Aluminum Clad uPVC Profiles Introduction uPVC + Aluminium windows combine the best properties of both materials. A profile of high quality aluminium is attached to a uPVC-frame. This is the perfect solution for all building projects aiming for noble visual appeal, stability of the aluminium profile and the superior thermal insulation of uPVC. With its outstanding static properties, it is ideal for large glazed areas. Aluminium and uPVC have been uniquely bound together, which is extremely economical: for manufacture, maintenance and energy efficiency.