales, though focused on the North American market.
• Schott AG: German specialty glass manufacturer including high-performance architectural glazing, vacuum-insulated glass (SCHOTT VIG), and facade glass technologies. Directly comparable in vacuum glazing R&D and European facade customer base; much larger scale and broader product portfolio.
• AGC Glass Europe (formerly Glaverbel): Major European flat-glass producer with a strong DACH presence, offering coated, low-E, and solar-control glass for architectural facades. Comparable to GLASSX's glazing products in customer base and specification-driven sales, but at vastly greater scale and broader product range.
• Vitro Architectural Glass: Major North American producer of architectural flat glass and high-performance coated glazing for commercial facades. Comparable end-use (energy-efficient building envelopes) and overlapping specification channel, though focused primarily on the Americas market.
• Saint-Gobain Glass: One of the world's largest flat-glass and high-performance glazing manufacturers, offering low-E, solar-control, and acoustic glazing for facades and windows. Competes with GLASSX in the same specification channel (architects and facade builders) but across a much broader portfolio and global footprint.

Direct peers

• Sedak GmbH & Co. KG: German manufacturer of large-format, high-insulation insulating glass and specialty facade glazing, including oversize vacuum-insulated glass units. Closely comparable to GLASSX in DACH-based, custom/specialty architectural glass and high-performance facade applications.
• Okalux GmbH: German manufacturer of light-transmitting facade and roof glazing systems, including PCM-filled glass units for thermal storage. Highly comparable to GLASSX's PCM facade products in target market (architects/specifiers), technology (translucent phase-change elements in glazing), and application (sustainable building envelopes).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks1 record

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/glassx-ag

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GLASSX