Detached home with modern casement windows installed by Homebrite
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Homebrite Windows

Casement Windows Built Around Comfort, Security and Style

Replace ageing frames with made-to-measure casement windows configured for your home, your performance goals and your preferred finish.

  • Kömmerling C70/O70 and flush-style specification routes available
  • Double and triple glazing pathways tailored to your home
  • PAS 24 and Secured by Design upgrade options where required
  • Installed in Kent with a 10-year insurance-backed guarantee

Why Homeowners Continue to Choose Casement Windows

Casement windows remain one of the UK’s most trusted replacement formats because they deliver practical opening control, strong weather performance and broad design flexibility in one system.

Decorative casement window fitted on a period-style home

Reliable Everyday Ventilation

Side-hung and top-hung opening options give you practical airflow control room by room, from kitchens and bathrooms to bedrooms and living spaces.

Bright kitchen with large windows designed for thermal comfort

Energy-Conscious Performance

Modern frame systems and quality seals help reduce avoidable heat loss and draughts, supporting year-round comfort and lower wasted energy.

Close-up of secure locking hardware on a casement window

Security-First Hardware Options

Multi-point locking and reinforcement options can be configured to suit everyday security priorities and specification-led projects.

White casement windows with decorative astragal bars on a home exterior

Cleaner, Sharper Kerb Appeal

From classic white to heritage tones and contemporary anthracite, casement windows can be matched to both traditional and modern elevations.

Casement Styles to Match Different Property Types

From modern slimline projects to heritage-sensitive upgrades, we help you shortlist style options that suit both appearance goals and practical use.

Standard white casement window style with clean sightlines

Standard Casement

A practical side-hung or top-hung format that suits most properties and works well with single, paired or multi-light openings.

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Kommerling flush casement style fitted in a traditional setting

Kömmerling Flush 70

Flush-fitting sash styling for a more traditional external look, while keeping modern weather performance and low-maintenance benefits.

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Residence-style casement windows on a heritage-inspired facade

Residence 9 Style

An alternative-to-timber aesthetic for homes where period character matters, paired with modern glazing and sealing performance.

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French-opening casement window with one sash open inward

French-Opening Casement

Both sashes open fully to create a wide clear opening for ventilation, easy furniture access and practical emergency egress routes.

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Frame Materials and Finish Choices

We guide you through the practical differences between uPVC, aluminium and alternative-to-timber systems so you can balance upkeep, aesthetics and budget confidently.

uPVC casement windows on a modern residential property

uPVC Casement Windows

Low-maintenance and thermally efficient, with broad colour, woodgrain and hardware choices for day-to-day practicality.

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Aluminium casement window installation with slim profiles

Aluminium Casement Windows

Slimline frames with high structural strength for larger glazed areas and crisp contemporary lines.

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Alternative-to-timber casement window finish in a period style

Alternative-to-Timber Systems

Heritage-led styling that replicates timber character while reducing routine maintenance and keeping modern performance.

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Glazing and Performance Specification

We build your glazing recommendation around real-world outcomes: comfort, reduced heat loss, quieter rooms and efficient day-to-day operation.

Energy rating chart for double glazed window specification

Double Glazing as Standard

Most projects start with high-spec double glazing configured around comfort, budget and room orientation.

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Close-up of triple glazing unit fitted in a uPVC frame

Triple Glazing Upgrade Routes

Where exposure or comfort goals demand more, triple glazing can be specified in selected casement systems.

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Graphic illustrating glazing options for noise reduction

Acoustic Comfort Planning

Glass build-up, spacer choice and installation quality all influence how effectively outside noise is reduced.

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Specification Notes From Current CWG Supply Pathways

  • System routes include Kömmerling C70, O70 and flush-format options.
  • Typical double-glazed U-value pathways start around 1.4 W/m²K, with lower values available by specification.
  • Triple glazing upgrades are available on selected profile and sash combinations.
  • Final energy outcomes depend on frame choice, opening size, glass build-up and installation quality.

Security and Compliance Priorities

We help you choose practical security features first, then add enhanced standard pathways where your brief or property risk profile requires them.

Window cross-section showing multi-point locking positions

Multi-Point Locking as Core Specification

Modern casement configurations use reinforced keeps, shootbolt locking and tested hardware combinations for stronger day-to-day protection.

Secured by Design security badge used for specification planning

PAS 24 and Secured by Design Pathways

When your brief requires enhanced security testing alignment, we can scope upgrade routes during survey and specification.

Smart app view showing casement window lock status

Kubu-Ready Smart Monitoring

Selected systems can be prepared for smart status tracking, helping you see if windows are locked before bed or when leaving home.

Finished interior with newly installed casement windows

Compliance-Led Documentation

You receive clear completion paperwork and guarantee details once installation is signed off, supporting confidence long after fitting day.

How Your Casement Window Project Runs

A clear process keeps your project predictable: survey, specification, installation and documentation-led handover with aftercare support.

Bright living space used to represent in-home survey and planning

Step 1

Home Survey and Measure

We assess each opening, discuss style/material preferences, and capture exact measurements for a true fit-first proposal.

Kömmerling profile cutaway used for casement specification planning

Step 2

Specification and Quote

Your quote is built around frame system, glazing level, hardware and finish options so you can compare choices clearly.

Completed casement window installation on a white-rendered home

Step 3

Installation by Local Teams

Installers remove existing units, fit your new casement windows accurately and complete weatherproofing and finishing trims.

Modern kitchen with newly installed windows representing post-install comfort

Step 4

Handover and Aftercare

You receive usage guidance, care advice and your guarantee documentation, with follow-up support from the Homebrite team.

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Get an Instant Quote on Casement Windows

Get a fast, tailored quote with clear options on style, glazing and finish so you can choose the right casement windows with confidence.

Large home with multiple casement window installations

Frequently Asked Questions

Straight answers to common planning, performance and installation questions before you commit.

Are casement windows suitable for both modern and period homes?

Yes. We offer standard, flush and heritage-led casement options so the external look can be matched to your property while still delivering modern glazing and sealing performance.

What materials are available for Homebrite casement windows?

Typical options include uPVC, aluminium and alternative-to-timber systems such as Residence-style profiles. During survey, we help you compare maintenance needs, sightlines and finish choices.

Can I choose double or triple glazing?

Yes. Double glazing is the standard route for most homes, while triple glazing can be specified where comfort and exposure priorities justify the upgrade.

Do you offer enhanced security specifications?

Yes. Multi-point locking is standard, and upgrade pathways can include PAS 24 and Secured by Design aligned options where project requirements call for them.

Do I need planning permission to replace casement windows?

Most like-for-like replacements are permitted development, but listed properties and conservation areas may need additional approval. We can help you review this before installation.

How long does a full casement window project usually take?

Timelines depend on property size, access and specification. After survey, we provide a clear lead-time and installation schedule so you know what to expect at each stage.