FineLine weld from ProVia

ProVia’s FineLine weld technology uses a proprietary welding process to join vinyl window corners. ProVia’s FineLine weld technology is engineered to enhance the aesthetics of the corner without a secondary cleaning and finishing process, resulting in a neat, seamless appearance and enhanced fit and finish to Endure windows and patio doors. On woodgrain options, the FineLine weld is designed to produce a delicate, smooth line and achieve a picture-frame quality finish reminiscent of handcrafted woodworking. White, beige, and sandstone color frames and sashes can achieve a clean and subtle line, devoid of any welding slag or bulge that can mar the appearance of the sash, according to the manufacturer. ProVia uses an on-site lab to test products for air leakage, water penetration resistance, and structural integrity to ensure a premium quality window or patio door that meets or exceeds ASTM and AAMA A440 standards. provia.com