Slim uPVC Windows

Offering a much thinner window frame than standard window styles, our exclusive range of slim windows can be tailored to suit both modern and traditional properties in Surrey, Berkshire and beyond. Invest and upgrade today to choose an A+ rated energy-efficient and a fully customisable window that will create a bright and spacious feel to your home.

Slim windows vs casement windows

Our thin framed windows are exactly like they sound. They boast a much slimmer uPVC outer frame when compared to a standard casement window for a sleek and stylish appearance that will enhance your home. This design allows for 12% more glass which will let more natural light brighten your home.

The thinnest frames available in the UK, they can compete with the slender frame appearance that aluminium windows offer, but for the cost-effective uPVC prices. Their customisable appearance means they can be perfectly designed to blend with any type of home, but are especially popular with homeowners looking to add a modern appearance to their home.

See how our slim uPVC windows compare in appearance to our casement uPVC windows.

slimline vs casement

What is a slim frame window?


Streamlined finish

The key feature of our slim windows is their exceptionally thin frames. You can choose between Bevelled or Ovolo beading to achieve your desired appearance.

Bevelled frames have a flat and smooth finish, whereas Ovolo features an additional curved vertical bar in the frame which is more appropriate for period properties.


Large glass panes

With the frames taking up less space in the overall model, this gives more space for our high-performance glazing.

Our innovative glass is A+ rated for its energy efficiency and is as technically impressive as most tripe glazed windows! This will keep your home warm and secure. With our range of decorative glass options, including textured and leaded glass, you can create a distinctive appearance to fully complement your home.


Advanced uPVC frames

Manufactured with our exceptional uPVC, our ultra-thin windows are virtually maintenance-free! All they require is the occasional wipe-down with a wet cloth, perfect for the modern lifestyle.

Its modern manufacturing techniques means that it won’t fade, warp or rot over time. They’ll perform and look as good as they do on the day they’re installed for a competitive lifespan that will upgrade your home.

slimline upvc window

Exclusive to Sheerwater Glass!

These cutting-edge slim frame windows are only available from the team at Sheerwater Glass. You won’t find a better performing thin-framed window anywhere else in the UK with the same technical specifications! With a range of customisable options that have been carefully designed to individual requirements, they’re the ideal way to create a flawless and contemporary look.

Slim uPVC window colours

Like all of our uPVC double glazing products, our slim windows can be designed in a range of attractive colours, including white, Chartwell green and grey. In fact, with their customisability, you can choose from any RAL colour to find the perfect shade to suit your home. They can also be designed in a woodgrain finish for an authentic timber style to complement older properties.

Get some inspiration in our window gallery to see how our thin framed windows can revamp the appearance of your home.

slimline leaded glass casement window

High-performing slim uPVC windows in Surrey, Berkshire and beyond


Keep your home secure

With our thin modern windows, you can be sure that your home will be protected from unwanted intruders as we rigorously test our windows to ensure that they meet strict industry standards for greater peace of mind.

We fit a range of locking features into our slim window systems to heighten the safety of a property. This includes a multi-point locking mechanism which bolts the window to the frame at several points, maximising its strength from great forces. Security glazing is also included as standard, meaning the glass is tightly fitted within the frame so it can’t be removed from the exterior.


Thermally performing windows

By upgrading your windows to our advanced slender frames, you’ll significantly improve the thermal ability of your home. You’ll also notice that outside noises are reduced with our modern slim windows.

The leading-edge uPVC incorporates a multi-layered design and effective spacer bars that stop the heat from escaping from the room, whilst avoiding letting the draughts in. This could even save you money on your heating bills! Our high-performance glazing is A+ rated, incorporating high-quality glass panes that surround argon gas to retain the warmth inside.

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One of our team would be happy to have a chat with you about your requirements, answer any unanswered questions and measure up at a time that suits you to provide you a free, no obligation quote.

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Our customers say

“It is no wonder that Sheerwater Glass are one of the oldest and most trusted companies in the Woking area.”John Coleman
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Areas we cover

Sheerwater Glass provides window installation and repairs throughout Surrey and the surrounding areas of our Woking showroom. If you’re interested in our services, we encourage you to check if we serve customers in your area by simply typing in your postcode.

If you check and find that we don’t serve customers in your area, in some cases, we may be able to help. Please call us to find out more.

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