Sustainable Upgrade
Why change the whole window when you can replace just the glass to be more energy efficient?
Retrofitting with vacuum glazing is becoming an affordable way to save money on energy costs and contribute to the Carbon Net Zero 2050 goals.
Time Saving, Affordable, Sustainable Upgrade
PassivGlas™ is ideal for retrofitting, as it allows for the easy installation of affordable energy efficient glazing into your existing frames without the disruption and expense of a full window replacement.
When considering upgrading your home with thermally efficient glass, PassivGlas™ vacuum glazing will provide the best results.
Retrofitting with PassivGlas™ is a genuine cost-effective solution to warm rooms within your home that get cold easily, brighten rooms naturally that don’t get enough daylight (up to 80% Light Transmission) and quieten overly noisy rooms (Rw: 36 dB).
Future Proof Your Building
Our glass demonstrates an extremely high thermal performance, producing a U-value from 0.49 W/m2K. This means it takes significantly less energy to heat a home with vacuum glazing, with the property also staying warmer for longer during periods of colder weather.
The problems that arise in most homes, is generally down to the quality of the glass in the windows as opposed to any other areas of the building. The heat and sound insulation provided by PassivGlas™ vacuum glazing can enhance the aesthetics of your home whilst helping to reduce running costs. Additionally, vacuum glazing replacement will set you up to comply with the UK’s plans to reach Net Zero carbon emissions by 2050.
Less Disruption, More Savings
In many cases, a property that is suitable for a vacuum glazing upgrade will have existing window frames that are still perfectly usable. Thanks to the technology used in the creation of PassivGlas™, there’s no requirement to replace the frames as we will produce a hybrid unit to match the frame. This saves on installation costs, as well as making the process far quicker and less disruptive to your home.
Key points
Historic England (HEAG321 – Adapting Historic Buildings for energy and Carbon Efficiency Advice notice HEAN 18 v1.0 July 2024) recognises Vacuum Insulated Glazing as a viable option for sustainable re-development
- Superior thermal insulation: Ug-Value from 0.49 W/m2K
- UKAS tested sound reduction of Rw 36 dB
- Slimline: from 6.15 mm thick
- 15-year warranty on single VIG’s
Frequently Asked Questions
What are vacuum units?
Vacuum Insulated Glazing or VIG is an advanced fenestration type of insulating unit. It consists of two glass panes, like a standard Insulating unit, but rather than the spacer bar and an air gap, VIG’s are separated by a micro vacuum gap, with a glass solder edge seal.
Are they fully tested?
Yes, they are tested to recognised industry standards:
Impact resistance: EN 12150-2 & ANSI Z97.1-37 & EN 12600 & BS356 (recently completed)
Weathering: EN1279-5 & ASTM E546/E2188/E2189
U-Value: ISO8301/EN12667 (Recently UKAS tested) & ASTM C518
Soundproof: ISO 10140-2 (Recently UKAS tested)
Do the standard units use coated glass?
Yes, all PassivGlas™ Linear units incorporate a Low-e single silver toughenable coating.
In order to meet the current Part O regulations, a Low-e double silver coating would be needed to meet the 70/40 requirements. Please check with VGN as to availability and MOQ for this product range.
What is the expected life?
Expected life on the unit is 25+ years due to there being no spacer bar to fail.
Will there be any condensation
Condensation is formed when the air temperature surrounding an object falls below the dew point and changes into a liquid
Internal:
Although condensation will not form on the internal surface of a VIG unit, Vacuum Glazing does not eradicate condensation from the room.
The warmer inner glass will potentially change the rooms cold point.
It is advisable to ensure all rooms have effective ventilation/circulation.
External:
Condensation may form on the external glass surface under certain conditions.
Generally, forms a grid around the micro-pillars.
Will disappear when the outside temperature warms with the morning sun.
It is an indication of how efficiently your windows are at reducing thermal loss.
Condensation between glasses:
An indication that the Vacuum has been lost.
Consult your supplier to confirm course of action.