Sliding sash windows add a touch of traditional elegance to any home. Their distinctive design is a key feature of many period properties. However, traditional timber sash windows can be expensive to buy and maintain.
That’s where uPVC sliding sash windows come in – offering the classic look with modern benefits and at a more affordable price.
At DM Windows, we install high-quality Spectus uPVC sliding sash windows throughout Bristol, Bath and the surrounding areas. This guide will help you understand the costs involved and why they might be the right choice for your home.
What is a Sliding Sash Window?
A sliding sash window, sometimes called a vertical slider, is a traditional window style with two sections that slide vertically past each other. The top sash slides down while the bottom section of the window (bottom sash) slides up, allowing for flexible ventilation options. Unlike casement windows that open outward, these windows operate within their frame.
Modern uPVC sash windows maintain this classic operation while incorporating contemporary features. The mechanical joints of high-quality sash windows like our Spectus range are designed to provide smooth, reliable movement for years to come. Many designs include decorative elements like a sash horn edges to replicate the authentic look of traditional timber windows.
Inside the window, between the glass panes, spacer bars help maintain the insulating gap and improve energy efficiency. The hardware section includes locks, handles, and lifts that allow for secure and easy operation. These sash window features combine to create a window that looks traditional but performs to modern standards.
Understanding the Cost of uPVC Sliding Sash Windows
When considering new windows for your home, the price is naturally a key factor. Here’s what influences the cost of uPVC sliding sash windows.
How uPVC Compares to Timber
The most significant cost saving with uPVC sliding sash windows comes when you compare them to traditional timber alternatives:
- uPVC sash windows typically cost 30-50% less than equivalent timber versions
- Installation costs are often lower as uPVC is lighter and easier to work with
- Long-term maintenance costs are dramatically reduced. There is no need for painting, staining, or sealing.
While wooden sash windows have their charm, they require sanding, painting, and occasional repairs to prevent rot and warping. These maintenance costs add up over time. Our Spectus uPVC sash windows need little more than an occasional wipe down.
Colour and Finish
While white uPVC is the most economical choice, many homeowners prefer colours that match their property’s character:
- Coloured finishes like Chartwell Green may add to the overall cost
- Woodgrain finishes that mimic traditional timber are available for a more authentic appearance
- Popular choices include Irish Oak and Golden Oak for a more natural look
The good news is that our Spectus range comes in over 60 colours, so you’re sure to find something that suits your home and budget.
Hardware and Accessories
The finishing touches affect the look, functionality, and cost of your sliding sash windows. These windows come with optional heritage hardware designed to look like traditional fittings and decorative options like astragal bars to divide glass panes.
At DM Windows, we use top-quality hardware from industry leaders to ensure your new windows remain safe and secure.
The Value of uPVC Sliding Sash Windows
While the upfront cost is important, it’s worth considering the long-term value that uPVC sliding sash windows offer:
Energy Efficiency Benefits
Modern uPVC sash windows significantly outperform older windows in terms of thermal efficiency.
- Multi-chambered frames reduce heat transfer
- High-quality double glazing minimises heat loss
- Effective seals prevent draughts
Our Spectus uPVC sliding sash windows can achieve excellent energy ratings, helping to reduce your energy bills. With rising energy costs, the savings from these efficient windows can be substantial over their lifetime.
Low Maintenance Savings
One of the most significant advantages of uPVC over timber is the reduced maintenance:
- No painting or staining required
- No risk of rot, warping, or insect damage
- Simple cleaning keeps them looking new
When you factor in the cost of regularly maintaining timber windows, the lifetime cost of uPVC becomes even more attractive.
Modern Performance with Timeless Design
Our Spectus uPVC sash windows combine traditional styling with modern features. It offers:
- Smooth operation for ease of use
- Tilt functions for easy cleaning from inside your home
- A security upgrade with modern locking systems
- Excellent noise reduction compared to single-glazed windows
These performance benefits add value to your home beyond just the visual appeal.
A Breakdown of UPVC vs Timber
| uPVC Sliding Sash Windows | Traditional Timber Sash Windows | |
| Upfront Cost | Typically 30–50% cheaper | More expensive due to materials & craftsmanship |
| Maintenance | Low maintenance – no painting required | Requires regular painting, staining & repairs |
| Durability | Won’t rot, warp, or swell | Susceptible to rot, warping, and insect damage |
| Energy Efficiency | Multi-chambered design, excellent insulation | Usually less efficient, especially older versions |
| Installation | Easier and quicker due to lighter weight | Heavier and more complex to install |
| Colour Options | Over 60 colours and finishes available | Requires custom painting or staining |
Our Spectus uPVC Sliding Sash Windows
At DM Windows, we’ve chosen to install Spectus sliding sash uPVC windows because they offer the perfect balance of quality, authenticity, and value.
Spectus produces some of the most authentic sash windows in the uPVC market. Their attention to detail makes them appropriate even for conservation areas where planning requirements can be strict.
Key features of our Spectus uPVC sliding sash windows include:
- Traditional styling with the option of decorative sash horns and deep bottom rails
- A choice of astragal bars to replicate period styles
- Tilt facility for easy cleaning from inside
- Multi-chambered profiles for excellent thermal efficiency
- High-security locks as standard and travel restrictors for safety
- A range of hardware options, including heritage-style fittings
- Available in over 60 colours, including authentic woodgrain finishes
These windows allow plenty of natural light into your home while maintaining the character of traditional sash windows. The design is crucial for creating an authentic appearance that rivals traditional timber windows.
Next Steps for Your New Sash Window Project
If you’re considering replacing your existing windows with uPVC sliding sash windows, here are some signs it might be time:
- Your current windows are draughty or letting in water
- You’re finding it hard to open and close your sash windows
- Your energy bills are higher than they should be
- You’re tired of maintaining wooden sash windows
Our Spectus uPVC sliding sash windows address all these issues while maintaining the timeless style that makes sash windows so popular. Replacing your windows is a significant decision, and getting the right advice is important. At DM Windows, we offer:
- Free, no-obligation consultations
- Detailed quotations with no hidden costs
- Professional installation following all the building regulations by our Certass-accredited team
- Comprehensive guarantees for your peace of mind
We’re happy to discuss your requirements and provide a quotation tailored to your home. With our expertise in installing Spectus uPVC sliding sash windows throughout Bristol and Bath, we can help you achieve the perfect balance of traditional style, modern performance, and affordable pricing.
For more information, please call us on 0117 313 6884, email us at sales@dmwindowsbristol.com, or use our online contact form.
Frequently Asked Questions
Are uPVC sliding sash windows suitable replacements for traditional box sash windows?
Yes, our Spectus uPVC sliding sash windows are excellent replacements for traditional box sash windows. They offer the same classic appearance with features like decorative horns and a slim midrail, but with modern benefits including improved energy efficiency, added security, and minimal maintenance requirements.
What’s the minimum width available for Spectus uPVC sliding sash windows?
While specific requirements can vary based on your property, Spectus sliding sash windows can be manufactured to fit most openings. We’ll measure your windows precisely to ensure the perfect fit, whether you need standard sizes or custom dimensions. During your free consultation, we can discuss the specific measurements required for your project.
How long do Spectus uPVC sliding sash windows last?
Spectus uPVC sliding sash windows are built to last. With proper care, they typically have a lifespan of 20-30 years. The multi-chambered frames, quality hardware, and durable construction ensure long-term performance.
