Enhanced glazed facades
Smarter glass. Lower demand. Better buildings.
If a commercial building still relies on underperforming glazing, energy loss, solar gain and occupant discomfort are no longer background maintenance issues. They are performance issues with financial, operational and leasing consequences.
Built for landlords, owners, consultants, architects and refurbishment teams planning the next generation of commercial building performance.
2030 lens
3 upgrade outcomes
Better aesthetics. Better occupant experience. Better control over heating and cooling demand.
Winter pressure
Heat loss
Older units and weaker thermal performance allow valuable heat to escape through the facade.
Summer pressure
Solar gain
Excess solar energy can drive overheating, glare and additional cooling demand in occupied spaces.
Occupier pressure
Workplace quality
Failed units, dark film and temperature instability can undermine how a building looks and feels every day.
Why this matters now
Commercial glazing has moved from background detail to board-level building performance.
UK non-domestic energy prices remain materially above early-2021 levels. That means heat loss, solar gain and envelope performance now influence not just comfort, but operating cost, asset quality and how competitive an older commercial building feels against newer stock.
For buildings with significant areas of glazing, inefficient glass can increase winter heating demand while also allowing too much solar energy into occupied spaces during warmer periods. The result is a building that can feel expensive, uncomfortable and harder to manage.
Improved aesthetics. Better working environment. Reduced energy demand.
Glazing is part of the building’s operating system
In a modern commercial building, glazing shapes far more than daylight and appearance. It influences solar gain, heat loss, glare, internal comfort, facade consistency and the everyday perception of the workplace.
That is why commercial glazing upgrades should not be framed as simple replacement works. In the right context, they can be strategic interventions that improve how a building performs, how tenants experience it and how owners future-proof it for the years ahead.
67%
Approximate reduction in solar energy transmission after upgrading from a g-value of 0.63 to 0.21.
945 m2
Of glazing upgraded to support a wider refurbishment strategy and improved facade performance.
748 m2
Replaced to date through a specialist reglazing approach within an existing curtain walling system.
The glazing enhancement approach is not about replacing everything. It is about identifying where targeted glazing upgrades deliver the strongest gains in comfort, aesthetics and energy performance.
Real projects. Real performance problems. Real upgrade strategies.
Dortech Architectural Systems has delivered specialist reglazing and full replacement projects where the goal was not simply to change glass, but to improve how buildings perform and feel in use.
Healthcare environment
Ordsall Surgery
South and south-west facing spaces were overheating during warmer months. Dortech retained the existing frames and replaced the insulated glass units with high-performance solar-control glass, reducing solar heat transmission and helping the client avoid the cost and complexity of new air conditioning.
Refurbishment support
Office building, Leeds
Working with TSK Group, Dortech upgraded approximately 945 m2 of glazing to support the refurbishment of an air-conditioned office building. The new specification improved thermal performance while lowering solar gain, helping the facade work harder as part of the wider building upgrade.
Curtain walling upgrade
ABC Building, White Rose Park
Ageing units, inconsistent film and tenant comfort issues had left the facade looking patchy and performing poorly. Dortech developed a specialist replacement glazing solution around the existing MAG Presslock Curtain Walling System, improving visual quality, comfort and ongoing building performance without full facade replacement.
Full window replacement
Retail company, Sleaford
Dortech replaced draughty single-glazed aluminium windows with thermally broken aluminium systems, improving winter performance while introducing solar-control glazing on southerly elevations to help tackle summer overheating. It is a clear example of a full replacement strategy improving usability as well as efficiency.
Solar-control glazing can reduce overheating at source rather than treating the symptom later.
Targeted reglazing can support wider refurbishment and EPC improvement strategies.
Specialist glazing replacement works can modernise a live commercial environment without wholesale replacement.
Full replacement window strategies remain powerful when older systems are no longer fit for purpose.
What a glazing upgrade should deliver
Better energy performance is only part of the picture. The strongest glazing strategies improve the facade as a complete business asset by supporting comfort, visual quality and long-term operational resilience.
01
Sharper building aesthetics
Replacing failed, mismatched or heavily filmed units can dramatically improve the external quality of a facade.
02
Stronger occupant experience
Cleaner views, better daylight control and more stable internal conditions help create more usable workplaces.
03
Lower heating and cooling demand
Improved U-values and lower g-values help reduce winter heat loss and manage unwanted solar gain in summer.
Model the potential savings on your building
Dortech Maintenance has developed a commercial glazing energy-saving model to help owners, consultants and project teams explore the indicative impact of upgrading windows, doors and glazed screens.
Important: any energy or cost savings are indicative only and depend on building design, orientation, occupancy, HVAC systems, operating conditions, weather, maintenance and energy tariffs. The model should be used as an early-stage decision-support tool only.
