Powder coating aluminium is a very durable method of providing a decorative finish to windows, doors and conservatories. An additional process has also been developed which allows high-quality wood grain to be produced on aluminium, combined with all the protective advantages of powder coated aluminium windows and doors.

A special polyurethane powder coating is applied to the aluminium, and part-cured. The design is printed onto a film, using inks which sublimate when heated. The printed film is then wrapped round the coated aluminium (for windows and/or doors), made to adhere firmly by vacuum processing, then heated to approx 200°C.

The colour from the ink sublimates onto the powder coating and diffuses into it, producing a permanently fixed decorative effect. In layman's terms the wood grain effect becomes part of the aluminium, so is literally becomes an ingrained aluminium wood effect window or door, and therefore is an extremely robust hardwearing product.