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A Safer Way to Protect Your Home
Our sliding sash windows blend a traditional style with modern materials. Designed with slim profiles and authentic detailing, these uPVC sash windows replicate the charm of traditional timber while enhancing both modern and period properties across Berkshire and the surrounding regions.
Every sliding sash window comes with robust window locking systems, reinforced frames. This helps protect your homes against forced attacks, while the 10 year manufacturer’s guarantee helps give you improved peace of mind.
Stylish, Timeless Design
With their timeless aesthetics, smooth sliding operation, and choice of authentic woodgrain finishes, our sliding sash windows are perfect for period and modern homes across Thatcham and the surrounding regions.
Each window features high-quality stainless steel balances for smooth, effortless opening and closing. The advanced hardware and weatherproof seals ensure a long lasting performance, while optional tilt-in sashes result in easy cleaning. Homeowners can also choose from over 30 bespoke colours from the Heritage Collection, and hardware options, combining authentic style with modern technology.
Exceptional Energy Efficiency
Our modern uPVC sash windows include two advanced double glazing panes to help reduce heat loss and improve insulation throughout the home. This helps keep you warmer in winter and cooler in summer, creating a more comfortable living environment all year round.
The multi-chambered profile system is designed to achieve excellent thermal performance. The tight compression seals and precision glazing gaskets prevent draughts and water ingress, while the high-performance glass units provide outstanding U-values for long-term energy savings and comfort.
Visit Our Dedicated Showroom and Meet With Our Expert Team To Design The Conservatory Extension of Your Dreams
Related Products
Are you looking for other ways to upgrade your Thatcham or Berkshire home? Alongside our elegant uPVC sliding sash windows, we offer a range of window and door styles to suit every property. Explore our related products to find the perfect match for your project.
uPVC Casement Windows
Our versatile casement windows are strong, secure, and complement modern and traditional homes in Thatcham and Berkshire. This delivers clear views and a clean design that enhances your visual appeal.
uPVC Flush Casement Windows
Oakley’s flush sash windows achieve energy ratings of up to A+12, helping your home stay warm in the winter while potentially lowering your energy bills.
uPVC Tilt & Turn Windows
Our tilt and turn windows are fitted with standard easy-clean hinges, with the option to upgrade to Nico Atlas hardware for added strength and long-term durability
Modern Benefits
Our uPVC sliding sash windows replicate the classic look of timber while delivering the benefits of modern uPVC. They help deliver excellent insulation and outstanding security for any home in Thatcham and the surrounding regions.
Low Maintenance
Our uPVC sash windows are easy to look after, as they can handle tough conditions without peeling or warping. They only need an occasional wipe down, which could help them look immaculate.
Bespoke Styles
Our sliding sash windows are available in a wide selection of colours and hardware options that can suit any home across Thatcham and the surrounding regions. They are also available with accessories such as run through horns and Astragal bars for a personal touch.
Testimonials
Thanks to your great organisation, everything ran so smoothly and I am delighted with the results. Best Wishes
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Emma
Absolutely love my new extension.
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Cindy in Maidenhead
Hi all, Over the last 10 days, it has been an absolute pleasure having the team complete the brickwork for our extension. Not only were they highly professional throughout, but...
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Mr K in Calcot, Reading
Thanks to your great organisation, everything ran so smoothly and I am delighted with the results. Best Wishes
Emma
Absolutely love my new extension.
Cindy in Maidenhead
Hi all, Over the last 10 days, it has been an absolute pleasure having the team complete the brickwork for our extension. Not only were they highly professional throughout, but their skill, craftsmanship, and experience truly speak for themselves. The quality of their work has exceeded our expectations, and it's clear they take great pride in what they do. What really stood out, however, was how considerate and approachable they were. They were always friendly, respectful, and took the time to communicate with both us and our neighbours. They managed our neighbours' expectations exceptionally well throughout the project, ensuring everyone was kept informed and any concerns were handled professionally. I wouldn't hesitate to recommend them to anyone looking for experienced, reliable, and genuine builders. Thank you for making what could have been a stressful project such a positive experience. Please pass this positive feedback to them as well. Kind regards, Kei
Mr K in Calcot, Reading
FAQ's
What are sliding sash windows?
Sliding sash windows are a classic window style made up of two framed sashes that slide vertically within the frame. Traditionally made from timber, modern versions are often crafted in uPVC for improved durability, energy efficiency, and security while retaining their timeless heritage look.
How to clean uPVC sash windows?
Cleaning uPVC sash windows is simple. The sashes tilt inwards, allowing you to easily access both sides of the glass from inside your home. Use a soft cloth with warm, soapy water for the frames and a glass cleaner for the panes—no ladders or specialist tools required.
How do sash windows work?
uPVC sash windows work by using a vertical sliding mechanism. The sashes move smoothly up and down within the frame, held in place by counterbalances or modern spring systems. This design provides flexible ventilation, allowing you to open the top, bottom, or both sections at once.
How much does it cost to restore and upgrade sliding sash windows?
This depends on several factors, including the age, condition, materials, and extent of repairs needed. In some cases, full replacement with modern uPVC sash windows could be a more practical and cost-effective option compared to an extensive restoration project.
Get in Touch With Our Team
To learn more about how our uPVC sliding sash windows can benefit you, get in touch with Oakley Green. We are Ultraframe Approved Installers who are accredited with Trustpilot, so you can trust us to deliver a high quality installation. Call us today on 01635 877 959 to discuss your project, get a free quote for your new sliding sash windows, or visit our showroom to see the windows in person.
Our Process
Make an Enquiry
Consultation & Survey
Planning & Preparation
Installation & Completion
1
Conservatory Design Enquiry & Tailored Quotation
Get in touch with our team and provide details of your project. One of our specialists will review your enquiry, discuss your requirements, and prepare a tailored quotation based on your needs.
Contact Us
2
Home Consultation & Conservatory Survey
Once you’ve reviewed your quotation, we’ll discuss any optional upgrades and answer any questions you may have. If required, we’ll arrange a home visit to assess the project in more detail. When you’re happy to proceed, a qualified surveyor will carry out a full technical survey and produce detailed drawings.
Start a Quote
3
Planning, Building Preparation & Made-to-Measure Conservatory Design
Following the survey, we’ll finalise all technical details and, where necessary, assist with planning permission requirements. Your products will then be manufactured to specification and installation dates scheduled. In most cases, work is ready to commence within 6–10 weeks of approval.
Get in touch
4
Conservatory Installation & Final Project Sign-Off
Our experienced installation team will complete your project to the highest standards, keeping disruption to a minimum throughout the process. Most installations are completed and fully signed off within 4–8 weeks, leaving you with a finished space ready to enjoy for years to come.
Start a Quote
