Flush Casement Windows in St Helens

Flush casement windows are an excellent way of adding a traditional, period charm for any St Helens home. Install these elegant windows into any home to create a light, airy space. Flush fitting windows imitate the look of timber joinery and have a sash closing.


Our flush casement windows are low maintenance and durable. We make them with uPVC, which is weatherproof and doesn't bow or warp in the profile.

Energy Efficient

Flush casement windows allow you to maintain traditional aesthetics with fantastic insulation. Double glazing and internal chambers ensure natural warmth.

Timber Alternative

Visually, they may replicate timber windows, but the uPVC material will protect them from the elements. You'll never have to worry about damp again.

Specialist Installers

Our home improvement specialists are experienced working with new and older properties. You can depend on our installers to take a duty of care.

Safe and Secure

Our flush sash windows are safe and secure. With multiple features to keep the home protected against intruders, you can have complete peace of mind.

Easy Upkeep

We use uPVC on our flush casement windows. They don't need to be painted, sanded or varnished to look as good as the day they were installed.

Get a Quote Today

Use our online quoting engine now to get a price for flush casement windows.

Colour Options

Glass Options

white cream agate-grey basalt-grey anthracite-grey brilliant-blue steel-blue chartwell-green dark-green dark-red natural-oak light-oak english-oak mahogany rosewood
clear arctic oak pelerine stippolyte sycamore Minister florielle flemish mayflower casement-everglade-cutout evergalde cotswold digital warwick charcoal-stick autumn chantilly taffetta

Window Hardware

Clean Designs

The button sits horizontal to the handle.

Push to Release

To release the locking system simply push the button.


Passes the BSEN1690 salt and ammonia resistance test.


Advanced security with additional key locking features.


Left or right hand operation with our sculptured handle.

Colour Choices

Push button and colour cap screw available.

Flush Sash windows St Helens

Flush Sash Window Benefits

Fire Egress Hinges

Lipped slider hinges aid the ease of use. Simple friction adjustment means no metal parts make contact. We offer restricted hinges to safeguard children and other vulnerable people.

Stainless Steel Friction Stays

We test the durability and weather resistance of our installations through thousands of cycles. Choose ferritic 430 or austenitic 304 stainless steel for ultimate corrosion resistance.

Bespoke Hardware Choices

All our bespoke hardware comes in a variety of colours to complement any interior design. They are also supported by a ten year guarantee, promising their longevity.

Leading Locking Systems

Our high security multi point locking systems offer leading protection against forced entry. Additional bolts deliver enhanced stability and prevent hinge attacks.

Trickle Vents

Trickle vents are available in both aluminium and uPVC vents. They are compliant with latest regulations and can be delivered detached to avoid damage.

Weather Resistant

Our engineered casement windows are weather resistant, making draughts, cold spots and mould a thing of the past when you choose JWS double glazing!

Docking System Bolt

Our profile features a patent bolt that prevents sideways movement, reinforcing the window for a secure fit and hindering intruders.

Advanced Shoot Bolt

Our advanced heavy duty bolt has up to 300% greatest contract area compared to competitor shoot bolts.

Long Wearing Hardware

Our hardware is salt and spray resistant (BSEN1670) and has been cycle tested over 50,000 times for long wearing performance.


We strive to create flush casement windows that can suit any style or size property. Whether you have a traditional cottage, modern bungalow or newly built townhouse, we have something to complement your home. You can design a bespoke window that reflects your taste to a tee.

Why choose JWS?

1 - Expert Window Fitters

Our team of window fitters in St Helens are highly trained, with years of experience in the industry. They can install your flush casement windows efficiently and professionally. All instalments are finished to the highest standard.

2 - Customer Care

Our customer satisfaction is in the centre of everything we do. Our Merseyside based office staff will keep you informed from the moment you make an order until the moment the installation is complete. We will resolve any issues and answer any question as quickly as possible.

3 - Leading Suppliers

We will only offer the best products to our customers. We work with industry leading suppliers and manufacturers to ensure we use the best quality materials in the market. We choose leading designs with thermal efficiency and a long lifespan.


Prices for Flush Casement Windows in St Helens

Use our online quoting engine today to get an estimated price for flush casement windows. Our quoting engine is free to use and works on all devices.

Alternatively, if you would rather get in touch with us over the phone, please call 01744 747030. If you leave your details and measurements in our online form, we can reach out to you with a quote on our flush casement windows.

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