Royston Glass will use reasonable endeavours to repair or replace free of charge, any coating which is found to be de-laminating or discolouring within a period of 5 years from the delivery date. This guarantee is subject to full payment for all products, charges, fees and reasonable notice by the customer of such fault to Royston Glass. The customer must maintain and clean the product(s) in a proper manner. This guarantee excludes wilful damage and normal wear and tear. An installation undertaken by Royston Glass is valid for 12 months from the installation date. The guarantee only applies to the customer noted on the order form and is not transferable. This does not affect any Statutory Rights.