UPVC, also known as Unplasticized Polyvinyl Chloride is a multilayer roofing sheet. It is a popular material due to its durability and it being a cost-effective option. These sheets have attractive design and appearance, possess wide range of advantageous properties and have an affordable price. The main advantage of all high quality UPVC products is that they never need painting, plus the only maintenance they really tend to need is a wipe down with a damp cloth once every couple of years or so.