uPVC Timber-look Flush Windows

Innovation that You Will Love

The rapid advancement of technology and materials has led to the development of more energy-efficient, durable, and secure windows with improved recyclability. However, looking back at traditional designs allows us to preserve the charm of architectural heritage while integrating modern benefits. Our Timber-look collection offers flush Sash, Casement and Bay&Bow windows.

More affordable than real wood, they enhance both the comfort and aesthetics of any property. Thanks to modern materials and manufacturing techniques, they offer superior insulation and require minimal upkeep.

While real timber is undeniably beautiful, it is prone to swelling, shrinking, warping, and twisting due to weather conditions. Maintaining wooden frames is both costly and time-consuming, whereas Timber-look Heritage windows retain their appearance without the need for ongoing maintenance. Their flush exterior, combined with a classic mortise and tenon-style finish, replicates the elegance of heritage casement windows while incorporating modern efficiency. With a diverse range of period colours and textured wood-effect finishes, Timber-look windows complement various property styles. Request you Free Quote Now.

Authentic Design with Modern Performance

Explained

With features such as an optional deep bottom rail and concealed external
trickle ventilation, the external appearance of Timber-look Flush Sash
Windows is almost indistinguishable from premium flush timber frames.
Designed to replicate traditional craftsmanship, this uPVC Flush Sash Window.

Timber-look Fush Casement windows closely resemble traditional timber frames but come with significant advantages of uPVC. System incorporates a square mortise and tenon-style fabrication for both
the sash and outer frame, eliminating the visible mitred joints typically
associated with uPVC windows.

  • PAS24
  • Patented Timberweld Technology
  • Concealed Trickle Wents
  • U-Value as low as 1.2W/m2k

Our warranties: Up to 25 year warranty across all product ranges

Standard 10 years product warranty on all units

For supply & installation services only Up to 25 years product warranty upon request

Special-purpose glass types

Timber-look Flush Sash Casement Windows

Timber-look Flush Sash Casement Windows

Timber-look flush sash casement windows provide an authentic heritage appearance with the benefits of modern uPVC. The sash sits level with the frame for clean sightlines that replicate traditional timber joinery. Mechanical Timberweld-style joints, high-performance glazing, and PAS 24 security options ensure strong performance and safety. With U-values as low as 1.2 W/m²K, they offer excellent insulation and minimal maintenance. A wide range of colours, wood-grain foils, cill choices, and heritage hardware allows precise styling for period and contemporary homes.

Timber-look Flush Sash Bay & Bow Windows

Timber-look Flush Sash Bay & Bow Windows

Timber-look flush sash bay and bow windows combine period aesthetics with modern uPVC efficiency, creating a striking architectural feature. Their outward projection increases natural light, enhances views and adds interior space, while flush sightlines and traditional-style joints replicate classic timber frames. High thermal performance, concealed trickle vents, and PAS 24 security options support modern living standards. Available in multiple colours, foiled finishes, and cill depths, they suit both heritage properties and new builds, delivering charm, durability, and low-maintenance appeal.

Wide Range of Options

Wide Range of Options

At UGS Ltd, we customise Timber-Look windows and doors to suitany home or project. Choose between the sleek contemporary shallow cill or the elegant Radlington Cill for a refined touch. Enhance your windows with Astragal, Georgian, or Leaded bars, and opt for double or tripple glazing for added efficiency. A range of hardware finishes ensures a perfect match for any style. Available in single or dual colours, our units offer a vast palette for both classic and modern designs. UGS Ltd combines quality craftsmanship with complete personalisation.


Customisation Features

Personalise Your Windows with UGS Ltd.

At UGS Ltd, you can fully personalise your windows with direct manufacturer options, from opening styles to accessories—we’re here to guide you every step of the way. Book your one-on-one Zoom call and design your perfect units in real-time. Using the latest visual technology, we’ll not only help you create your custom windows but also provide a sneak peek of how they’ll look once installed at your property.

Flush Casements/ Bay & Bow

  • Side hung - left

    Side hung - left

  • Side hung - right

    Side hung - right

  • Push out opening

    Push out opening

  • Dummy/ Fixed

    Dummy/ Fixed

Cills

  • Cills - 85mm

    Cills - 85mm

  • Cills - 150mm

    Cills - 150mm

  • Cills - 180mm

    Cills - 180mm

  • Radlington 165mm

    Radlington 165mm

Finish / Colour

  • White

    White

  • Anthracite Smooth

    Anthracite Smooth

  • Anthracite Woodgrain

    Anthracite Woodgrain

  • Black Foil

    Black Foil

  • Chartwell Green

    Chartwell Green

  • Cream Foil

    Cream Foil

  • Golden Oak

    Golden Oak

  • Irish Oak

    Irish Oak

  • Painswick

    Painswick

  • Rosewood

    Rosewood

  • Polar White

    Polar White

Glass

  • Single

    Single

  • Double

    Double

  • Tripple

    Tripple

  • Argon filled

    Argon filled

  • Variety of spacer bars options

    Variety of spacer bars options

  • Variety of Solar controls options

    Variety of Solar controls options

  • Variety of Self Clean options

    Variety of Self Clean options

  • Integral Blinds

    Integral Blinds

All Pilkington range

  • Warwick

    Warwick

  • Chantilly

    Chantilly

  • Reeded

    Reeded

  • Digital

    Digital

  • Taffeta

    Taffeta

  • Oak

    Oak

  • Contora

    Contora

  • Charcoal Sticks

    Charcoal Sticks

  • Floirelle

    Floirelle

  • Mayflower

    Mayflower

  • Pelerine

    Pelerine

  • Everglade

    Everglade

  • Cassini

    Cassini

  • Tribal

    Tribal

  • Transparent

    Transparent

  • Frosted

    Frosted

Additional Glazing Designs

Add Traditional Character to your windows.

  • Astragal
  • Georgian
  • Leaded
  • Diamonds

Hardware

available in Chrome, White, Gold, Silver Satin and Gold Satin

  • Standard Handles

    Standard Handles

  • Monkey Tails

    Monkey Tails

  • Pear Drop

    Pear Drop

  • Peg / Dummy Stays

    Peg / Dummy Stays



Timber-look uPVC Window Glazing Options

At UGS Ltd, uPVC Timber-Look windows are available with both double and triple glazing. Every unit comes with argon gas filling as standard, ensuring excellent energy efficiency, reduced heat loss, and improved comfort throughout your home.

Double glazing option

Double Glazing

  • Energy rating A+
  • R value 1.2-1.6 W/m2*K
  • U value 1.2
  • G value 0.71
Tripple glazing option

Tripple Glazing

  • Energy rating A++
  • R value 0.7-1.0 W/m2*K
  • U value 0.9
  • G value 0.61
Argon filled glazing option

Argon Filled

  • Energy rating Improved
  • R value Up to 30% higher
  • U value Up to 25–30% lower
  • G value no signifficant affect

*Energy Rating show overall energy efficiency of the product. The entire window (the frame and the glass) is assessed to allow for heat loss, draughts and solar gain, giving a rating that indicates the overall impact of fitting that window in your home.
*The R Value Measures resistance to heat gain or loss. Example, a typical insulated wall has an R-value anywhere from 12 to 19.
*The U Value of the glass tells us heat loss through the glass, the glass edge and the frame.
*The G Value of the glass tells us how well the glass transmits heat from the sun.


Relevance and Compliance

Conservation & Planning

When developing the Timber-look glazing system, careful attention was given to the Article 4 Conservation Area Guidelines for Windows. By combining these principles with modern technology and cost-effective materials, we have created secure, energy-efficient products that retain the traditional charm of period properties.

Local authorities are increasingly approving Timber-Look Flush Sash Windows for use in conservation areas and listed buildings. More and more councils recognise their authentic appearance, acknowledging that they successfully replicate traditional flush casements while maintaining key heritage details such as the cill and trickle ventilation. Their design ensures a seamless blend of classic aesthetics with modern performance, making them a preferred choice for heritage projects.

New Build Projects

When selecting windows and doors for a new-build property, they must comply with current building regulations, whether for a single home or a larger development.

Timber-look windows meet Document Q standards, having undergone independent testing. With enhanced glass and hardware, they are also PAS24 certified, ensuring they meet security requirements set by building inspectors.

As these are separate standards, if not installed by UGS Ltd, it is essential to discuss them with your local installer when specifying your project.


Frequently Asked Questions (FAQ)

Please note that the information provided here is subject to change. For the most up-to-date details, we recommend contacting our company directly.

Article 4 is a planning regulation used by local councils to remove certain Permitted Development Rights in conservation areas or areas of special interest. If Article 4 applies to your area, it means you may need planning permission for changes that would normally not require it - such as replacing your windows.

Yes, we are UKAS certified through ASSURE and provide UKAS certificate on completion. 

They use flush-sash profiles, butt-joint or mortise & tenon style corner detailing, wood-grain foils and slim heritage hardware to closely match the appearance of real timber windows. 

No — unlike timber, timber-look uPVC windows resist warping, rotting and need little more than an occasional wipe-down to stay in good condition. 

Yes — many timber-look windows achieve U-values as low as around 1.2 W/m²K and come with multi-point locking systems that meet standards such as PAS 24, making them thermally efficient and secure.

Timber-look windows are high-quality uPVC frames designed to replicate the appearance and sight-lines of traditional timber windows, while benefiting from modern materials and performance.

Yes — they are approved for many conservation areas because they mimic traditional timber aesthetics, yet provide the durability, efficiency and low maintenance of modern uPVC.


Related Products



Special offers for our customers

Mix and match package discounts on all product ranges – all year round

  • For packages over £10k – get 5% discount
  • For packages over £20k – get 10% discount
  • For packages over £25k – get 15% discount
Get in Touch

No- obligation visit, no-obligation advice - Ultimate Solution

During our on-site surveying visit, we bring your designs to life by demonstrating various unit options, helping you visualise the perfect units for your space. This ensures you make informed decisions based on real-time insights and expert recommendations.

Not sure what you need or require expert advice for your project? No problem! We offer a no-obligation surveying service and professional guidance. Our team will visit your property, discuss your requirements, and recommend the best solution to suit both your space and budget. Contact us today to arrange your consultation.

Book FREE Surveying

On-Site Visualisation & Design – Surveying Visit Benefits

Turn your ideas into reality with our interactive visualisation service, available during your surveying visit. Using an iPad, our surveyor will draw your windows and doors in real time, transforming them into detailed, live models. This hands-on approach allows you to explore different specifications, colours, and accessories right there and then, ensuring every detail is tailored to your preferences.

Once your units are designed, we can apply them to front and back images of your property, giving you a clear preview of the final look before installation. This innovative service ensures that your new windows and doors seamlessly complement your home’s aesthetic, providing confidence in your choices before placing an order.

📅 Book your surveying visit today and experience the future of home design—right at your doorstep!

Book FREE Surveying
Surveying Visit Benefits

Why Our Design & Visualisation System Stands Out

Our advanced design platform takes the guesswork out of ordering. With just a few clicks, we can showcase:

  • ✅ A wide range of styles, finishes, and configurations tailored to your needs
  • ✅ Instant visualisation of how different options will look in your home or office
  • ✅ Real-time pricing and customisation for a smooth, efficient experience

It’s fast, fun, and hassle-free — all designed to put your preferences at the forefront of the process.

At UGS Ltd, you don’t just imagine your perfect space — you see it come to life before your eyes.


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