What's the typical lead time for casement windows?

UPVC casement windows typically 2-3 weeks from order to installation. Aluminium windows depend on supplier schedules but generally 4-6 weeks. For large projects, we’ll provide detailed programme timelines during quotation.

Can you work to tight construction programmes?

Yes, we regularly work on projects with fixed completion dates. Early engagement helps us order materials and schedule installation to meet your programme. We coordinate with main contractors and other trades to avoid delays.

Do you supply only, or supply and install?

Both. Many contractors prefer supply-only for their own installation teams. We also offer full supply and installation, particularly valued by housing associations, facilities managers, and clients without in-house installation capability.

Can you match existing windows on phased refurbishment projects?

Yes, we can match profiles, colours, and glazing specifications from phase to phase, ensuring consistency across multi-year refurbishment programmes common with local authorities and housing associations.

Do you handle building control notifications and compliance?

Yes, we’re FENSA registered and we can handle building control notifications for replacement windows. For new builds, we provide specifications and U-value calculations for your building control submission.

What maintenance do casement windows require?

Minimal. UPVC requires occasional cleaning; no painting ever needed. Aluminium is similarly low-maintenance. We recommend annual lubrication of hinges and locks, and checking drainage holes remain clear. This minimal maintenance makes them ideal for social housing and commercial buildings with limited facilities budgets.

Can you install casement windows in occupied buildings?

Yes, we regularly work in occupied social housing, operational schools, and live commercial premises. We schedule work to minimise disruption, complete installations room-by-room, and maintain security throughout. Essential for refurbishment projects where decanting tenants isn’t feasible.

Casement Windows - True Window & Glass Centre

Casement Windows: The UK's Most Versatile Window Solution

Casement windows remain the UK's most popular window style for good reason: they're practical, cost-effective, and suit virtually any building type, from social housing developments to commercial premises. At True Window & Glass Centre, we supply and install high-quality UPVC and aluminium casement windows designed for durability, thermal efficiency, and ease of maintenance.

Whether you're a contractor specifying windows for a housing development, a facilities manager replacing commercial units, or a local authority upgrading your housing stock, our casement windows deliver reliable performance across sectors. Manufactured to exacting standards and installed by our experienced team across Lincolnshire, Nottinghamshire, Norfolk, Cambridgeshire, and the Midlands.

Colour Options

White remains the most cost-effective choice for large projects. However, we offer a range of different colours and finishing textures to allow you to create your desired aesthetic. Two-tone windows allow you to adopt a colour on the outside and retain white frames on the inside to match interior décor.

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Configurations

Casement windows can be configured in numerous ways to suit site-specific requirements. Our team will walk you through the many options available to you and will give you all the information you need to make an informed decision. We’ll discuss opening options, window pane sizes, and hardware options to help you design the best solution for your space.

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Why choose casement windows?

Casement windows have dominated the UK market for decades because they’re efficient and versatile. Side-hung and opening outwards, they provide maximum ventilation, excellent weather seals, and straightforward operation that occupants understand instinctively.

Key Advantages

Cost-Effective at Scale
For large projects, housing developments, school refurbishments, and office buildings, casement windows offer the best balance of performance and cost. Straightforward design means competitive pricing without compromising quality or longevity.
Simple Operation
No complicated mechanisms to fail. Casement windows open with a simple handle operation, making them ideal for social housing, care homes, schools, and any application where ease of use matters.
Maximum Ventilation
Opening fully outwards, casement windows provide unobstructed airflow which is crucial for building regulations compliance, particularly in commercial kitchens, laboratories, and educational facilities requiring specified ventilation rates.
Easy Maintenance
The outward-opening design allows external glass cleaning from inside the building – a significant advantage for upper floors in flats, care homes, and commercial buildings where external access is expensive or impractical.
Secure When Specified Correctly
Modern casement windows feature multi-point locking engaging at multiple locations around the frame. When specified with appropriate glazing and hardware, they offer excellent security for social housing and commercial applications.
Universal Application
From bungalows to high-rise flats, period conversions to new-build commercial premises, casement windows adapt to virtually any architectural style and building type.

40+ Years of Expertise

Since 1983, we’ve been serving Lincolnshire and the surrounding counties with honest, reliable glazing services. Our longevity speaks to our commitment to quality workmanship and customer satisfaction.

With over 2,000 happy clients across the region, we’re proud to be Lincolnshire’s first choice for windows, doors, and conservatories.