CPD explains important practical changes and additions to BS 5422 ROCKWOOL, the UK's leading stone wool insulation manufacturer, has launched an 'Introduction to BS 5422', a new CPD (Continuing Professional Development) module to support specifiers and engineers with advice on how to plan and implement the insulation of building services systems following a recent update to the standard. The CPD coincides with the recent publication of ROCKWOOL's Guide to BS 5422:2023. BS 5422 provides a method for specifying thermal insulating materials needed on pipes, tanks, vessels, ductwork and equipment for certain defined applications and conditions within the temperature range – 40°C to +700°C in domestic, non-domestic and commercial buildings. The standard works as guidance for consultants, engineers, contractors and manufacturers of thermal insulation in the building services sector.