All our kits are manufactured to meet the 2.5m height planning restriction. For more information on planning visit our planning permission page. All kits are designed to be self-build and come with instructions to enable easy installation by a DIYer. A kit normally takes between 3 and 5 days to fully complete depending on size and abilities. If you decide to use a trades person for your install, it should be completed in record speed saving on labour time. For more information see our SIPs Page. If you would like to view and feel the materials we offer, please contact us to arrange an appointment an appointment at our sales office in Derby.