VS TYPE 1 –
Lead time 12 working days
Supply & Install staring from:
£999 + VAT
Vertical Sliding Sash Windows
Classic Design with Vertical Sliding Functionality
Sash windows, also known as vertical sliders, are a timeless window style that combines classic aesthetics with modern performance. Available in uPVC, aluminium, and timber, these windows offer excellent versatility and are suitable for both traditional and contemporary properties. At UGS Ltd, we provide both standard and made-to-measure sash windows to suit a wide range of project requirements. With full customisation options—including glazing, finishes, hardware, and profiles—we ensure each window is tailored to your preferences. Whether for new builds or refurbishments, our sash windows deliver durability, energy efficiency, and elegant design with expert supply and installation services.
Sash Windows by UGS Ltd
UGS Ltd provides both supply and installation, as well as supply-only services, for premium sash windows, crafted in the UK and Europe. As a direct supplier, we offer sash windows in a range of materials, including uPVC, aluminium, and timber (both softwood and hardwood), with various styles and profiles available to suit your needs and preferences.
We deliver customised solutions tailored to your project’s requirements and budget, with a focus on quick delivery and top-quality installation. At UGS Ltd, we prioritise functionality, style, and long-lasting durability in every sash window we provide.
Our certifications
Catalog
VS TYPE 2 –
Lead time 12 working days
Supply & Install staring from:
£999 + VAT
VS TYPE 3 –
Lead time 12 working days
Supply & Install staring from:
£999 + VAT
Our warranties: Up to 25 year warranty across all product ranges
Vertical Sliders (Sash Windows) by Material
uPVC Timber-look Window Collection
Timber-look uPVC windows replicate the appearance of traditional timber while offering superior insulation and minimal upkeep. This range includes Heritage Flush Sash, Flush Casement, and Bay & Bow windows, combining classic style with the benefits of modern materials and durability.
uPVC Vertical Sliders
uPVC vertical slider windows replicate the traditional sash style with modern benefits, offering excellent energy efficiency and smooth sliding operation. Low-maintenance and durable, they combine classic charm with practical performance, ideal for homeowners seeking heritage looks without the upkeep.
Alu Vertical Sliders
Aluminium vertical slider windows deliver a sleek, contemporary interpretation of the sash design with slim, strong frames. Highly durable and low-maintenance, they offer smooth functionality, excellent security, and long-lasting performance, perfect for modern projects that value light and minimalist lines.
Timber Vertical Sliders
Timber vertical slider windows provide authentic period character with superior craftsmanship and insulation. Customisable and elegant, they suit listed or heritage properties beautifully, requiring regular care to maintain their natural finish and timeless appeal for years to come.
Manufacturers list
Profile
At UGS Ltd, we supply and install sash windows in two distinct profiles—Standard and Slim—each offering a unique blend of style and performance. Available in uPVC, aluminium, and timber, every profile is tailored to suit different architectural styles and homeowner preferences.
Standard Profile
At UGS Ltd, we work with industry-leading manufacturers such as Cortizo, Deceuninck, Kommerling, Rehau, Reynaers, Schüco, and SMART to offer high-quality vertical sliding sash windows in uPVC, aluminium, and timber.
Standard profile depths typically measure around 70mm in uPVC, 75–80mm in aluminium, and approximately 78mm in timber, depending on the chosen system. These robust profiles provide the structural integrity needed for smooth sliding operation while preserving the classic appearance of traditional sash windows.
Standard profiles are designed to replicate the elegant lines of original box sash windows, making them ideal for both heritage properties and modern homes seeking a timeless look. Their thicker frame allows for enhanced thermal and acoustic insulation, helping to reduce energy bills and maintain comfort throughout the year.
This profile also supports high-security features, such as reinforced frames and multi-point locking options, providing peace of mind without compromising aesthetics. In addition, the standard design can accommodate double or triple glazing, offering flexibility in performance and budget.
Whether restoring period charm or adding a touch of tradition to a new build, standard profile vertical sliders deliver a perfect blend of strength, efficiency, and style. At UGS Ltd, we offer both supply-only and full installation services, tailored to suit your project's specifications and requirements.
Slim Profile
Slim profile vertical sliding sash windows offer a refined, elegant look with narrower frame sections that maximise glazing and natural light. Typically, slim profiles measure around 60–70mm in uPVC, 60–72mm in aluminium, and approximately 68mm in timber, depending on the system and material used.
These profiles are particularly suited to conservation areas, listed buildings, or projects where maintaining period aesthetics is essential. Designed to replicate the fine sightlines of traditional timber sash windows, slim profiles provide a more delicate appearance while meeting modern performance standards.
Despite the reduced frame width, slim profile sash windows offer excellent thermal insulation, soundproofing, and durability—especially when paired with double or triple glazing. Their slimmer construction also enhances the visual balance of the window, allowing the glazing to take centre stage while still providing reliable function and structural support.
Slim profiles do not compromise on security, with robust locking mechanisms and high-quality materials offering protection and peace of mind. They also allow for a high degree of customisation, including finishes, sash horn styles, and hardware options.
Ideal for homeowners, architects, and developers seeking to retain traditional character with modern efficiency, slim profile vertical sliders combine authentic charm with contemporary performance—making them a smart and stylish choice for both restoration and new-build projects.
At UGS Ltd, our sash windows (vertical sliders) are available with both double and triple glazing options to provide superior energy efficiency and comfort for your home. Whether you choose double or triple glazing, both offer excellent thermal insulation and noise reduction, making your home more comfortable and energy-efficient year-round. For enhanced performance, our glazing units can be filled with argon gas, an inert gas that increases thermal efficiency by reducing heat transfer through the glass. Argon-filled windows also help to reduce condensation buildup and improve overall energy savings, ensuring a warm, comfortable environment while lowering energy bills. For character properties or listed buildings where replacing the original windows is not possible, secondary glazing units are the ideal solution. They preserve the exterior charm while significantly improving insulation and noise reduction. To learn more, visit our Secondary Glazing Unit page for more details on how this can be the perfect upgrade.
Double Glazing
- Energy rating A+
- R value 1.2-1.6 W/m2*K
- U value 1.2
- G value 0.71
Tripple Glazing
- Energy rating A++
- R value 0.7-1.0 W/m2*K
- U value 0.9
- G value 0.61
Argon Filled
- Energy rating Improved
- R value Up to 30% higher
- U value Up to 25–30% lower
- G value no signifficant affect
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.
Vertical Slider/ Sash Openings
Openers at Upper & Lower Pane
uPVC/ Aluminium/ Timber
Profile
- Standard
- Slim
Finish / Colour
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All RAL colours
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White
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Black
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Anthracite grey
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All RAL colours - Dual
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All effects and Textures
Glazing Options
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Single
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Double
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Tripple
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Argon filled
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Variety of spacer bars options
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Variety of Solar controls options
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Variety of Self Clean options
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Integral Blinds
All Pilkington range
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Transparent
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Frosted
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Warwick
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Chantilly
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Reeded
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Digital
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Taffeta
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Oak
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Contora
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Charcoal Sticks
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Floirelle
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Mayflower
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Pelerine
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Everglade
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Cassini
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Tribal
Additional Glazing Designs
Add Traditional Character to your windows.
- Astragal
- Georgian
- Leaded
- Diamonds
Hardware
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All Sash Locks Options
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All Sash Lifts Options
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All Pole Eye Options
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Sash Lock Satin Chrome
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All Ventilation Options
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All Tilt Latch Options
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All Integrated Blinds
Shash Horn Options
- No Sash Horn
- Top Only
- Top & Bottom
- Bottom Only
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 windows and doors 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.
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!
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.
Others Window Types
Vertical Sliders (Sash Windows) gallery
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.
We offer a standard 10-year manufacturing warranty on our sash windows. If required by the contract, this warranty can be extended up to 25 years.
Yes, we are UKAS registered and certified via ASSURE UKAS certification. This is equivalent to FENSA certification, as FENSA is UKAS's internal certification, while ASSURE is the external certification. Both certifications hold the same validity.
We provide sash windows in a variety of materials, including timber, uPVC, and aluminium. Each material offers unique benefits, such as enhanced insulation or durability, and can be customised to suit the style of your property.
Yes, our sash windows can be fitted with double glazing, offering improved insulation, soundproofing, and energy efficiency, while preserving the traditional aesthetic of the windows.
Yes, our sash windows are designed for easy maintenance. We use high-quality materials and finishes to ensure longevity and provide easy-to-clean mechanisms. Regular maintenance can help extend their lifespan and performance.
Yes, we specialise in both the restoration of original sash windows and the creation of bespoke replacements that match the historical style of your property. Our skilled team can help restore your windows or design new ones that blend seamlessly with your existing architecture.
Blog
How to Choose a Window Style That Matches Your Property?
We look at the UK's favourite window types, covering how each of them works, what they look like, and where they perform best. When you're done, you'll have a shortlist in mind and the confidence to specify which style is for you.
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