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Flush Casement Windows: The Modern Classic

Flush casement windows are a stylish and increasingly popular choice, defined by their sleek design where the opening sash sits perfectly level with the outer frame when closed. This creates a smooth, flat surface that offers a elegant, heritage-inspired look while providing plenty of natural light.

Ideal for Heritage Homes

When crafted from timber or wood-effect, flush casement windows can perfectly replicate the authentic look of traditional period joinery and can be used in conservation areas.

Energy Efficiency

The design, combined with high-performance glazing and the natural insulating properties of our materials, helps to reduce heat loss and improve your home's energy efficiency.

Range of Materials

Choose from beautiful uPVC Residence Collection windows, premium timber frames and contemporary aluminium windows to suit your property.

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white residence 9 flush sash window

What do our customers say

TLCC have done a superb job on our new conservatory. All work completed to a very professional standard, they kept us well informed on progress and reliably turned up when...

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Adrian Stubbings

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We had a new conservatory fitted to replace a derelict one. Very professional from the start and five star product. So pleased and would absolutely recommend.

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Beth White

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Happy to recommend the Little Conservatory Company who have just completed our replacement conservatory with solid, super insulated roof. The LCC installation team, Luke and Ritchie, were exemplary.

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John Baylis

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Paul and his team have been absolutely brilliant with the work they completed. Punctual, professional and years of experience that just reassures you when you are trying to change and...

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Ben Homans

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Excellent from start to finish. We really feel we made the right choice with The Little Conservatory Company. We were always able to speak to someone in the office easily...

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Emer Glynn

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I would definitely recommend Paul and his team. They have done beautiful work. They have changed my door, all my house windows including 2 patio doors and conservatory. Starting from...

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David Ferdinando

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  • Materials
  • Colours
  • Security
  • Thermal Efficiency

Materials

Choose Your Perfect Style

At The Little Conservatory Company, we offer flush casement windows in three exceptional materials to perfectly suit your property.

For a truly authentic and classic look, our timber windows provide natural beauty and superior insulation. Our uPVC windows, including the premium Residence Collection, are a popular choice for their low maintenance and excellent thermal performance. Lastly, our aluminium windows offer a sleek, modern aesthetic with slim frames that are both durable and elegant.

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brown residence 9 flush sash window

Colours

Our Extensive Colour Range

No matter which material you choose for your flush casement windows, we offer an extensive range of colours and finishes to help you find the perfect match for your property.

From classic shades to bold, contemporary hues, you can customise your windows to either complement your home's existing features or create a stunning statement. This bespoke approach ensures that every window we install is a beautiful addition to your home.

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cream flush sash windows on cottage

Security

Built For Security

We prioritise security across all our flush casement window options, regardless of the material you choose.

Each window is fitted with advanced security features, including robust multi-point locking systems and durable hardware. This ensures that our timber, uPVC, and aluminium flush casement windows are not only beautiful and energy-efficient but also provide a strong and reliable barrier, giving you peace of mind and keeping your home safe.

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white flush sash window

Thermal Efficiency

Superior Thermal Efficiency

We ensure that all our flush casement windows provide excellent thermal efficiency, helping to keep your home comfortable throughout the year. The natural insulating properties of timber, the multi-chambered design of our uPVC frames, and the advanced thermal technology in our aluminium windows all work to reduce heat transfer.

Combined with high-quality glazing, these features help to maintain stable indoor temperatures, minimise heat loss, and significantly lower your energy bills.

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green flush sash window
Timber casement window with astragal bar design and black monkeytail handles

Solutions for Heritage Homes

Our timber flush casement windows are specifically designed for heritage properties and conservation areas, where maintaining authentic period character is essential. These windows perfectly replicate the traditional flat profile found in historic architecture, ensuring your property retains its authenticity whilst meeting modern performance standards.

Crafted from premium hardwoods, our timber flush casement windows often satisfy the strict planning requirements found in conservation areas, making them the ideal choice for listed buildings where synthetic alternatives may not be permitted.

Modern Materials: uPVC and Aluminium Options

For homeowners seeking the authentic appearance of timber without the maintenance requirements, our wood effect uPVC flush casement windows provide the perfect solution. Available through our Residence Collection, these windows feature realistic wood-grain finishes that are virtually indistinguishable from genuine timber, yet require only occasional cleaning with soap and water.

For those preferring a more contemporary aesthetic, our aluminium flush casement windows offer sleek, slim sightlines with exceptional durability and minimal maintenance. Get in touch with our team today – we can help you find the perfect flush casement windows for your property.

grey flush sash window

Frequently Asked Questions

We've answered some commonly asked questions to help you make an informed decision about your home improvement project. If you have any other questions, please get in touch!

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What is the difference between flush casement and regular casement windows?

Flush casement windows (also known as flush sash windows) are designed so the opening sash sits perfectly level with the frame when closed, creating a smooth, flat surface. Standard casement windows have the sash sitting proud of the frame. This flush design provides better weather sealing, improved aesthetics, and closely replicates traditional period window styles.

What are Residence Collection Windows?

Residence Collection Windows are a series of premium-quality windows designed for residential properties. These stunning windows are made from uPVC, and come in a range of styles. This includes a window style (R9) which is designed to replicate traditional timber window styles.

Which materials do you offer for flush casement windows?

We offer flush casement designs in three premium materials: timber (including oak, sapele, and idigbo), uPVC with wood effect finishes through our Residence Collection, and aluminium with powder-coated finishes in any RAL colour.

Are flush casement windows suitable for period properties?

Yes, flush casement windows are ideal for period properties, particularly our timber options which authentically replicate Georgian and Victorian window styles. Our wood effect uPVC alternatives also satisfy many conservation area requirements while offering lower maintenance and modern functionality.

Can flush casement windows improve energy efficiency?

Yes, all our modern flush casement windows are designed to modern energy efficiency standards and are built with quality double glazing or triple glazing and robust weathersealing. The flush fitting window design creates superior sealing, reducing draughts and heat loss when combined with high-performance glazing.

What maintenance do flush casement windows require?

Timber windows require periodic refinishing and staining, uPVC windows need only occasional cleaning with soap and water, and aluminium windows require minimal maintenance – just regular cleaning to keep them looking their best.

Get in touch with us today and transform your home

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