They are moulded on site to any shape, easily coping with penetrations through the roof such as soil pipes/vents, skylights, fan and plant housings, without compromising the seamless application. They have excellent elasticity and tensile strength, and are root resistant, making them ideal for green roofs. All our roofing systems can be specified with the confidence and knowledge which comes with a quality and proven product, together with a thoroughly professional installation process. We have very many happy and satisfied customers around Norwich and Norfolk and references are always available.