Alitherm 400 Windows – Elevating Your Home’s Style and Security

Alitherm 400 windows expertly installed by Newlite Home Improvements Ltd are the perfect blend of design, functionality, and high-performance technology. These windows are meticulously from our carefully chosen manufacturers and partners to provide outstanding energy efficiency, superior security, and elegant aesthetics, making them an ideal choice for both residential and light commercial properties.

Whether you’re looking to enhance the style of your home or improve its thermal performance, Alitherm 400 windows offer a versatile and durable solution that meets all your needs.

Alitherm 400 Windows, latest generation flush design.

alitherm 400 window in a new build home with cotswold stone and tiled roof

Designed with a range of sash options, including Heritage Flush Sash, Flush Sash, Standard Sash, and Tilt & Turn, Alitherm 400 windows cater to a variety of architectural styles and personal preferences. With the inclusion of Smart Quick-Glaze Beads for easier installation and co-extruded gaskets for enhanced weatherproofing, Alitherm 400 windows not only look stunning but also perform exceptionally well in your home. Expertly crafted, professionally fitted by us and fully guaranteed, all in a range of colours and finishes and glass options.

Alitherm 400 windows are available in multiple configurations, making them a versatile solution for various building types, from individual homes to schools, hospitals, and offices. Whether you prefer fixed, side-hung, top-hung, tilt & turn, or flush casement windows, Alitherm 400 offers the perfect fit. The flexibility of this system allows for seamless integration into new builds or refurbishment projects, ensuring that the windows not only meet but exceed current building regulations, including Part L compliance for thermal efficiency.

These windows are ideal for those seeking a modern, energy-efficient replacement for outdated PVCu, steel, or timber windows. The slim profiles and elegant lines of the Alitherm 400 system enhance the appearance of any property, while the advanced thermal performance keeps your home comfortable all year round. The variety of sash options means you can achieve the perfect balance between traditional aesthetics and contemporary functionality, making Alitherm 400 suitable for both period properties and modern homes.

One of the standout features of Alitherm 400 windows is their ability to provide exceptional weather and thermal performance. With a typical U-value of 1.4 W/m²K and a Window Energy Rating (WER) of Band A, these windows significantly reduce heat loss, helping to lower your energy bills. Additionally, the system’s robust construction and superior weatherproofing ensure long-lasting protection against the elements, making them a reliable choice for properties in any location.

For those looking for a flexible and stylish window system that does not compromise on security, Alitherm 400 is the answer. The PAS 24:2022 approval ensures that your home is safeguarded against potential intruders, providing you with the ultimate peace of mind. Whether you are installing windows in a new build or upgrading your current ones, Alitherm 400 offers a solution that combines cutting-edge design with practical functionality.

Features and Benefits of Alitherm 400 Windows

inside view of Alitherm 400 windows showing country kitchen

Alitherm 400 windows are designed with both form and function in mind, offering a range of features that deliver significant benefits to homeowners. The innovative Smart Quick-Glaze Beads make installation faster and more efficient, reducing disruption to your home and allowing for a quicker turnaround on projects. The co-extruded gaskets provide excellent weatherproofing, ensuring that your windows remain draught-free and watertight, even in the harshest conditions.

The versatility of the Alitherm 400 system is one of its key benefits. With multiple sash options and configurations available, you can tailor your windows to suit the specific needs of your property. Whether you are looking to create a traditional look with Heritage Flush Sash windows or prefer the modern functionality of Tilt & Turn, Alitherm 400 has you covered. Additionally, the system’s compatibility with a wide range of glazing options means you can further enhance the thermal and acoustic performance of your windows.

Security is a top priority for any homeowner, and Alitherm 400 windows do not disappoint. With PAS 24:2022 approval, these windows meet the highest standards for security, providing you with the confidence that your home is protected. The robust construction and advanced locking mechanisms are designed to withstand forced entry, giving you peace of mind knowing that your property is secure.

Trust Newlite Home Improvements with Your Alitherm 400 Installation

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At Newlite Home Improvements Ltd, we take pride in being your trusted local specialists in aluminium window installations. With years of experience and a strong reputation for quality and customer satisfaction, we are the go-to choice for homeowners looking to enhance their properties with Alitherm 400 windows. Our expertise, combined with our commitment to personal service, ensures that you receive the best possible advice and support throughout your project.

Our five-star Google reviews speak for themselves – we are dedicated to delivering exceptional results, every time. Whether you’re undertaking a full renovation or simply upgrading your windows, you can trust Newlite Home Improvements to provide a seamless, stress-free experience. We understand that choosing the right windows for your home is a significant decision, and we are here to help you make the best choice with our expert guidance and high-quality installations.

Client feedback left on Google and Facebook

Newlite Home Improvements

5.0

Based on 174 reviews

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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!