UPDATE - A new suite of details for windows with checked reveals has been added.
Recognised Construction Details ™ (RCD) provides energy assessors, builders, architects and other designers with a suite of independently assessed thermal junction details that have been certified for use in demonstrating compliance with Part L of the Building Regulations.
In order to reduce heat loss from new homes, achieve compliance with the current Part L 2021 and the forthcoming Future House Standard it is vital to understand how heat is lost through thermal bridging. Recognised Construction Details ™ (RCD) provides free to use construction details with accompanying Psi values and f values. These can be used in SAP calculations and the Home Energy Model which is currently being developed.
The site provides downloads to any user, however, there are benefits on creating a user account. Once you’ve registered as a user you can create your own projects and store specific junction details to these projects. Create an account here
In addition to providing an assessment of Ψ values Recognised Construction Details also provides a guide to constructing homes that meet the requirements of Approved Document B1: Fire Safety.
The portal has been developed by Building Alliance CIC, using the independently modelled junction details commissioned by the Concrete Block Association and The Aircrete Products Association.
The model Psi Values and the Fire Detailing Guide were authored by Studio Partington.
