The most common materials for Replacement Windows are Vinyl, wood and aluminum. Increasingly versatile Vinyl Replacement Windows and Custom Sliding Doors are becoming the preferred choice for those seeking the absolute best balance between price, strength and Energy Efficiency. Vinyl Replacement Windows need the least amount of care not ever needing to be stained or painted. Replacement Vinyl Windows and Custom Glass Sliding Doors are constructed with "multi chambers" increasing their ability to retain heat in your home during the cold winter months and trap cool air during the heat of summer.