Every VIG Horizon panel is manufactured on Glaston tempering lines, the world standard for flat glass precision. Glass flatness is not a secondary specification. For vacuum insulated glass, it is the fundamental enabling requirement.
Glaston did not start as a glass company. It started as a forest and paper operation in the Finnish rapids country — and through 155 years of continuous reinvention, became the company that sets the precision standard for glass tempering on every continent.
Hammarén & Comp established operations at the Kyröskoski rapids in central Finland, initially focused on forest industry and paper production. The foundation that would become Glaston was built on Finnish engineering precision and a culture of bold industrial development.
Origines · Kyröskoski, FinlandeThe company begins exporting products beyond Finland's borders — establishing a pattern of international industrial reach that would define the company across the following century. Innovation and internationalization become permanent characteristics.
Jalon · Croissance par les exportationsAcquisitions focused increasingly on glass processing technology. The company begins specialising in flat tempering technology and its development — the discipline that would become its global calling card. The transformation from diversified industrial to specialist glass technology accelerates.
Virage stratégiqueAfter two decades of transformation, Glaston Corporation is formally constituted — specialising exclusively in glass processing technologies. Listed on Nasdaq Helsinki (GLA1V). Glaston organises the Glass Performance Days (GPD) conference, the industry's leading international technical forum.
Entreprise · Nasdaq Helsinki · GLA1VGlaston acquires Bystronic glass, the Swiss-German glass processing company — further extending its capabilities across the full glass processing value chain. Glaston's technology portfolio now covers tempering, laminating, bending, and insulating glass production lines.
Acquisition · Bystronic Glass, Suisse–AllemagneIn February 2026, Glaston and Leadus formally enter into cooperation to advance vacuum insulating glass manufacturing. The partnership brings together Glaston's world-leading tempering technology and Leadus's VIG process expertise — directly enabling the glass that VIG Horizon Inc. supplies to Canadian fabricators.
Partenariat · 25 février 2026A conventional insulating glass unit tolerates small surface imperfections because the gas fill is forgiving. Vacuum insulated glass is not forgiving. The two panes are separated by only 0.2mm of vacuum — held apart by ceramic micro-dot spacers that are less than 1mm in diameter.
If the glass surface undulates by even a fraction of a millimetre across the panel area, the spacers cannot maintain uniform contact. The vacuum seal fails to distribute pressure evenly. Over time, that translates to stress concentrations, edge seal failure, and vacuum loss — destroying the unit's thermal performance permanently.
This is why Kimmo Kuusela, EVP at Glaston, stated directly in the cooperation announcement: "We are at the forefront of tempering technology, delivering world-class flatness in tempered glass. This is a key enabler for efficient and reliable VIG production."
The Glaston FC500 is the flagship flat tempering furnace, used by premium architectural glass manufacturers in over 130 countries. It is the machine that makes world-class flatness possible at industrial scale — and the platform on which Leadus produces the glass in every VIG Horizon panel.
Glaston is at the forefront of tempering technology, delivering world-class flatness in tempered glass. This is a key enabler for efficient and reliable VIG production. By bringing together Glaston's leading tempering technology and Leadus's expertise in vacuum glass processing, the companies can push the development of VIG solutions forward.
Kimmo Kuusela — EVP, Sales & Service EMEA & APAC, Glaston CorporationThe Glaston–Leadus cooperation is not aspirational — it is the production reality behind Leadus's SGCC #9744 and IGCC #6076 certifications. Every panel VIG Horizon Inc. brings to Canada was produced on this platform, and carries the full certification documentation to prove it.
A 15-year vacuum seal warranty is only credible if the glass flatness is controlled at the manufacturing stage. Glaston's iControL monitoring system verifies flatness in real time during production — the data that underpins the warranty and the TÜV Rheinland U=0.40 result.
The Glaston provenance gives architects, building scientists, and structural engineers the manufacturer pedigree to include VIG in project specifications with confidence. Not "vacuum glass from China" — Glaston-process glass on Leadus platforms, sourced through VIG Horizon Inc. in Canada.
Contact VIG Horizon Inc. for a complete specification package — including TÜV Rheinland thermal data, SGCC #9744 certificate, and CAN/CGSB 12.1-2022 compliance documentation. Bilingual English and French.