Essential Range uPVC Sliding Sash Windows
From £370 Incl. VAT
Affordable Made-to-Measure Sliding Sash Windows
Essential Range uPVC Sliding Sash Windows
Our Essential Range uPVC Sliding Sash Windows are designed for customers who want a practical and reliable sash window solution while keeping the overall project cost more affordable. The price starts from £370+VAT for our essential range sliding sash windows.
This range focuses on the core features most homeowners, developers, landlords, and contractors genuinely require without including unnecessary premium upgrades within the base price.
Every Essential range window is made to measure and supplied with double glazing, toughened glass to the bottom sash, integrated cills, and smooth white finishes as standard. The range also allows restricted selected upgrade options where additional styling or functionality is required, including sash horns, astragal bars, mechanical joints, sashes, trickle vents, and additional hardware accessories.
The Essential range is ideal for replacement projects, rental properties, refurbishment work, and larger developments where customers want the appearance of traditional sliding sash windows combined with modern uPVC performance and straightforward pricing.
Features of Essential
Range uPVC Sliding Sash Windows
The Essential range has been carefully designed to provide the key features required within a modern sliding sash window system while maintaining a more budget-friendly specification. Instead of including every premium option within the base price, this range focuses on practicality, clean styling, and everyday performance.
As standard, the Essential range includes integrated cills, double glazing, toughened glass to the lower sash, standard welded joints, and full made-to-measure sizing flexibility. This allows customers to achieve the appearance and functionality of sliding sash windows without unnecessary additional costs.
Optional upgrades are available for customers who want to introduce additional styling or functionality into the final design. Features such as mechanical joints, sash horns, astragal bars, trickle vents, weather bars, pole eyes, D handles, travel restrictors, and lockable restrictors can all be added during configuration.
Some premium design features are reserved for our higher specification ranges. Slim midrails, deep bottom rails, heritage hardware systems, laminated glazing, and advanced 1.2 U-value upgrades are not available within the Essential range and are instead offered within our Standard, Enhanced, and Heritage sash window collections.
Quickly compare what is included, what can be added as an upgrade, and what is only available when moving to the Standard Range or above.
Included as Standard
Supplied with every Essential Range sash window.
Optional Upgrades
Available to add when designing your window.
Included in Higher Ranges
Not included with the Essential Range.
Colour Options
Full Colour Options for Complete Design Control
The Essential range includes a smooth white finish internally and externally as standard. This clean and simple finish works well across modern homes, rental properties, refurbishment projects, and large-scale developments where a practical and neutral appearance is preferred.
To keep the Essential range competitively priced, bespoke woodgrain finishes and bespoke RAL colour options are not included within the standard specification. Customers who require more traditional timber-style finishes or customised colour options can upgrade to one of our higher sash window ranges which is standard range sash windows.
Standard woodgrain finishes including White Grain, Cream Grain, Grey Grain, Agate Grey, Chartwell Green, Black Ash, Irish Oak, Golden Oak, and Rosewood are available as optional upgrades within our essential range.
Custom RAL finishes including Reed Green RAL 6013, Pale Green RAL 6021, Papyrus RAL 9018, Oyster White RAL 1013, Stone RAL 7030, Beige RAL 1001, Pebble RAL 7032, and Basalt Grey RAL 7012 are also available within higher specification ranges.
Included Colour
Optional Colour Upgrades
These woodgrain and dual-colour options are available as upgrades in selected higher ranges.
Higher Range Colour Options
These bespoke and RAL colour options are available in our higher sash window ranges.
Bespoke Woodgrain Options
Custom RAL Colours
Need woodgrain or bespoke colour finishes?
Explore Our Standard Range & Heritage Ranges →
Hardware Options
The Essential range includes practical and reliable standard hardware designed to provide smooth everyday operation while maintaining a clean sash window appearance.
As standard, the range includes a standard sash lock, standard sash knob, and locking keep in a white hardware finish. This specification is designed to keep the range simple and cost effective while still delivering dependable functionality for residential and development projects.
Additional hardware accessories such as pole eyes, D handles, travel restrictors, and lockable restrictors are available as optional upgrades in our standard range for customers who want additional functionality or styling options.
Heritage-style hardware systems including heritage locks, heritage sash knobs, and sash pulls are not available within the Essential range and are instead reserved for our higher sash window collections which are heritage range uPVC sliding sash windows.
Included Hardware
These hardware items are included as standard in our essential range.
Standard Sash Lock
Included as standard
Standard Sash Knob
Included as standard
Locking Keep
Included as standard
White Hardware Finish
Included as standardOptional Hardware Upgrades
Pole Eyes
Optional upgrade
D Handles
Optional upgrade
Travel Restrictors
Optional upgrade
Lockable Restrictors
Optional upgradeHardware Available in Higher Ranges
Sash Pull
Available in higher ranges
Heritage Lock
Available in higher ranges
Heritage Sash Knob
Available in higher rangesFull Heritage Hardware Package
Optional upgradeAdditional Hardware Colour Options
Optional upgradeIncluded Hardware Colour
The standard hardware colour included with this range.
White
Included as standardAvailable Hardware Colours
Additional hardware colour finishes are available in selected higher ranges.
Brushed Chrome
Available in higher ranges
Satin Silver
Available in higher ranges
Golden
Available in higher ranges
Chrome
Available in higher ranges
Bronze
Available in higher ranges
Black
Available in higher ranges
Antique Black
Available in higher rangesEssential Range Glass Options
The Essential range includes modern double glazing 24mm argon-filled glass as standard to provide dependable everyday thermal performance with 1.4 Wm²/K U-Value and improved insulation compared to older single glazed sash windows.
All Essential range double glazed sash windows include toughened safety glass to the lower sash as standard. Obscure glazing options are also available for bathrooms, entrance halls, side elevations, and other privacy-sensitive areas but only Satin and Stippolyte glass patterns are available in this range; there is no option to upgrade to other obscure glass options.
To maintain a more straightforward specification, premium glazing upgrades such as laminated glass and advanced 1.2 U-value thermal upgrades are not available within the Essential range and are instead reserved for our higher specification sash window collections.
This section explains the glazing options included as standard, the obscure glass choices available, and the additional glazing upgrades offered within selected higher sash window ranges.
Included in Essential Range
Available Obscure Glass Options
These two obscure glass options are available within the Essential range.
Optional Glazing Upgrades
Additional glazing upgrades may be available by upgrading to selected higher sash window ranges.
Available in Higher Ranges
These additional glazing specifications, upgrades, and obscure glass patterns are available in standard & heritage range.
Looking for heritage hardware and additional hardware colours?
Explore Our Standard, Enhanced & Heritage Ranges →
Design and order your uPVC sliding sash window online
Compare Our uPVC Sliding Sash Window Ranges
| Feature |  Essential (Entry Tier) | Standard (Core Tier) MOST POPULAR | Enhanced (Upsell Tier) | Heritage (Premium Tier) |
|---|---|---|---|---|
| External Colours | ✓ (White only) | ○ (Woodgrain +£60, Dual +£80, RAL +£200) | ○ (Woodgrain +£60, Dual +£80, RAL +£200) | ✓ (Woodgrain included, RAL optional +£200) |
| Internal Colours | ✓ (White only) | ○ (same pricing) | ○ (same pricing) | ✓ (matching woodgrain) |
| Georgian Bars | ○ | ○ | ✓ | ✓ |
| Sash Horns | ○ | ✓ | ○ | ✓ |
| Trickle Vents | ○ | ✓ | ✓ | ✓ |
| Cills | ✓ | ✓ | ✓ | ✓ |
| Double Glazing | ✓ | ✓ | ✓ | ✓ |
| Toughened Glass bottom sash | ✓ | ✓ | ✓ | ✓ |
| Hardware Colours | ✓ (White only) | ○ (full range) | ✓ (full range included) | ✓ (full range) |
| Pole Eyes | ○ | ○ | ○ | ✓ |
| D-Handles | ○ | ○ | ○ | ✓ |
| Weather Bar | ○ | ○ | ○ | ✓ |
| Mechanical Joints | ○ | ✓ | ✓ | ✓ (fully mechanical frame & sashes) |
| All Sizes | ✓ (no restriction) | ✓ | ✓ | ✓ |
| Slim Midrail | ✕ | ○ | ○ | ○ |
| Deep Bottom Rail | ✕ | ○ | ○ | ✓ |
| Laminated Glass | ✕ | ○ | ○ | ✓ |
| 1.2 U-Value Upgrade | ✕ | ○ | ○ | ✓ |
| Obscure Glass Options | ✓ | ✓ | ✓ | ✓ |
| Heritage Hardware | ✕ | ○ | ○ | ✓ |
| Travel Restrictors | ○ | ○ | ○ | ✓ |
Explore More About Our
Essential Range uPVC Sliding Sash Windows
Exceptional Thermal Efficiency
When you invest in new windows, performance is just as important as appearance. Our uPVC sliding sash windows are designed to improve thermal efficiency across your entire home, helping to reduce energy loss and improve comfort throughout the year.
Insulated Frame Design
The multi chamber frame traps air to reduce heat loss and improve insulation.
High Performance Glazing
24mm double glazing with argon gas slows heat transfer and keeps warmth inside.
Enhanced Edge Insulation
Warm edge spacer bars reduce heat loss around glass edges.
Thermal Performance
A-rated as standard with 1.4 U-value. Upgrade available to 1.2 U-value.
See Our Sliding Sash Window Projects
Explore our real essential range sliding sash window installations and see how different finishes, configurations and design details look in completed projects. This gallery is designed to help you visualise the final result and choose the right option for your property with more confidence.
Frequently Asked Questions
Find clear answers to the most common questions about our uPVC sliding sash windows, including how they work, how to order online, delivery, lead times, glazing options and the differences between our available ranges.
uPVC sliding sash windows are vertically opening windows made up of two separate panels, known as sashes, which sit one above the other within the frame. The bottom sash slides upwards and the top sash slides downwards, allowing you to control airflow by opening either section or both together.
Unlike traditional timber sash windows, modern versions are manufactured using durable uPVC profiles. This means you retain the classic sash window design commonly seen in period properties across the UK, while benefiting from improved insulation, enhanced security and minimal maintenance.
Most modern uPVC sash windows also include a tilt function, allowing both sashes to tilt inwards for easy and safe cleaning from inside the property.
At Sliding Sash Windows UK, we offer four ranges so you can choose based on your budget and how much customisation you need.
The Essential range keeps things simple with core features and a white finish.
The Standard range gives you more flexibility with colours, hardware and upgrades.
The Enhanced range includes more features as standard, so you do not have to add them individually.
The Heritage range is fully specified with traditional detailing like mechanical joints and woodgrain finishes, making it ideal for period and conservation-style properties.
Yes, you can design and order your windows directly through our online system. You can select your size, colour, glazing, hardware and upgrades, and see the pricing update live as you build your window.
If you prefer, you can also contact us through our form or email, and our team will help you with your order.
Yes, we deliver nationwide across the UK. There are some areas where delivery may be limited, but we will always confirm this during the order process.
Delivery charges start from £36 and may vary depending on your location.
Our standard lead time for uPVC sliding sash windows is usually between 2 to 3 weeks. This can vary depending on the size of your order, the range you choose and any bespoke options such as special colours or upgraded glazing.
We always recommend measuring the width and height of your window opening from brick to brick or frame to frame. It is important to take multiple measurements and use the smallest size to ensure a proper fit.
If you are unsure, you can contact our team and we will guide you through the process before you place your order.
Yes, replacing timber sash windows with uPVC sliding sash windows is very common. Our windows are designed to replicate the original appearance while improving insulation, security and durability.
For conservation areas or period properties, our Heritage range is specifically designed to maintain the traditional look while meeting modern performance standards.
In many cases, yes. Our Heritage range includes traditional features such as mechanical joints, run-through sash horns and woodgrain finishes, which are often required for conservation-style projects.
However, approval depends on your local authority, so we always recommend checking before placing an order.
We offer a full range of glazing options including standard double glazing, laminated glass for safety, acoustic glass for noise reduction and obscure glass for privacy.
All windows come with high-performance glazing as standard, and upgrades are available depending on your requirements.
Our windows are built with secure locking systems and reinforced profiles. We also offer a PAS 24 security upgrade, which includes enhanced locking and additional security features.
With proper care, uPVC sash windows can last for decades. They are designed to resist weathering, do not rot like timber and require very little maintenance to keep them performing well.
Maintenance is minimal. You do not need to paint or treat the frames like timber windows. Regular cleaning and occasional checks on moving parts are usually enough to keep them in good condition.
Yes, all of our windows can be customised depending on the range you choose. You can select from smooth white, woodgrain finishes, dual colours and bespoke RAL options, along with a full range of hardware and glazing upgrades.
If you are unsure about anything, our team is here to help. You can contact us through the website form or email, and we will guide you through measuring, selecting options and placing your order.
Order Your Windows Online Today
You are in full control of your order from start to finish. Configure your windows exactly as needed, choose your size, colour, hardware and glazing, and place your order directly.