The reason we install vinyl windows is because they are superior to wood, and ours are built with an advanced u-PVC material that has great color stability and resistance to ultraviolet exposure and impact. They provide very high degree of insulation, stability and durability, and they will never need painting or refinishing to keep their lasting beauty. Multi chamber designs of profiles have empowered vinyl windows with a strength, energy efficiency, and performance. The effect of multi-chambers on strength is well documented. Our welded profiles provide 9 to 20 inches of weld seams, and window designs exist with as much as 25 inches of frame and 14 inches of sash weld seam.