Founded in 1960 near Venice, Italy, by the Zanchetta brothers, Polyglass has grown from a roofing contractor innovating contractor-friendly materials to a leading global manufacturer of modified bitumen membranes and roof coatings. Operating six advanced facilities—five in North America and one in Europe—it became part of the Mapei Group in 2008, strengthening its focus on quality and innovation. Polyglass pioneered self-adhering roofing membranes with ADESO® Technology and continues to develop sustainable solutions like its recent PMMA liquid-applied membrane. Committed to Seal the Envelope™, Polyglass fosters a culture of creativity and integrity, aiming to protect building exteriors with durable, energy-efficient products while honoring its family-owned roots under CEO Natalino Zanchetta.