Aluminium Windows and Doors general information

Aluminium is a lightweight, high-strength material that is used is virtually every facet of the modern construction industry; from patio doors in homes to curtain walling on the tallest sky scrapers. Aluminium windows and doors are the material of choice for architects and specifiers on commercial applications and increasingly popular with home-owners.


Because of the unique properties of aluminium it is incredibly formable and can be bent or shaped into innumerable architectural designs. It is also very durable and highly resistant to corrosion caused by modern industrial pollutants, requiring little long-term maintenance. The lifespan of aluminium products is measured in decades rather than years.

Sustainable products

Aluminium is arguably the most sustainable building material in the world and is highly recyclable. When the old Wembley Stadium was demolished, 96% of the aluminium was reclaimed and recycled.

The recycling process creates high quality aluminium which loses none of the physical properties of primary aluminium and also uses just 5% of the energy it takes to create primary aluminium. This is why aluminium in generally regarded as the world’s most sustainable building material.

Aluminium framed windows and doors are more expensive than their uPVC counterparts, however we are always happy to quote on all the options available to you, so that you can make the final decision.

Aluminium Window Thermal Breaks

The introduction of polyamide technology in recent years takes aluminium doors and windows it to a new level, it offers big improvements in thermal insulation. So thermally broken aluminium windows and doors use a barrier in this way to improve insulation and energy efficiency. The thermal break in aluminium is a barrier that breaks the aluminium to aluminium contact from the inside to the outside of the window. Today's technology means the thermal barrier conducts up to 1,000 times less heat than aluminium.

Aluminium Windows & Doors Colours

With the most popular colour choices of white, grey (RAL 7016),  silver, black or brown frames, KJM’s aluminium windows and doors are an ideal way to enhance your home, whatever the style. If you would like to visit our windows showroom in Andover, Hampshire, we would be pleased to show you examples of our aluminium systems and the vast array of colours available to you.

Our aluminium windows and doors are:

  • Available as direct fix (without a subframe)
  • Or can be manufactured with a timber subframe for the classic look
  • Aesthetically pleasing
  • Sapa Crown aluminium systems
  • Alitherm Series 300 - 600 - 700 - 800
  • Meets the highest standard for air and water infiltration and structural integrity
  • Aluminium offers the slim sight lines
  • Virtually maintenance-free and they add to the comfort and ease of your home by keeping noise out and heat in.
  • Available in any RAL colour
  • Full commercial applications available with our Shop-line System


Download our free Sapa Crown Windows Brochure

Download our free Smart Alitherm Heritage Brochure

Download our free Smart Alitherm Window/Door Brochure

Download our free Smart Alitherm Data Sheet

Choose from our range of Pilkington Pattern Glass

KJM Windows & Conservatories from Andover, Hampshire for aluminium double/triple glazed windows and doors. We also install across Southern England, including Surrey, Dorset, Wiltshire & Berkshire

Our no pressure promise

At KJM Windows & Conservatories, we pride ourselves on our no hassle, no pressure approach to providing high quality home improvement products to the thousands of customers who have put their trust in us since 1982.

find out more