The door to the future


doorsHere at National Windows we are delighted to introduce you to WarmCore – an innovative new solution that we now proudly offer.

Helping to redefine homeowners’ expectations of aluminium windows and doors, WarmCore has solved the problem traditionally attached to aluminium, forcing you to choose aesthetics and finish over thermal performance. Not so anymore; with its groundbreaking full-width thermal core and elegance of design, it is truly the defining product of 2015 for the fenestration industry and successfully outperforms the competition.

This hi-tech and elegant design philosophy has produced a folding sliding door with a thermal performance that keeps all the elements at bay, reduces fuel bills and delivers the ultimate in unparalleled security, with a unique five-point locking system and robust aluminium hinges and bolts. For added peace of mind, you can also choose the optional laminate glass upgrade, which gives WarmCore Secured by Design accreditation – the official UK police initiative that ‘designs out crime’ through physical security – on top of the independent certification that comes as standard in the benchmark of security performance requirements for windows and doors in the UK. As a result of this, it also carries a 10-year guarantee covering materials, surface finish and forced entry.  Energy efficient, recyclable, weather-resistant and of the upmost structural integrity, it is a product perfect for both residential and commercial buildings alike.

The ultimate in clean, modern aesthetics and with a wealth of colour, finish and style configuration options – including Tilt and Turn windows which can be tilted inwards for ventilation or swung inwards for cleaning - you will be proud to furnish your home with the refined and understated beauty of WarmCore. You can even choose to have different colours on both the inside and outside of your window for the ultimate in personalised design.

Built around a belief that beauty doesn’t have to compromise performance, it truly is the door to the future.