Stellar RETAIL brochure

The Stellar performer Aluminium systems have come a long way since their earliest days. Now, Stellar is pushing standards even higher, with insulation and weather protection a fundamental part of the design, not an afterthought. Window Energy Ratings In windows, insulating performance is calculated using a mixture of air leakage, solar gain and thermal transmittance. Combining the three calculations can get complicated, but they’ve been simplified into a single measure known as a Window Energy Rating or WER. The performance depends on several variables, including the layout and size of the window and the choice of glass. Stellar offers a choice of double or triple glazing, and with triple-glazing can reach an A+ rating for outstanding energy efficiency. Let’s talk about the reverse butt joint weld Forgive us for diving into window jargon, but the reverse butt joint is something unique to Stellar and is one of the features that makes it so special. Glass in a window frame is held in place by a bead. For security, it’s better that the bead is on the inside. When a fixed pane is situated next to a pane that opens, the ideal is to reverse the frame so that the opening pane fits snugly against it. This is straightforward with PVC-U which can be welded, and a skilled carpenter can craft a strong, neat joint in a timber frame, but aluminium frames are crimped, not welded. The conventional way to manufacture an aluminium window is to include a dummy sash in the frame to avoid having a bead externally, But, frankly, it looks a little clumsy. There’s no point choosing aluminium for its slim appearance and then adding the extra weight of a dummy opener. And that’s the problem that Stellar’s design solves. It allows internally glazed frames that are and neat and uncluttered, and which let more light into your home. It also uses less material, so it’s a more sustainable design. “Reverse butt joint” might be jargon to some people, but to those who know windows, it’s a quantum leap. WER up to Band A+ Air permeability tested to 600Pa U-values can be as low as 1.1W/m 2 K Wind load resistance to 2000pa Water tightness to 600Pa Can be double or triple glazed 12