Twinfix is a family run business in operation for over 25 years. From our manufacturing facilities in Warrington we Design, manufacture and install polycarbonate roofing products. Our main product for the rail sector is out non fragile multi-link panel glazed with different types of polycarbonate depending on the visual and performance requirements. . This system is very quick to install therefore very well suited to short rail possessions the off site construction of it also reduces site errors. The robust nature of polycarbonate also ensures the product is very durable and will not break or crack.