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For a more versatile home

Manufactured in-house, our highly functional casement window range have energy efficiency ingrained within their design. Exceptionally adaptable with their slim, gentle curved shape and easy ventilation control, our casement replacement windows dramatically retain and conserve energy within homes and businesses across North Somerset and the South West; so much so, they can considerably reduce heating bills too.

With energy efficiency firmly in mind, our reliable casement windows are ‘A’ energy rated as standard alongside our first-rate frames. Combined with some of the lowest U-values possible, our Swish casements can achieve a U-value of just 1.2 with our triple glazed units.

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Range of colours

Fully Accredited

10 year guarantee

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Casement

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White aluminium casement windows installation

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White wood grain effect uPVC casement window

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White aluminium casement windows installation Visit gallery

Customise your windows with our great range of colours & finishes

Add a superb finishing touch to your newly installed casement windows, with a classic woodgrain effect, bold statement colour, on-trend shade or dual-colour to compliment your interior and exterior décor. Complimenting contemporary and traditional homes alike, pick a finishing touch from our extensive range that truly fits your personality and style; providing remarkable curb appeal. We also have an extensive range of window Fab ‘n’ Fix hardware to choose from, including monkey tail, teardrop and connoisseur offset window handles to name but a few.

When it comes to ongoing maintenance, our casement range provide South West homeowners with the ultimate peace of mind. Virtually maintenance-free, our uPVC casement range simply need an occasional wipe over; eliminating painting & varnishing, conveniently allowing your windows to make a statement for many years to come. Furthermore, decorative options include Georgian bars, shaped or arched windows and leaded glass.

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Popular colours

More available upon request. Colours may vary across devices. Please request a colour swatch for an accurate representation.

Sienna PR

Sienna PR

Cream

Cream

Irish Oak

Irish Oak

Hazy Grey

Hazy Grey

Chartwell Green

Chartwell Green

Dark Red

Dark Red

Steel Blue

Steel Blue

Slate Grey

Slate Grey

Anthracite Grey

Anthracite Grey

Black Brown

Black Brown

  • Downloads
  • Glazing
  • Security
  • Materials

    • Downloads

    Swish Windows and Doors Buyers Guide

    Swish Windows and Doors Buyers Guide

    Swish Windows and Doors Brochure

    Swish Windows and Doors Brochure

    Swish Windows and Doors Benefit Brochure

    Swish Windows and Doors Benefit Brochure

    Optima flush sash casement

    Optima Flush Sash Casement Brochure

    Smarts Alitherm Brochure

    Smarts Alitherm Brochure

    Smarts Colours and Finishes

    Smarts Colours and Finishes

    Uni Blinds Brochure

    Uni Blinds Brochure

    Pilkington Glass Texture Brochure

    Pilkington Glass Texture Brochure

    Glass Systems Decorative Glazing Options

    Glass Systems Decorative Glazing Options

    Glazing

    Glazing

    Whether you’re looking for extra privacy, a textured effect to match existing windows/doors, additional acoustic insulation or self-cleaning/solar control glazing, our premium range of textured, etched and technologically advanced glass suits both modern and more traditional homes across the South West.

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    Chantilly

    Chantilly

    Charcoal

    Charcoal

    Contora

    Contora

    Digital

    Digital

    Everglade

    Everglade

    Florielle

    Florielle

    Mayflower

    Mayflower

    Minster

    Minster

    Oak

    Oak

    Pelerine

    Pelerine

    Stippolyte

    Stippolyte

    Taffeta

    Taffeta

    Security

    Security

    When you choose windows from Seal-Lite, your comfort and security come first above all else – more often than not, security is the main reason windows need to be replaced. Approved by the official UK Police flagship initiative Secured by Design, our casement window locking mechanisms and hinges are exceptionally user-friendly & secure. Combined with wide-opening egress hinges for an easy escape route, this provides homeowners across the South West with complete peace of mind that their home is in safe hands; whatever life throws at them.

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    Casement window handle close up

    Materials

    Materials

    Manufactured in-house and recycling everything onsite, our classic casements are available in pragmatic uPVC or alluring Customade aluminium profiles. At Seal-Lite, we use a new generation of energy saving window glass from Glass Systems. So, whatever type of home you live in you’ll be safe in the knowledge that both materials are guaranteed against rot and condensation developing.

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    uPVC

    uPVC

    Aluminium

    Aluminium

    Liam Davidson

    "An excellent service all round"

    An excellent service all round. Very friendly and took time to ensure the windows were exactly as I wanted. The windows themselves are well made and have completely transformed my house.

    Anthony Derrick

    "Thoroughly recommend Seal-lite"

    We had Seal-lite install full new double glazing including bi-fold doors a little while ago, excellent products and service. Their after sales service by Simon is very, very good indeed. Thoroughly recommend Seal-lite.

    Chris Townsend

    "Excellent service from start to finish"

    An excellent job done by Paul and his team. Transforming the front of our house with Georgian bar style windows and a fantastic new bay window. Finished off by a new door. Highly recommended excellent service from start to finish.

    Helen Marks

    "Very patient and understanding"

    I would absolutely recommend Seal-Lite Ltd. They have been so helpful helping me to match my new aluminium windows to the existing house. They have also been very patient and understanding with me having to delay installation for several months due to problems with my builder. Kevin fitted the windows very carefully and did an excellent job. A couple of minor things were no problem and resolved quickly to my full satisfaction. I would like to thank Paul and Pete and the team for being so so helpful. A pleasure to do business with this company – I wish all companies were like this.

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    CertassQA National WarrantiesSwish Approved InstallerCEN Solutions Bronze

    Excellent aftercare service and on-site service engineer for complete peace of mind

    Always striving to look after our customers wherever possible, we are extremely proud of the high standards of craftmanship, fabrication, installation and aftercare services that our highly skilled team continue to excel at delivering. Our excellent aftersales service and on-site service engineer proactively deal with any issues that occasionally occur with our products directly - no job is too small for our service engineer!

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    Seal-Lite Showroom

    Visit our showroom

    It’s important for homeowners and businesses alike to actually see the quality of our products up close. So, why not come and see the products for yourself?

    Home under construction

    New build projects

    With an outstanding range of uPVC and aluminium products supplied directly to our trade customers, we are highly experienced in working alongside architects and contractors on new build projects.

    Trade installaters

    Trade supply

    As well as serving the local community, we have many established connections with various different trade customers across the South West who value the high-quality products that we produce.