Addition of new doorsets to accommodate revised layouts either replicating existing, or alternatively, in a contrasting or possibly more modern style. In order to ensure the long-term usability and viability of historic buildings, there may well be a requirement to meet stringent performance standards, as indicated by today’s Building Regulations. For doors, frames, architraves, reveal panelling and other similar elements, this can present a real challenge, requiring a considered balance between intervention to achieve compliance and protection of essential architectural characteristics.