Monmouth Vinyl & Fiberglass is now a proud FiberGutter installer! FiberGutter is a polyester resin based fiberglass gutter that is manufactured through a mechanical process called pultrusion. FiberGutter offers the appearance of a beautiful traditional wood gutter, while also being the STRONGEST GUTTER AVAILABLE. These Fiberglass gutters carry a 50-year warranty and are maintenance free. Get the most durable gutter on the planet!