Vacuum Glazing UK has announced a new 25-year manufacturer warranty for LandVac vacuum-insulated glazing (VIG), setting a new benchmark for longevity and performance in the glazing industry. This is the longest vacuum glazing warranty ever offered in the UK.
LandVac VIG combines ultra-slim dimensions with exceptional thermal performance. Its centre-pane U-value is just 0.34 W/m²K, independently certified by ift Rosenheim, making it one of the highest-performing glazing products on the market.
Unlike standard guarantees, LandVac’s 25-year warranty is a contractual commitment that is fully transferable and provided at no extra cost. It remains valid even if the glass changes ownership, offering long-term peace of mind for homeowners, architects and developers.
LandVac’s durability is backed by over a decade of laboratory and field testing. This includes:
- Xenon arc accelerated ageing: 22,500 hours under simulated sunlight exposure, equal to 25 years of weathering
- 10,000 temperature cycles: performance remained stable between 25 °C and 75 °C
- Outdoor field testing: over 100 units installed in natural conditions since 2012 have shown no drop in vacuum pressure
With a total thickness of just 8.3 mm, LandVac preserves the sightlines of heritage windows while dramatically improving energy efficiency. This has made it a popular solution for conservation areas, listed buildings and low-carbon retrofits.
“We’ve seen too many projects compromised by glass that fails within a few years,” said Andrew Madge, Director at Vacuum Glazing UK. “This 25-year warranty reinforces what our testing has proven for years: LandVac delivers performance that lasts.”
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