VS TYPE 1 –
Lead time 12 working days
Supply & Install staring from:
£999 + VAT
Vertical Sliding Timber Sash Windows
Graceful Tradition that Built to Last
At UGS Ltd, our timber sash windows (also known as vertical sliders) offer a timeless, authentic option for homeowners who appreciate natural beauty and classic detailing. Timber is cherished for its traditional charm, sustainable qualities, and excellent thermal performance, making it a superb choice for vertical sliding windows. With their smooth operation and heritage appeal, timber vertical sliders provide elegant ventilation, reliable security, and historical integrity—ideal for period homes and suitable for sensitive conservation areas.
Timber sash windows offer inherent insulation properties and can be enhanced with energy-efficient glazing to reduce heat loss and improve comfort. When well-maintained, they deliver exceptional longevity, adding long-term value and warmth to your home. Their traditional proportions and bespoke craftsmanship allow for a faithful restoration of heritage aesthetics, while still providing modern benefits such as noise reduction and improved efficiency—bringing natural materials and modern comfort together in perfect harmony.
One of the main advantages of timber is its natural beauty, excellent insulation properties, and suitability for heritage settings, making it a durable and characterful choice. Timber sash windows require periodic care, but with proper maintenance, they retain their charm and functionality for decades. Available in a range of finishes, stains, and paint colours, timber vertical sliders can be customised to complement both traditional and contemporary architectural styles.
At UGS Ltd, we offer high-quality timber sash windows that blend classic design with lasting performance. These vertical sliders are crafted with care and built to modern standards, offering robust frames and optional security upgrades for added peace of mind. Whether you’re restoring a listed property or seeking a refined aesthetic for a new build, timber sash windows provide the perfect balance of authenticity, comfort, and enduring appeal.
Premium Quality Timber Sliders
by UGS Ltd.
At UGS Ltd, we offer both supply-and-installation and supply-only services for premium sash windows, all expertly crafted in the UK and Europe. As a direct supplier, we provide a wide selection of sash window styles, available in both standard designs and fully customised solutions. Whether you require standard sizes or bespoke dimensions, our sash windows are tailored to meet the specific needs of your project.
We specialise in delivering personalised solutions that align with your budget and project goals, while ensuring fast delivery and professional installation. Every window we supply is designed to blend functionality, timeless elegance, and long-lasting durability. Our dedication to quality ensures that your windows will not only look stunning but will also perform reliably for years to come.
As a UKAS-accredited company through ASSURE, we provide a standard product guarantee starting from 10 years, giving you confidence and peace of mind in the durability of our products.
At UGS Ltd, we stay at the forefront of industry trends and utilise advanced technology to optimise our processes, reduce costs, and enhance your overall experience. With our innovative design and visualisation tools, we work closely with you to ensure the perfect solution, all while offering convenience and comfort throughout the project. There’s never any pressure to buy, and we prioritise clear communication at every stage, ensuring you achieve the best possible results and are completely satisfied with our work.
You’ll love what we do at UGS Ltd. Request your Free Quote Now.
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
Timber Sash Windows
Material & Profile
At UGS Ltd, we supply and install Timber Sash windows in both Soft and Hardwood. In two distinct profiles—Standard and Slim (spring-balanced)—each offering a unique blend of style and performance.
Hardwood
At UGS Ltd, we specialise in high-quality timber hardwood windows, crafted from durable and beautiful wood species. Our hardwood windows are made from premium materials, including Oak, Sapele, and Accoya, each known for their strength, longevity, and natural aesthetic appeal.
• Oak: A traditional favorite, Oak is prized for its rich grain, durability, and resistance to wear. It offers a timeless, classic look that enhances both modern and period properties.
• Sapele: This African hardwood is known for its strength and stability, with a fine, attractive grain and a reddish-brown hue. It is highly resistant to weathering and a great choice for long-lasting windows.
• Accoya: Accoya is a sustainable, modified wood known for its exceptional durability and resistance to rot, even in harsh climates. It’s dimensionally stable, meaning it won’t warp or swell, making it ideal for precision-crafted windows.
Benefits of Hardwood Windows Compared to Softwood Hardwood windows offer several advantages over softwood alternatives:
• Durability: Hardwood is naturally more resistant to wear, weather, and damage, making it an excellent long-term investment. It requires less maintenance over time compared to softwood.
• Longevity: The density of hardwoods like Oak, Sapele, and Accoya ensures that your windows will last for decades with minimal upkeep.
• Aesthetic Appeal: Hardwood windows offer a richer, more luxurious appearance due to their natural grain patterns and color variations. They can be finished to highlight the wood’s natural beauty or painted for a customised look.
• Weather Resistance: Hardwood, especially species like Accoya, performs exceptionally well in all weather conditions, offering superior protection against warping, swelling, and decay.
While softwood windows may be more affordable upfront, hardwood windows provide greater strength, longevity, and aesthetic value, making them a more sustainable and premium option for your home.
Softwood
We offer high-quality timber softwood windows made from sustainably sourced wood species such as Pine, Douglas Fir, and Scandinavian Redwood. These materials are popular for their affordability, ease of working, and attractive finishes, making them an excellent option for a variety of property styles.
• Pine: A versatile and cost-effective option, Pine is widely used for softwood windows. Its light color and fine grain make it easy to paint or stain, providing flexibility in design.
• Douglas Fir: Known for its strength and stability, Douglas Fir has a straight grain and pale reddish color. It’s an excellent softwood option for windows, offering a balance between durability and affordability.
• Scandinavian Redwood: This slow-grown wood is denser than many other softwoods, making it a durable choice. Its light color and smooth texture allow for a high-quality finish, whether painted or stained.
Benefits of Softwood Windows Softwood windows offer several advantages, particularly in terms of affordability and ease of customisation:
• Cost-Effective: Softwood is generally more affordable than hardwood, making it a budget-friendly option without compromising on the appearance or functionality of your windows.
• Lightweight and Easy to Work With: Softwood is easier to shape and machine, allowing for more intricate designs and quicker installation.
• Customisable Finishes: The lighter color and finer grain of softwood make it highly adaptable to a variety of finishes. Whether you want a natural look with stain or a painted finish to match your home’s style, softwood is versatile and easy to personalise.
• Sustainability: Softwood species like Pine and Scandinavian Redwood are fast-growing and often sourced from sustainably managed forests, making them an environmentally friendly option.
Comparison to Hardwood
While softwood windows may not offer the same durability and weather resistance as hardwood, they are lighter and more cost-effective, making them ideal for projects where budget or design flexibility is a priority. Softwoods generally require more maintenance than hardwoods, but with proper care, softwood windows can still provide many years of reliable service.
Softwood windows are a fantastic choice for homeowners seeking a beautiful, affordable, and versatile window solution.
Standard
Standard profile timber sash windows offer a refined balance between traditional design and modern-day performance. Designed to replicate the classic aesthetics of period joinery, the standard profile is an ideal choice for homeowners restoring heritage properties or wishing to incorporate timeless character into newer builds. Typically, this profile features a frame depth of 68mm to 80mm, complete with traditional ovolo or lamb’s tongue detailing, and slim meeting rails that enhance the authentic appearance of the windows.
Available in both softwood and hardwood options, the standard timber profile gives flexibility to suit a range of design and budget requirements. Softwood provides a smooth finish and excellent thermal performance at a more accessible price point, while hardwood varieties such as sapele or oak offer greater strength, durability, and a richer grain finish—ideal for those seeking a premium, long-lasting window.
Beyond appearance, the standard profile is engineered for efficiency and longevity. It is compatible with double glazing or slimline heritage glazing, delivering excellent thermal insulation and improved soundproofing. High-performance draught seals further enhance the comfort of your home, helping to reduce heat loss in winter and maintain cooler interiors in summer.
Timber’s natural insulating properties, combined with modern construction methods, contribute to a quiet, energy-efficient living environment. With regular maintenance, timber sash windows can last for decades, offering both visual charm and long-term value. Each unit can be factory-finished in a wide selection of painted or stained finishes, allowing for a fully bespoke result that reflects your property’s character and your own design preferences.
Slim (Spring-balanced)
Our slim (spring-balanced) profile timber sash windows offer a contemporary interpretation of the classic vertical slider, ideal for projects where space, clean sightlines, and modern functionality are a priority. Unlike traditional sash windows that operate using cords and weights, this profile uses a spring-balanced mechanism, allowing for a slimmer frame depth—typically between 55mm and 65mm. The result is a more compact design, perfectly suited to narrow reveals, modern refurbishments, or spaces where a more minimal aesthetic is preferred.
Despite the reduced frame size, slim profile sash windows retain the authentic charm of timber, available in both softwood and hardwood options. Softwood provides a smooth, cost-effective solution, while hardwoods such as sapele or oak offer enhanced durability and a rich, natural grain, lending a premium finish to the window.
Slim-profile vertical sliders offer smooth, counterbalanced operation and are designed for easy, low-maintenance performance. The spring-balanced system removes the need for bulky sash boxes, making these windows simpler to install—especially in modern properties or where interior space is limited.
With their narrower frames, these sash windows allow for larger glazed areas, enhancing natural light and creating a brighter, more open feel inside the home. When paired with high-performance double glazing and discreet draught seals, they provide impressive thermal efficiency and noise reduction, helping to maintain a comfortable indoor environment year-round.
Whether you are enhancing a modern extension or blending traditional materials with contemporary form, slim profile timber sash windows offer a perfect balance of heritage appeal, sleek design, and everyday practicality.
At UGS Ltd, our timber 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
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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
Profile
- Standard
- Slim (spring-balanced)
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
All Timber Windows
Timber windows deliver natural warmth and traditional charm with outstanding insulation and bespoke craftsmanship. Their classic style suits heritage or character homes, requiring periodic maintenance to preserve their beauty, making them a sustainable, timeless choice for those seeking authenticity.
Timber Bay & Bow Windows
Timber bay and bow windows bring natural beauty and heritage charm, offering superior insulation and bespoke craftsmanship. Regular maintenance preserves their character, making them the perfect choice for period homes or those seeking warmth and traditional elegance with lasting appeal.
Timber Tilt & Turn Windows
Timber tilt and turn windows provide natural warmth and a handcrafted finish, blending traditional charm with modern functionality. They deliver excellent insulation and ventilation, requiring regular care to preserve their character, ideal for period homes or bespoke architectural projects.
Timber Casement Windows
Timber casement windows bring natural elegance and outstanding insulation, crafted to complement period or character homes. Their timeless style and bespoke finish add warmth and authenticity, with regular maintenance preserving their beauty and performance for generations to enjoy.
UGS Ltd Services
DESIGNED with you in MIND
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FREE NO Obligation Surveying
is best for medium-size projects where ten or more units are required or the property is undergoing restructuring changes.
To get an exact quote and get face-to-face specialist advice, we offer surveying visits.
Book surveying appointment -
FREE Distance Quoting
great for simple supply & installation projects with fewer units
For a swift estimation, just have your units, sizes, and specs at hand.
Get your Distance Quote Today -
TURNKEY PROJECT MANAGEMENT BY UGS LTD.
Are you thinking of changing your existing units and undergoing minor property restructuring changes at the same time? Not a problem, we have trusted subcontractor team of highly qualified builders at your disposal to help you on your project.
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Free No-Obligation Zoom Call
Intruduced to support our clients in choosing the unit design. During the call we also provide a professional advice with no obligation to purchase. Pick from the diary the day and time that suits best with your schedule.
Book your ZOOM call
Timber Vertical Sliders 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.
Timber sash windows are a classic choice that combine beauty, durability, and traditional charm. They offer excellent thermal insulation, reduce outside noise, and can be easily customised to fit your property's style. Timber also provides a natural aesthetic that complements both period and modern properties, enhancing curb appeal and adding value to your home.
Timber sash windows operate on a sliding mechanism, with two vertically sliding sashes that allow for easy opening and closing. The top and bottom sashes can slide independently, offering flexibility in controlling airflow. A spring or weight mechanism ensures smooth movement, and modern timber sash windows feature improved sealing for better energy efficiency.
Yes, timber sash windows provide excellent energy efficiency. When combined with double or triple glazing, they offer great thermal insulation, reducing heat loss and improving your home's comfort. Timber itself is a naturally insulating material, which enhances the energy-saving benefits of these windows.
Yes, we specialise in both the restoration of original timber sash windows and the creation of bespoke replacements that match the existing design and character of your property. Whether you need to repair damaged windows or replicate a traditional style, we can provide tailored solutions to meet your needs.
We offer a standard 10-year manufacturing warranty on our timber 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.
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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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