Renewal by Andersen® of Southeastern Mass and Rhode Island’s High-Performance™ Low-E4® glass is the latest advancement in window glazing. Apart from reducing the need for maintenance, its best benefit is providing excellent energy efficiency.
How does it elevate the performance of our replacement windows? Let’s look at its key elements:
Low-E4 glass packages consist of two panes with optimum distance in between. Our parent company, Andersen® Corporation, optimized the width of the air space to effectively minimize thermal transfer. Studies reveal that lacking enough space diminishes the double glazing benefit while setting the two panes too far apart from each other increases heat loss.
Spectrally Selective Low-E Coating
On the inside surface of its exterior glass, the Low-E4 glass features multiple, spectrally selective low-emissivity coatings. Compared to ordinary double-pane units, windows with several layers of Low-E coating reflect more solar heat and ultraviolet (UV) rays without blocking too much sunlight. During colder months, the Low-E coating bounces indoor heat back inside to keep the interior warm without wasting energy.
Argon Gas Blend
Argon is one of the best insulating gases. Unlike carbon dioxide and Freon, it isn’t sensitive to seal failure and doesn’t discolor. To reconcile performance with cost, we developed our own argon gas blend. It also helps improve the soundproofing characteristics of our windows.
Stainless Steel Spacer
In a nutshell, the spacer keeps the two panes stable and acts as a moisture barrier, preserving a gas-tight seal. Inferior spacer materials, such as plastic and aluminum, conduct more energy and deteriorate over time. We chose to use stainless steel because it doesn’t move, which means no seal breakage. Thanks to its incredible strength, we’re able to use a thinner spacer wall to resist heat transfer better.
We use two sealants to keep the panes of our replacement windows in place. Our compressed butyl serves as a gas barrier while our specially formulated silicone provides structural support. But the secret to their uncompromising adhesion is our precise sealing process. We remove the Low-E coating around the embedded glass edge to provide our sealants a clean surface to stick to.
Set up an appointment with Renewal by Andersen of Southeastern Mass and Rhode Island to learn the difference among the Low-E4 glass packages. Call us at (401) 396-3300 to schedule your free, no-obligation, in-home consultation in Rhode Island or Massachusetts.