Vacuum glazing has become one of the most effective ways to upgrade heritage and conservation‑sensitive buildings without altering their character.
For architects, designers, developers, and contractors, it solves a familiar problem: how to deliver modern thermal, acoustic, and compliance performance in frames that were never designed for bulky double or triple glazing.
Vacuum glazing is increasingly the go‑to choice for sensitive refurbishments - especially where planning constraints, client expectations, and technical limitations collide.
Heritage work is defined by constraints. You’re often dealing with:
Vacuum glazing delivers very high thermal performance within a slim profile while preserving original detailing. That combination is rare - and valuable.
1. Ultra Slim Construction
Fineo 8’s 7.7mm overall thickness fits where even slim double glazing fails, allowing original frames, bars, and mouldings to remain intact.
2. Triple glazing performance
With U values as low as 0.7 W/m²K, vacuum glazing meets modern energy expectations without altering the building’s appearance.
3. Authentic heritage aesthetics
Fineo Heritage is designed to replicate the appearance of traditional historic glass, easing planning approvals and maintaining architectural integrity.
4. Acoustic comfort in urban settings
Fineo Acoustic delivers up to 42 dB noise reduction, ideal for city centre refurbishments, transport corridors, and mixed use developments.
5. Solar control for exposed elevations
Fineo Solar Control reduces overheating while maintaining high light transmission - a major advantage for south facing façades and large sash windows.
Heritage projects rarely follow a straight line - every building comes with its own mix of constraints, quirks, and performance expectations. Vacuum glazing proves its value most clearly in the moments where traditional solutions fall short, offering a way to meet modern standards while working within the realities of existing fabric, planning requirements, and client ambitions.
Listed buildings & conservation areas
Slim profiles, low weight, and heritage‑authentic finishes make vacuum glazing a natural fit for sensitive refurbishments.
Timber sash window upgrades
Reduced weight helps preserve smooth operation and avoids the reinforcement often required with heavier IGUs.
High‑performance retrofits
Occupants benefit from improved EPC ratings, reduced heating/cooling costs, and fewer planning hurdles.
Complex or bespoke joinery
Curved, arched, or non‑standard windows – such as Salisbury Joinery’s recent work on the Keynsham High Street project - become feasible without compromising performance.
Salisbury Joinery combines a wealth of expert knowledge and advice, heritage craftsmanship, and Fineo approved manufacturing and installation, with proven experience working with local authorities and conservation guidelines. For project teams, that means:
• Fast CAD revisions (typically 24-48 hours)
• Named project contacts from design to delivery
• Expertise in conservation specs and CDP responsibilities
• Precision made timber windows and doors that match drawings exactly
This level of support reduces risk, accelerates approvals, and ensures the final installation performs as specified.
For deeper technical detail, performance data, and product comparisons, download the full Salisbury Joinery Vacuum Glazing eGuide.