Energy use is more critical now than ever. Unlike thermal conducting aluminum windows uPVC is a natural insulator. AGG (Australian Glass and Glazing) profiles have 5 internal chambers formed and designed to meet impact, weathering performance and insulation performance. uPVC windows have always had advantages over aluminum and steel and long-lasting advances in design have made uPVC windows a high-quality product that competes favorably with wood.

Metal is a highly efficient heat conductor a great property when it comes to pots and pans, but not so slick when you’re talking about window frames. As window glazing has improved, the difference in insulating value between the glass and the frame of a metal window became greater and greater.

uPVC, on the other hand, is a nonconductor of heat. Design of a uPVC window frames and multi chamber construction adds greatly to the frame’s insulating value. Aluminum windows use mechanical fasteners to joint frame and sash corners. Those connections are subject to racking and air/water leakage. Instead. uPVC window system use fully fusion welded frame and sash corners. The result is a water tight joint that gains its superior strength from the entire cross section of the profile instead of only a few screw points.

Good quality uPVC windows are equal to wood windows in their overall insulating value, but not just because of the frames. Compared to wood windows, the factory build modern uPVC windows allows only a fraction of the air leakage around the sash. As a rule, air infiltration is even more important than insulating quality in preventing heat loss. Double glazing doors and windows made from uPVC are probably the most popular types of doors and windows on the market today.