Upgrade your original timber sash windows with Fineo vacuum glazing. Enjoy exceptional thermal performance, reduced noise and improved energy efficiency while preserving the slim appearance of traditional single glazing.
FINEO Vacuum Glazing provides a way to significantly improve the thermal performance of traditional timber windows while retaining a much slimmer glass profile than conventional double glazing.
This makes it particularly relevant to sash windows and period properties where maintaining traditional proportions and appearance is important. Depending on the existing window and project requirements, FINEO can be incorporated into new timber sashes or considered as part of a carefully specified window upgrade.
By combining specialist timber joinery with modern vacuum glazing technology, SashWise can help homeowners improve comfort, energy efficiency and noise insulation without unnecessarily compromising the character of traditional windows.
FINEO is a vacuum-insulating glazing system designed to provide high levels of thermal insulation within a very slim glass unit. Instead of relying on the wider gas-filled cavity used in conventional double glazing, FINEO uses a vacuum between two panes of glass to significantly reduce heat transfer.
Its slim profile can make it particularly useful where maintaining traditional glazing proportions is important, including some period and heritage window projects.
FINEO also promotes recyclability and long service life as part of the product's sustainability benefits.
The current SashWise page states that FINEO is 100% recyclable, contains no inert gases or organic seals. These product-specific claims should be checked against the current FINEO manufacturer specification before the revised page is published.
Vacuum cavity
The narrow vacuum between the panes greatly reduces conduction and convection, helping limit heat transfer through the glass.
Micro-spacers
Small spacers maintain the required distance between the panes under vacuum. Their purpose is structural while allowing the unit to remain exceptionally slim.
Low-emissivity coating
A low-E coating helps reduce heat loss through the glazing while maintaining high levels of natural light.
Slim profile
Because the insulating cavity is extremely narrow, vacuum glazing can achieve a much slimmer overall profile than conventional double glazing. This can help preserve the proportions of traditional timber sashes.
Thermal performance
The current page quotes a centre-pane U-value of 0.7 W/m²K and describes performance as comparable with triple glazing. This figure should be confirmed against the exact current FINEO product specification used by SashWise before publication.
Improved thermal insulation
Vacuum glazing can substantially reduce heat transfer through the glass compared with traditional single glazing, helping create a more comfortable internal environment.
Reduced risk of internal condensation
A warmer internal glass surface can help reduce the likelihood of condensation forming on the glazing, although condensation is also influenced by ventilation, humidity and wider property conditions.
Noise reduction
FINEO can provide improved acoustic performance compared with traditional single glazing, making it worth considering for homes affected by traffic and other external noise.
UV protection
Specialist glazing can also reduce the transmission of ultraviolet radiation, helping protect interior furnishings from some of the effects associated with UV exposure.
Suitable for sensitive period-window projects
The slim profile of vacuum glazing can make it an option where conventional double glazing would alter traditional glazing proportions. Suitability for listed buildings or conservation-area properties remains subject to the individual property and any required permissions.
Long-term performance and sustainability
Improving the performance of existing or traditionally detailed timber windows can support a retain-and-upgrade approach, potentially reducing the need for wholesale replacement.
The current page includes specific claims of a 34% perceived noise reduction, 18% improvement over double/triple glazing and at least 99% UV blocking. These figures should be verified against current manufacturer data before they are retained.
Is FINEO right for your sash windows?
FINEO can be an excellent option where improved thermal performance is a priority but the slim proportions of traditional glazing also need to be considered. However, the right glazing solution depends on the existing window, available glazing depth, planning considerations, acoustic requirements and the wider scope of work.
SashWise offers a range of glazing options alongside FINEO, including slimline heritage double glazing, standard double glazed units and specialist acoustic glass. We can assess your windows and explain which specification is most appropriate for the property rather than taking a one-size-fits-all approach.
Explore our Timber Window Glazing Options or contact the SashWise team to discuss whether FINEO Vacuum Glazing is suitable for your windows.
Please call us on 0208 977 4627 or complete the form below.
Please complete the form to discuss your sash window requirements or for further information about our services.
Address:
Unit 39, Railway Arches
Popes Grove
Twickenham TW1 4JW
Tel: 0208 977 4627
