Our slimline uPVC windows enhance your home with highly energy efficient windows as well as thin proportions. Slimmer and sleeker, than other PVCu windows on the market, choose our slimline windows for bigger glass panels, more light and better window energy ratings, helping to lower your heating bills. Our latest-generation window combines with our entire range of PVCu doors for a complete home improvement solution and single point guarantee.

Liniar slimline uPVC windows with a thinner sash.

The secret to our ultra-slim uPVC windows is the re-engineered sash. We have access to one of the thinnest upvc windows on the market with a six-chamber core for the best thermal performance. As a result, you benefit from an altogether thinner window compared to other standard 70mm windows.

This outstanding window comes with a 70mm deep frame. For you, this means you can have slimline uPVC windows to replace your old ones or as part of your new extension.

The slimmer sash profiles also mean less window material. Less PVCu means more glass than other windows, improving light into the home. You also get the same excellent security and weather resistance of a current-generation quality new window.

Also available with our slimline upvc windows is a choice of appearance. Choose from either a chamfered external profile giving the desirable putty line feature. Inside your new slimline windows, you get to choose from Chamfered or Sculptured internal beading.

The Chamfered frame offers a flat look for a cleaner window aesthetic with the least amount of PVCu frame and the most glass. Choose the chamfered window for older houses as well as new extensions. Sculptured frames are more traditional in appearance for timber-style windows, conservatory frames or bigger window sizes. Best of all, any of these window styles come with the same performance, security, quality and style.

Benefits of Slimline UPVC Windows Compared to Other Window Types

When considering window options for your home, slimline UPVC windows stand out for several compelling reasons. Here’s how they compare to other window types:

More Natural Light

Slimline UPVC windows are designed with narrower frames, allowing for a larger glass surface area. This innovative design maximises natural light entry, brightening your home more effectively than traditional, bulkier windows.

Superior Energy Efficiency

One of the standout features of UPVC windows is their exceptional energy efficiency. Unlike wood or aluminium windows, the combination of advanced UPVC materials with double-glazing technology offers superior insulation. This minimises unwanted heat transfer, ensuring your home remains cozy during winter and pleasantly cool in summer. The resulting reduction in energy consumption can lead to significant savings on utility bills.

Versatility and Aesthetic Appeal

Available in a vast array of styles, finishes, and colours, UPVC windows suit both contemporary and classic architectural designs. Unlike other materials, UPVC provides a wide variety of options, allowing personalisation right down to the handle design. Choose between double or triple glazing to further customise their appearance and performance.

Effective Noise Reduction

UPVC windows offer a peaceful home environment by significantly reducing noise pollution. Thanks to their high-quality frames combined with double-glazing, these windows outperform alternatives in minimising external noise intrusion, providing a quieter indoor space.

Low Maintenance and Durability

When it comes to upkeep, slimline UPVC windows excel. Unlike wood, which can warp or rot, or metal, which may corrode, UPVC is highly resistant to these issues. Its durable construction requires minimal maintenance—just a simple clean with soapy water and a soft cloth keeps them looking new, eliminating the need for regular painting or sealing.

In summary, the benefits of slimline UPVC windows go beyond aesthetics—they offer enhanced functionality, energy efficiency, and ease of maintenance compared to other window types. These features make them an excellent choice for any homeowner looking to improve their home’s comfort and style.

Great reasons to see our slimline uPVC windows today.

Get in touch to compare our slimline windows with other brands of PVCu on the market. As well as an outstanding look in your home, they come with other great features and benefits as standard.

High security windows thanks to internal glazing beads, meaning you can’t remove the glass from outside.
High specification SGG Planitherm TOTAL+ glass for clarity and an ‘A’ Energy Rating.
Easy-clean hinges making upstairs or downstairs windows a breeze to clean from inside.
Premium-grade PVCu material with impact resistance, colour-fastness and low maintenance.
A durable, fully welded frame ensures longevity and excellent profile strength.
Functional quality window handles with key locking and a lockable ventilation setting for improved airflow in your home.

Coloured PVCu windows offer you the latest in traditional or modern colours. As well as classic white windows, we offer all these colours or a combination of window colours inside and outside.

White
White Grain
Golden Oak
Mahogany
Rosewood
Irish Oak
Black
Chartwell Green
Cream
Irish Oak on White
Chartwell Green on White
Black on White
White Inside

Enhanced window security for added peace of mind.

If you wish, we can upgrade our slimline uPVC windows to the latest security standards. Our windows come tested to the demanding PAS24:2012 tests. Also available is a six-point locking system with twin-directional bolts for improved security against forced attack on the window.

You can even choose shootbolt locks with anti-intrusion hinge bolts providing enhanced protection to the sides of the window casement. These ingenious security enhancements prevent an opening part of the window from outward force on the hinge side. As a result, your home is better protected compare to older style locking systems.

Get in touch today for your free quote.

Our Liniar Slim Sash high-performance windows, look great and are one of the best performing products on the market. At Newlite Home Improvements, we offer a personal service, the highest quality products and a professional installation. Serving Sussex, Kent and Surrey, we help transform your home into a more energy efficient, functional and better space. Get in touch today for your free quote or to arrange a viewing at our manufacturer showrooms.

Client feedback left on Google and Facebook

Newlite Home Improvements

5.0

Based on 179 reviews

review us on

alexia masardo

13:24 13 Nov 24

Alan and his team are not only extremely knowledgable, but go the extra mile with customer care and support. I would highly recommend Newlite! Thank you so much

Zoe Fuller

16:24 03 Nov 24

Absolutely brilliant company and service. Pleased to say our entire house has been improved using Newlite, and would highly recommend.

Phil Wilson

07:02 25 Oct 24

First class product. New door fitted with minimum of fuss and tided up afterwards .Extremely solid with excellent locking mechanism. Stylish design- very pleased with result.

Jeff Triggs

15:20 23 Oct 24

We’re very happy with our new Newlite doors and windows. The product is high quality and the installers reliable, skilled and pleasant. The promised installation deadline was met and the house left clean and tidy.

Lesley Jackson

19:03 07 Oct 24

Newlite Home Improvements have installed 7 windows for us. Very professional work and to a very high standard. Alan and his team have been courteous and friendly from start to finish and the installers even did an excellent job of clearing up.I would highly recommend Newlite Home Improvements to anyone that is thinking of replacement or new windows and in the future I definitely wouldn’t go to anyone else 😀👍

Greg Claire

10:35 03 Oct 24

Newlite made and fitted black aluminium framed windows and doors for a two storey extension built during the last 6 months.The quality and look of the windows is just what we hoped for and the team have been quick to respond to minor issues that I'm sure are typical soon after installation.

Carole Morton

17:24 30 Sep 24

Great service from start to finish, Alan answered my initial query very quickly and came round with brochures, he discussed what we would like and explained the different door types, he was great at advising what door would suit my property. Alan kept in touch and let me know when the door was ready to be fitted. Our fitter did a great job, was very friendly and polite, once he had finished he explained what he had done and ensured we were happy with the finished product and checked that the lock worked properly. I would definitely recommend this company .

Christine Avery

08:05 23 Sep 24

Excellent service from start to finish, 100% recommended, the windows look brilliant, they work well and condensation has been eliminated. The team worked fast, protected everything, were polite and cleared up after themselves. Alan who managed everything was great, helpful and communicated well. No issues whatsoever.

Michael Barnard

19:59 17 Sep 24

When we decided to replace our timber windows, we considered several options but only became convinced that we should proceed when we met and discussed our requirements with Alan from Newlite Home Improvements. For the first time we felt confident that the quality of the product, the fitting and the after sales care would meet our expectations. Considering the size of the project which included every window and door in our property, we remained completely relaxed in the belief that our confidence was well placed - and it was! We would most certainly recommend Newlite, their fitters and their products without reservation.

Sean Sargent

18:30 17 Sep 24

we have used Newlite Home Improvements twice now. Great service end to end.

Jesus Insua-Naya

08:41 30 Aug 24

Thoroughly recommended on all levels . Alan Burden and his team are a very professional outfit and I am glad to have come across them.I needed to find a local company who I could trust to complete the last stage of a staggered window replacement, having been very dissapointed by the previous installer.It quickly became apparent to me that we were in very good hands indeed with Newlite. The whole process was very well managed by Alan and his team . Here is a company with a no nonsense approach combined with good values and an obvious care to the project in hand. Thank you for a job well done.

Justin Catling

16:30 28 Aug 24

Fantastic from start to finish, very happy with the service and fitting. Windows look amazing and have changed

19:13 15 Aug 24

Newlite's second job for us - first smart metal double doors and side windows, now replacing old double glazing units with new good quality products. This is a thoroughly professional set up, beginning with advice on what works best for us in the price range, then a surveyors check over to see off any problems in advance, then a fitter arriving on time, polite, and clearly with years of experience. Its important for me to trust people, and I do not hesitate to recommend this firm.

Zoe White

18:50 04 Aug 24

Would highly recommend! We are extremely pleased with our new patio door and will be using their services again. A brilliant team, trustworthy and very hard-working with excellent attention to detail.

s cogley

15:51 30 Jul 24

Quick response to enquiry of replacement windows and assessment with advice on all or selected from Alan. I wasn't pressurised into replacing all the windows at all. Newlite was recommended to me by a neighbour and after a bad experience on checkatrade previously and 1 neighbour having constant problems with leaking in a conservatory from another company - i thought better to follow a recommendation from a neighbour who has used Newlite for over 15 years and been consistently happy ..with no leaks from a conservatory and had many windows - recently ordering a large replacement kitchen window .. and said Alan really cares about customers being happy and always follows up with calls to make sure all is ok. Mine were fitted exactly when promised..and I'm really happy and pleased that a local company has done such a great job..lots of contact..immediate answer to questions ..flexible with fitting arrangements around my schedule..friendly polite fitters who were tidy and careful of surroundings and my new carpets and who worked really hard. Fantastic job ..ahead of time..i have no doubt if i had any queries or problems they would be addressed..i just wish they could sort my other renovations out too! . I'm so pleased and satisfied that I've asked them to quote for a glazing job in berkshire for relatives. It is hard to find honest traders these days and with such a lot of money at stake you need to know you will get what you are paying for and expecting. I wouldnt hesitate to recommend Alan, and the fitters Dave and Tony..a great team with an honest business who actually care about customer satisfaction in a decent and traditional way. Im so glad my neighbour gave me the recommendation.

Harriet Every

06:32 29 Jul 24

We are so pleased with our new crittal windows and doors. Absolute top quality and the service we have received has been second to none from start to finish. Both Alan and his surveyor Adrien have been responsive to any questions along the way which has taken out a lot of the stress of our building project which might have otherwise been there. We are so pleased that we decided to go with this company. 100% recommend.

Poppy Read

21:42 09 Jul 24

We got all our mid-century crittall windows replaced with aluminium ones by Newlite and Alan was amazing from beginning to end. He communicated with us consistently and was on hand for all our silly questions/alterations. The installers were extremely friendly and efficient and we were made to feel very at ease with the process. The finished windows are wonderful - the quality is clear! We love them, couldn’t recommend enough.

Shaun Kirkby-Bott

12:19 04 Jun 24

I am very impressed with Newlite Home Improvements and the professional service I received. Alan, the owner, was incredibly helpful throughout the entire process. I had a specific style of front door in mind, and Alan went above and beyond to source it for me. The service I received from start to finish was impeccable, and I cannot fault any aspect of the experience. I certainly would not hesitate to use Newlite again for other home improvement projects. I highly recommend this company to anyone seeking high-quality home improvement services.

Emily Rodgers

07:57 27 Apr 24

Newlite is fantastic! We wanted some crittall style doors and a window for our extension and from the moment we got in touch with Newlite the whole process was easy. Alan talks us through the different product options and decisions every step of the way and always made it clear where we were at in the process, answering any questions we had. We were surprised how quickly the delivery was from measuring up and the installation was smooth and done to perfection. We absolutely love our new doors/window and would recommend Newlite to anyone!