The corners of the window frame and sashes should be fusion-welded (heat-welded) for a weathertight construction. Beware of windows with mitered corners screwed together or chemically welded corners, as they may decline in performance over time. You’ll also want to take a look at the vinyl extrusions in the window frame and sash. At a quick glance all vinyl windows may look similar, but there can be dramatic differences in the quality of the vinyl used. Some windows, built with lower-quality vinyl that has a dull blue or gray cast, can become brittle over time. Alside Windows are constructed with premium vinyl extrusions to ensure the frame and sashes provide long-lasting beauty and performance.
What other features should be considered when buying windows?
When you compare one window to the next, you’ll see – and feel – the quality difference. Alside Windows begin with a computer-controlled construction of the mainframe and steel-reinforced sash to produce a solidly built window with superior strength. Most windows come standard with double-strength glass for an exceptionally strong barrier. Interlocking meeting rails and thickset multi-chambered extrusions further add to the structural integrity and insulation, while multi-layer weatherstripping, a compression bulb seal and drop-in glazing provide excellent thermal protection. You’ll also want to test the window’s moving parts. Alside Double-Hung Windows, for example, feature a full interlock at the meeting rails to seal the window tightly shut and a constant force balance system to ensure smooth and easy operation of the moving sash.
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