If you’re considering uPVC sliding sash windows for your home, you may have some questions about this popular choice. In this article, we will answer the most common questions about uPVC sliding sash windows and provide you with the information you need to make an informed decision. Whether you’re a homeowner looking to upgrade your windows or a business in need of reliable and energy-efficient windows, uPVC sliding sash options offer a range of benefits that make them a popular choice.

A bay window with uPVC sash frames set into a stone-walled house surrounded by shrubs.

1. What are sliding sash windows?

uPVC sliding sash windows, also known as vertical sliders or vertical sliding windows, are a type of window that combines the traditional look of sash windows with the modern benefits of uPVC material. They feature two movable sashes (top sash and bottom sash) that slide vertically within the frame, allowing for easy ventilation control. The uPVC material used in these windows offers durability, energy efficiency, and low maintenance, making them an excellent choice for homeowners and businesses alike.

2. Are uPVC sash windows any good?

White uPVC sliding sash window above a kitchen sink, overlooking a green garden.

uPVC sash windows come with various features that enhance their functionality and aesthetics. Some of the common features include:

  • Tilt Facility: This allows for easy cleaning of the window frame from the inside.
  • Sash horns: Decorative sash horns can be added to enhance the authenticity, giving them a more traditional style appearance.
  • Slim midrail: This horizontal bar divides the window into two sections and a slimmer version adds to the authentic appearance of the windows.
  • Deep bottom rail: The bottom rail of the window is designed to be deeper, giving the window a more traditional look.
  • Mechanical joints: Designed to mimic the traditional construction methods of timber sash windows by using mechanical rather than welded joints.
  • Astragal bars: These decorative bars give the windows a traditional look and can be customised to match the style of your home, such as Georgian or Victorian sash windows.

3. What are the benefits of uPVC sliding sash windows?

uPVC sliding sash windows offer several benefits that make them a popular choice among homeowners and businesses. Some of the key benefits include:

  • Energy Efficient: Can save on heating and cooling costs with double glazing.
  • Secure: High security features are available for maximum security.
  • Low Maintenance: Easy to clean, no painting needed.
  • Durable: Weather-tested to UK standards and built to stand the test of time.
  • Customisable: Various styles available, including woodgrain finish options.
  • Affordable: Cost-effective and low maintenance compared to original timber sash windows.

4. Are sliding sash windows energy efficient?

 uPVC sliding sash window framed by red curtains in a cosy reading nook, overlooking a garden.

uPVC material is known for its excellent insulation properties, helping to keep your home warm in winter and cool in summer. This can lead to energy savings and reduced heating and cooling costs. The double glazing also contributes to improved energy efficiency.

5. Are sliding sash windows secure?

Sliding sash windows are designed with security in mind. They have been tested for compliance with enhanced security standards, to help keep your home or business safe and provide peace of mind.

6. Are uPVC windows low maintenance?

Unlike traditional wooden sash windows, uPVC sash windows require minimal maintenance. They do not need to be painted or stained and can be easily cleaned with a damp cloth.

7. Are new sash windows draughty?

Our sash windows have been rigorously weather-tested and passed with flying colours. Tested for air tightness, water tightness, and wind load, they are designed to keep your home comfortable and protected from the elements.

8. Can they be customised?

uPVC sliding sash window in a dining room with yellow patterned wallpaper, overlooking green trees outside.

Sash windows can be customised to fit your specific requirements. You can choose from a wide range of colours and finishes to match the classic design style of your home or business, whether it’s a traditional property or a modern building. They can even be designed to complement Georgian, Victorian, or Edwardian sash windows.

9. Are sash windows more expensive or are they affordable?

Yes, uPVC sash windows are more affordable than traditional timber or aluminium windows. They offer a cost-effective solution without compromising on quality or aesthetics. Additionally, uPVC windows require lower maintenance, which can save you money in the long run.

uPVC sliding sash window prices

If you’re looking for uPVC sliding sash windows, Emerald Windows and Doors is a reputable company that offers a premium range of uPVC windows, including sliding sash windows, at an affordable price. We have been serving the South West England area since 2004 and are fully accredited. We provide free quotations and have a showroom where you can view our products. With our expertise and excellent customer reviews, you can trust Emerald Windows and Doors to provide you with the perfect uPVC sash windows for your home or business, offering a touch of traditional charm with modern performance.

Stay connected with us on social media for updates, customer reviews, and design inspiration! Check out our Instagram profile @emeraldwindowsanddoorssn and follow us on Facebook at Emerald Windows and Doors to see more of our projects and products in action.



Areas we serve

Swindon-based family run double glazing installers

With a head office in Swindon, a short trip from the motorway, we are ideally located to offer our services across Wiltshire, Reading, Bath, Bristol, Marlborough, Berkshire, Gloucestershire, Oxfordshire, and other surrounding locations.

Emerald provide and install home improvements in all materials – uPVC, aluminium and traditional timber. No matter what material you choose, you can be sure we’ll provide you consistent quality – our work is always finished to the highest standards, whether you’re installing 2 windows or 20!

Book a home visitView our showroom

What our customers are saying

We pride ourselves on the hundreds of customer reviews that we have collected over our many years of trading. Why not read some of our testimonials yourself, and see how our customers have rated their experience with our service.

See All Reviews

Replacing patio door with a window

Emerald windows were brilliant. The patio door was removed and replaced with a window. All work was carried out from bricking up the outside to plastering the inside. Great work...

Read full review

Lesley B

yell logo

Local Family Friendly Company

We worried about choosing a window company. We looked at all the usual national firms but we preferred the feel of a smaller local family run business as the rep...

Read full review

Stephanie C

yell logo

Very Pleased

Very pleased with the whole process from Mark letting us see and touch the product in the showroom in Swindon (many don't!), to a transparent price breakdown, no "buy now...

Read full review

Casey Collins

google logo

Highly Recommended

Highly recommend Emerald Windows and Doors; new Front and back doors fitted yesterday. Cannot praise Mark the Fitter enough, courteous, friendly and very helpful. Top job with attention to detail...

Read full review

Michelle Webb

facebook logo

Emerald Windows – A Quality Product

Emerald windows have just installed a new composite front door to our property. We are very pleased with the product and the installers were polite, professional and have carried out...

Read full review

Richard K

yell logo

Or click a platform below to leave a review:

FENSA logo consumer protection association (CPA) logo glass and glazing federation (GGF) logo GGP_INSTALLER_AWARDS_23_SHORTLISTED_LOGO bbsa logo