Ameribuild is a company located in New Zealand that specializes in supplying double-glazed doors and windows across the country. Their primary item is uPVC (unplasticized polyvinyl chloride) joinery, which is known for its remarkable insulation compared to typical aluminum joinery. They emphasize the advantages of uPVC, such as its power performance-- being 26% more energy-efficient than the New Zealand building code requirements-- and its affordability, claiming to provide more affordable remedies than thermally damaged light weight aluminum options.