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Timberlook Flush Sash Windows by Ultraglaze

Introducing Timberlook’s cutting-edge wood-effect uPVC windows – the perfect fusion of timeless elegance, high performance, and modern innovation for today’s discerning homeowner.

Designed as a superior alternative to traditional timber, these wood-effect uPVC windows provide exceptional energy efficiency, enhanced security, and minimal maintenance without compromising on style.

Their authentic appearance makes them an ideal choice for period and heritage properties, with the added benefit of being approved for use in conservation areas.

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Not just any Flush window system.

Timberlook flush sash windows embody the charm of classic window designs, making them a superb option for everything from historic structures to modern dwellings. Our uPVC windows, designed to replicate the traditional beauty of wood, provide significant benefits over genuine timber.

Leveraging advanced materials and technology, our uPVC windows retain the aesthetic of traditional timber while offering superior thermal performance and security. Available in a range of styles, including the attractive anthracite grey and light oak finishes, they are also more cost-effective than real wood.

Timberlook windows are not only ideal for heritage sites and conservation areas but are also perfectly suited for modern homes, where our flush casement windows add a touch of elegance with their sleek, understated design.

Timberweld®

Timberlook Timberweld is a patented technology that provides uPVC windows with the authentic look of traditional timber through seamless joints, enhancing both aesthetics and performance.
It offers superior thermal efficiency, security, and weatherproofing, ideal for historic properties and conservation areas
Ovolo Retro Detail

An ovolo internal frame on our Timberlook Flush Casement Windows features a softly curved, sculpted edge , adding a touch of classic elegance and traditional character that mirrors the charm of authentic timber.
This distinctive profile enhances the visual appeal of your windows, expertly replicating the warmth and texture of natural wood through advanced Timberlook finishes, all while delivering modern strength and energy efficiency.
Fully Mechanical Joints

We offer fully mechanical Ovolo joints as a bespoke service, providing an authentic timber-like appearance with precision-engineered detailing for a premium, handcrafted finish. This specialized option enhances the aesthetic appeal of your aluminium patio doors, seamlessly blending traditional craftsmanship with modern durability.
Our skilled technicians meticulously craft each joint to ensure a flawless fit and superior strength
Concealed Ventilation

Timberlook windows incorporate concealed hood ventilation systems that blend seamlessly into the window design, maintaining the traditional aesthetic while providing effective air circulation.

This technology ensures that the windows offer both the charm of timber and modern functionality.es here
Secured by Design

Secured by Design products are meticulously crafted with advanced security features and are proudly certified to meet the rigorous standards set by the Association of Chief Police Officers, ensuring top-tier protection for your home or property.
This prestigious accreditation highlights our commitment to safety, offering peace of mind with the inclusion of laminated security glazing, which provides an additional layer of strength and resistance against potential break-ins.

Astragal or Georgian Detailing

Astragal bars are elegantly applied to the internal and external surfaces of the glazing, creating the authentic appearance of traditional multi-pane period windows.

These bars are fixed onto a single sealed glazing unit, artfully simulating the division of multiple smaller panes to deliver a timeless, classic aesthetic. For an even more refined heritage look, astragal bars are also available in a Georgian detail.

Attention to detail

Aged Antique Leadwork

Aged antique leadwork is available on our UPVC windows, expertly applied to evoke the charm of historic glass.

This premium decorative feature is offered in a variety of authentic configurations, including heritage rectangles and classic diamond grids, seamlessly integrated within the sealed glazing unit to deliver timeless elegance with the durability and low maintenance of modern UPVC.

Radlington Cill

Our windows and doors are supplied as standard with a sleek, contemporary 30mm-deep cill. For those who desire an even more authentic timber-effect appearance, the optional Radlington Cill offers the perfect upgrade.

Standing at 55mm tall, the Radlington Cill features a deeper profile that captures the character of traditional timber window design while complementing modern aesthetics. It’s the ideal choice for anyone looking to achieve a truly genuine and authentic finish for their windows and doors.

Functional & energy efficient

“A” Energy Rated

Timberlook Flush Sash Window System delivers outstanding thermal performance with double-glazed sealed units, achieving a standard U-value of 1.4 W/m²K for excellent energy efficiency right from the initial configuration.

Central to this efficiency is our advanced multi-chamber profile design, incorporating precisely engineered chambers that capture warm air to establish a formidable thermal barrier within the 70mm frame depth—effectively mitigating cold, draughts, and moisture to ensure superior insulation and enhanced comfort.

For superior performance, upgrading to triple glazing further enhances energy efficiency, offering even better thermal retention while preserving the authentic heritage aesthetic.

Peace of mind is assured with all locking systems backed by a 10-year guarantee against mechanical failure, guaranteeing long-term reliability and security.

Planning & Conservation with Timberlook?

Our Timberlook Flush Sash Windows and Doors are expertly designed to meet the stringent requirements of planning permissions and conservation regulations, making them an ideal choice for heritage properties and conservation areas. With authentic features like ovolo sashes, chamfered edges, and the optional Radlington cill, these windows replicate the classic aesthetics of traditional timber frames, ensuring compliance with local heritage guidelines.

The 70mm frame depth and Timberweld technology provide a mechanical finish with mortise and tenon detailing, offering a seamless blend of historical charm and modern durability.

Crafted in the UK with a focus on precision, these windows are approved for use in listed buildings and conservation projects, balancing architectural integrity with contemporary performance.

Compliance guaranteed

As a trusted installer of premium windows, we view quality as an ongoing commitment that demands constant attention and care.

Quality Hardware you can trust

Shootbolt Locking

Our windows are equipped with shootbolt locking as standard, delivering robust, multi-point security to keep your home protected year-round.
Stainless Steel Hinges

Our windows feature stainless steel hinges as standard, engineered for exceptional durability, corrosion resistance, and smooth operation.
2-Stage Vent Lock

Our windows are fitted as standard with a 2-stage vent lock, providing secure night ventilation and child-safe restricted opening for enhanced safety and peace of mind.
Hinge Protection

Optional upgrade: Anti-jemmy hinge protection - stainless steel guards that reinforce hinge security, significantly increasing resistance to forced entry and providing ultimate peace of mind.
Heritage Handles

Heritage-style window handles—elegantly crafted to replicate classic period designs, available in a choice of premium finishes .
Fab & Fix Handles

Fab & Fix handles—premium, British-manufactured hardware renowned for its superior strength, ergonomic design, and extensive range of styles and finishes.

Woodgrain colour options

Our uPVC Casement Windows are available in standard woodgrain colourways, including dual-foil options, providing a wide range of choices to complement any home style.

Each window is finished using high-quality Renolit Exofoil, a premium material that delivers a durable, weather-resistant surface with a glossy, realistic timber effect.

This finish not only enhances the aesthetic appeal of your windows but also ensures long-lasting performance with minimal maintenance.

The realistic woodgrain texture captures the character and charm of traditional timber, bringing warmth and elegance to your property.

For a truly personalised touch, you also have the option to select a bespoke colour of your choice, allowing your windows to reflect your individual style while maintaining their classic sash window appearance.

Don’t see it , rest-assured we can manufacture it.

Premium Glass Options as standard

Flemish

Level 1
Minster

Level 2
Sycamore

Level 2
Stippolyte

Level 4
Arctic

Level 5
Cotswold

Level 5

French Windows

French windows are defined by their timeless configuration—a pair of casement windows that open outward from the centre.

This classic style can be seamlessly incorporated into any of our premium window profiles, giving you unparalleled design flexibility.

Whether you prefer sleek modern lines, traditional aesthetics, or heritage-inspired detailing, French windows offer a versatile and elegant solution to enhance light flow, ventilation, and visual appeal in any room.

Bow and Bay Windows

Bow and bay windows transform your home by adding character, space, and abundant natural light.

These elegant features create a stunning focal point both inside and out, while bow and bay windows deliver exceptional kerb appeal, seamlessly enhancing the architectural beauty and interior ambiance of any property.

Pick from any RAL Colour

Our uPVC Windows can be spray finished in any RAL Colour.

This process provides a durable, long-lasting surface that resists fading, chipping, and weathering while offering a smooth, even appearance.

With hundreds of RAL shades to choose from — including matte, gloss, and textured options — you can perfectly match your windows to your property’s style or branding.

Still not sure about our uPVC Casement Windows?

This FAQ section focuses on our Casement windows, providing detailed information on their design, cost, energy efficiency, and value.

Whether you're renovating your home or just browsing window options, our responses are designed to give you the crucial details to help you decide.

Still not sure?
Give us a call.

A casement window is a hinged window that opens outward like a door, providing full ventilation and unobstructed views. Ideal for modern homes, they offer excellent airflow and are operated by a simple crank handle.
We can use any market-leading uPVC Window Profile on your project.

Just because it’s not on here , doesn’t mean you can’t have it!
Yes—Our casement windows achieve U-values as low as 0.93 W/m²K with triple glazing. Multi-chambered profiles and advanced sealing reduce heat loss by up to 30% compared to standard windows.
Virtually maintenance-free. uPVC casement windows require only occasional cleaning with warm soapy water.
No painting or repainting needed—guaranteed for 10 years against discolouration.
Absolutely. Choose from 20+ frame colours, multiple glazing options, hardware finishes (chrome, gold, black), and glazing patterns.
We can offer any bespoke size.
Yes, our certified installers provide full-service installation across the UK. FENSA registered with 10-year insurance-backed guarantees on both product and workmanship.
Of course.
Contact our expert team for free consultations, home surveys, and 3D visualisations.
We'll guide you through options and provide no-obligation quotes tailored to your property.

Download our brochure…

Download our brochure to explore the full range of our exquisite window designs, detailed specifications, and discover how our products can enhance your home's beauty and efficiency.

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