Technology Reference Projects

Proven on
4 continents.
Available in Canada.

These international projects demonstrate the real-world performance of Leadus vacuum insulated glass technology, the same certified glass VIG Horizon supplies to Canadian fabricators.

About These References

The projects on this page are completed installations using Leadus Technology vacuum insulated glass — our manufacturing partner. VIG Horizon Inc. was not involved in these projects. They are presented as technology performance references: proof that the glass we supply to Canadian fabricators has been successfully installed at scale, in heritage contexts, and in high-specification commercial applications, on multiple continents.

4
Continents
with Leadus VIG installations
4,000m²
Largest single retrofit
North America
1865
Oldest heritage building
successfully retrofitted
200m²
World's largest
single-pane VIG retrofit
North America · Best Canadian Reference
Project 01 of 04

Grant-Deneau Tower

Dayton, Ohio, USA · Residential High-Rise · Built 1969
4,000
m² VIG
installed
Energy
Star
Post-retrofit
certification
1969
Original build
year

The Grant-Deneau Tower in Dayton, Ohio is the most directly comparable VIG installation to Canadian retrofit opportunities. A residential high-rise built in 1969 — the era of single-pane curtain wall and minimal thermal performance — received a complete 4,000 m² vacuum insulated glass curtain wall retrofit using Leadus technology. The building achieved Energy Star certification post-retrofit, confirming real-world energy performance gains consistent with the certified U-values of the installed glass.

For Canadian fabricators and building owners evaluating VIG for retrofit applications, this project answers the most critical question: does it perform in the real world at scale, in a North American climate and regulatory context? The answer, confirmed by Energy Star certification, is yes.

Canadian Relevance

Canada has hundreds of 1960s–1980s residential towers facing curtain wall replacement cycles. The Grant-Deneau project demonstrates that Leadus VIG is a viable, Energy Star-certifiable solution for large-scale Canadian residential retrofit — directly applicable to buildings in Montréal, Toronto, Ottawa, Calgary, and Vancouver facing the same generation of envelope replacement decisions.

ApplicationCurtain wall retrofit · Residential high-rise
TechnologyLeadus VIG · Glaston-tempered
Scale4,000 m² — largest N. American VIG retrofit
ResultEnergy Star certified post-retrofit
Climate zoneDayton, Ohio — Zone 5 (comparable to Montréal / Toronto)
Grant-Deneau Tower, Dayton OH — 4,000 m² VIG curtain wall retrofit, Energy Star certified
⭐ Energy Star Certified Post-Retrofit
★ Best North American VIG Reference
Dayton, Ohio, USAClimate Zone 5 — directly comparable to Montréal and Toronto
German industrial heritage building, c. 1865 — Leadus VIG heritage retrofit
Heritage Reference · Est. 1865
GermanyHeritage designation with strict frame preservation requirements
🇩🇪 Germany · Heritage Restoration
Project 02 of 04

German Industrial Heritage 1865

Germany · Masonry Industrial Heritage Building · Est. 1865
1865
Original build
year
6.2mm
VIG total
thickness
100%
Original frames
preserved

A 160-year-old German masonry industrial heritage building — subject to strict German heritage preservation requirements comparable to Quebec's Loi sur le patrimoine culturel and Ontario's Heritage Act — was successfully retrofitted with Leadus VIG slim-profile glazing. The critical achievement: original sash window frame geometry was preserved entirely. No structural modification was required. No heritage designation was at risk.

German heritage designation standards require that restoration work preserve the character-defining elements of a building's windows, including frame depth, profile geometry, and visible glazing thickness. The 3TL+V+3T configuration at 6.2mm total allowed the project to meet these requirements while delivering thermal performance that single glazing could never approach.

Canadian Relevance

Quebec has over 600 classified heritage sites and thousands of designated heritage buildings requiring window preservation under strict provincial guidelines. Ontario's Heritage Act governs window treatment on thousands of listed properties in Toronto, Kingston, Ottawa, and smaller municipalities. This German heritage project is the proof-of-concept that VIG can meet the most demanding heritage preservation standards — directly applicable to Canadian designation compliance.

ApplicationHeritage restoration · Masonry heritage building
Configuration used3TL+V+3T · Slim profile · 6.2mm
Key outcome100% frame preservation · Heritage designation maintained
Heritage standardGerman Denkmalschutz (comparable to QC/ON heritage acts)
🇳🇱 Netherlands · European Heritage
Project 03 of 04

Kampen Heritage District

Kampen, Netherlands · Historic Hanseatic City · Heritage District
105
m² VIG
installed
6.2mm
Slim profile
total
✓
Heritage
board approved

Kampen is a Hanseatic city in the Netherlands with strict heritage protection covering its medieval and early-modern urban fabric — windows, facades, and street character included. The 105 m² VIG installation in this district demonstrates that vacuum insulated glass can satisfy the requirements of one of Europe's most rigorously preserved historic urban areas.

The Kampen project is particularly relevant to VIG Horizon's Quebec market, where the heritage districts of Vieux-Montréal, Vieux-Québec (UNESCO World Heritage Site), and towns throughout Laurentides and Estrie operate under comparably strict character-preservation requirements. The European heritage regulatory environment closely parallels the Quebec provincial framework.

Canadian Relevance

Vieux-Montréal is a heritage district with national historic site designation. Vieux-Québec is a UNESCO World Heritage Site. Both carry window preservation requirements that parallel European Hanseatic heritage standards. The Kampen installation demonstrates that Leadus VIG has been accepted under those standards — directly applicable to Quebec heritage authority approvals.

ApplicationHeritage district · Residential / mixed-use
Scale105 m² · European heritage approval obtained
Heritage standardDutch Monumentenzorg (comparable to Loi sur le patrimoine culturel)
Equivalent Quebec districtVieux-Montréal · Vieux-Québec (UNESCO)
Kampen Heritage District, Netherlands — Hanseatic canal buildings VIG retrofit
Kampen Heritage District, Netherlands
Add project photo here
Hanseatic Heritage District · Approved
Kampen, NetherlandsParallel heritage protection regime to Vieux-Montréal and Vieux-Québec
Regent Hotel Hong Kong — world's largest single-pane VIG retrofit, Victoria Harbour views
★ World Record — Largest Single-Pane VIG Retrofit
Hong Kong, China (SAR)Premium hospitality · World-record single-pane VIG installation
🇭🇰 Hong Kong · World Record Installation
Project 04 of 04

Regent Hotel

Hong Kong · Luxury Hospitality · Single-Pane VIG Retrofit
200
m² installed
single-pane VIG
#1
World's largest
single-pane retrofit
★★★★★
Luxury hotel
specification

The Regent Hotel Hong Kong is one of Asia's most prominent luxury hotels, with an international guest list and exacting standards for every aspect of the guest experience — including visual clarity through the glass. The 200 m² single-pane vacuum insulated glass retrofit installed here holds the record as the world's largest single-pane VIG installation.

Single-pane VIG is distinct from conventional replacement IGU: the panel replaces an existing single pane of glass without adding a second pane and sealed air gap. This approach is critical for installations where frame depth constraints or visual clarity requirements make conventional IGU impossible or aesthetically unacceptable. At 200 m², the Regent project proves that Leadus technology can deliver this at the scale and specification level demanded by the world's most prominent hospitality clients.

Canadian Relevance

Canada's hotel and institutional retrofit market includes Fairmont properties, national museum buildings, and boutique historic hotels where visual clarity and premium specification are as important as thermal performance. The Regent project demonstrates that Leadus VIG is a credible specification for premium Canadian hospitality and institutional projects — not just residential and heritage residential applications.

ApplicationSingle-pane retrofit · Luxury hospitality
Scale200 m² — world record single-pane VIG
Specification levelInternational 5-star hospitality standard
Canadian equivalentFairmont · Ritz-Carlton · Museum institutions
Canadian Reference Projects Wanted

Be VIG Horizon's first Canadian reference.

The four projects above demonstrate that Leadus vacuum insulated glass performs at scale in North America, in heritage buildings, in European regulated contexts, and in world-class commercial applications. The next page of reference projects will be in Canada — on buildings across this country that deserve the best glazing technology available. If your project is the right candidate, we want to work with you to make it the first.

Discuss Your Project → Find Your Segment

Heritage Restoration

Pre-1946 designated property where original frame preservation is required. Quebec or Ontario.

Net-Zero Certified

Passive House or Step Code 5 project targeting a certified result with VIG Horizon glass.

Premium Commercial

Hotel, institutional, or high-end commercial building where specification level matters.

Large-Scale Retrofit

Multi-unit residential or commercial curtain wall replacement on a 1960s–1980s building.

Request Specification

Ready for a
Canadian reference?

Contact VIG Horizon Inc. with your project details — province, building type, application, and estimated area — and we'll return a complete specification package within 48 hours. In English or French.

Request Spec Package → Find Your Segment