WarmCore technology changes the way that you look at aluminium windows and doors.

Stylish aluminium designs are paired with impressive thermal efficiency to create aesthetically pleasing windows and doors for your home.

Arguably the defining product of 2015 for the fenestration industry, WarmCore folding sliding, French and residential door system has been adopted by housebuilders and homeowners with equal enthusiasm and our newly introduced WarmCore aluminium window is built around the same full-width thermal core concept.

Sliding Doors.

Built around a belief that beauty doesn’t have to compromise performance, WarmCore aluminium folding sliding doors were created out of a desire to combine the desirability and durability of aluminium with unparalleled insulation. The orange thermal core – hidden away in the finished doors – is key to why WarmCore doors are 25% more thermally efficient than traditional aluminium systems.

Built WITH A REVOLUTIONARY thermal core at its heart

Strong and secure, WarmCore doors come with class-leading security built-in, backed by a comprehensive

10-year product guarantee, reinforced by the ERA Five Star security guarantee. Inwards or outwards opening doors up to 6m wide, with as many as 7 opening sashes glide along custom designed tracks. While a wealth of colour, style and configuration options help you choose the perfect warm, secure and beautiful WarmCore door for your home.


Whether you are tucked up inside watching TV with your WarmCore windows protecting you from the elements or have your windows flung wide open on a hot Summer’s day you can be assured your high-performance aluminium windows will look pristine.

With clean, modern lines, WarmCore creates windows with refined and understated beauty. Perfectly suited to modern architecture as well as replacement projects, from large fixed pane ‘picture windows’ to windows with multiple openers, WarmCore has it covered.

Attention has even been paid to how the window sashes look when open, with the black full-width thermal core creating a neat and thought-through appearance.

Why choose aluminium?

When you choose aluminium windows and doors, you will benefit from virtually maintenance-free, rust, rot and flake-free windows as well as thermal efficiency, durability, noise reduction and ultimate security.

  • They offer strength maximizing on your safety and security
  • They are highly durable and last for many decades
  • Aluminium is highly resistant to corrosion and other weather-induced effects such as excessive wind, water and air infiltration
  • They are environmentally friendly due to their recyclable nature
  • They use less frame and slim lines leaving out more glass space for increased visibility and lighting.

Call in and see our range today at Unit 1, Murdoch Road, Bicester or call us on 01869 327900 and see our aluminium windows range.

How can we help?

If you'd like to discuss any of the products we offer at Bicester UPVC, call us on 01869 327900 or complete the form. One of our team will be in touch to help you with your enquiry.