What is the advantage of the additional aluminium outer shell?
Using uPVC and aluminium in the same product gives you the combined advantages of two modern materials at once. The robust aluminium shell protects your tilt and slide patio doors from weather-related damage while offering a greater level of stability. It also contributes to an improved degree of break-in protection. Moreover, the internal uPVC multi-chamber construction means you will also enjoy outstanding thermal insulation you can rely on. In addition, both materials are extremely easy to care for and will last a long time as a result.