Alitherm 300 Casement

Upgrade your windows and improve your home with our versatile, slim, strong and stylish aluminium windows. Newlite offers the latest and the best aluminium windows to fit your property perfectly. Colour-rich, built to last, secure and energy-efficient.

The best aluminium replacement windows from Newlite.

At Newlite, our aluminium windows cater for every property type. From traditional to contemporary and everything in between. As a result, every one of our bespoke windows provides great value, elegant lines and excellent design.

Furthermore, your peace of mind is assured with premium quality replacement windows on the market from the known and trusted brands. Therefore even if you want a custom design as a feature in your home, we can help.

Another great feature of our entire window range is their bigger sizes compared to PVCu. As a result, you can have large expanses of glazing with minimal aluminium sightlines or extra mullions and bulk.

Best of all, any type of home benefits from the advantages of modern insulated window profiles.  From slimline cottage-style to contemporary grey windows and even steel-replacement windows. We design our windows to change the look of your home and also replicate the lines of your existing windows.

Alitherm 300 window in grey textured finish, kitchen area

Why Newlite provides the slimmest and best aluminium windows.

If you want to replace your existing old window frames or enhance a new bifolding or sliding door our windows are ideal.  Furthermore, the quality, security, energy efficiency and style of our windows covers almost every requirement.

  • Aluminium casement windows.
  • Sliding sash windows.
  • Aluminium bay and bow windows.
  • Apex windows and Gable windows.
  • Tilt and Turn windows.
  • Window and Door combinations.
  • Picture Windows.

Choose a Newlite-supplied product and benefit from A, B and C window energy ratings, certified security and excellent weather performance. Talk to us today to discuss your requirements.

best aluminium windows in a steel-look design fitted in Kent

Aluk Aluminium Windows.

Importantly, the Aluk brand offers some of the best-quality windows you can buy today. Our Aluk suite of quality, thermally insulated windows work in any home.  Choose from traditional and contemporary styles as well as tilt and turn, Heritage windows. Even more impressive are Aluk floor to ceiling windows, panoramic windows and feature screens. Therefore Aluk windows give you a complete home solution.

As a result of the quality of Aluk windows, you get long-lasting windows with minimal maintenance.

For over 20 years, Aluk products transform homes with durable, energy saving glazing solutions. Every Aluk window has premium grade materials, with modern clean lines and high performance glass.

Smart Systems Aluminium Windows.

Choose a Smart Systems window to suit every possible requirement.  The Alitherm aluminium window range includes steel-replacement aluminium windows, flush casement windows, tilt and turn and even reversible opening windows.

Smart Systems Alitherm Windows also enjoy a reputation for some of the best aluminium windows for the home.

Best of all, Smart Systems aluminium windows come in woodgrain, textured and standard powder coated colours for the ultimate in choice.

alitherm aluminium windows7.bak

Aluminium Windows Features and Options.

All our aluminium windows give you a host of features and options, whatever the size or the style. We work only with the leading UK manufacturers giving you superbly crafted windows in a beautiful powder coated colour of your choice. Create a unique look in your home with all these features as standard.

Low Maintenance.

Our durable powder-coated finishes look good for years with only routine cleaning required. For coastal houses, we can talk to you about marine-grade powder coatings for even more window protection.

Premium Quality.

Every component in some of the best aluminium windows meets or exceeds British and European Standards. From the aluminium extrusions to the paint finish, gaskets and glass. Our aluminium windows meet the highest requirements for performance.  BS6496 for paint finish, BS6375 for weather resistance, BS7412 for manufacturing are just some of the standards our windows meet or exceed.

Enhanced Security Windows.

We know the importance of home security and windows are no exception. Consequently, all our windows offer peace of mind enhanced security.  As standard, you get multi-point locking, robust window handles and secure window hinges. All our windows also comply with Secured by Design, PAS 24, or Document Q for new build homes and extensions. Talk to us about window security.

Colour-rich durable powder coated windows.

Choose from a huge range of powder coated colours including metallics and wood effects.

Almost every possible colour comes with aluminium.  There are over 200 colours available with powder coated aluminium windows. Added to this is a choice of gloss, satin or matt shades.

Furthermore, you can even choose different coloured windows inside and out enabling you to have even more choice and to perhaps match your interior decor in even more ways.

For the ultimate in a contemporary appearance, you can also have silver anodised, metallic effect or textured powder coated windows.

Finally, you can even have wood effect windows with an authentic grain and texsture.

The best alumnium replacement windows installed with expertise and care.

Above all, Newlite is your local home improvement company for over 25 years.  We, therefore, specialise in outstanding, functional and expertly crafted new windows. Even better are our competitive prices.  For any property in Sussex, Surrey and Kent, contact us today and let us help you transform your home. Every window is also installed with expertise, care and attention to detail.