Effective 1 July 2013. This edition is updated in the light of the European Construction Products Regulations 2011, and particularly confirms the requirement that building products covered by a harmonised European standard should normally have CE marking. Guidance on resistance to moisture and substances in the subsoil has been deleted as it is in Approved Document C, as have examples of materials susceptible to changes in their properties. This Approved Document has a fresh new look and has been totally re-designed into a single column format to make reading. It has also been subject to a thorough editorial review to make the text/content more reader-friendly and simpler to assimilate and understand. Contracts and Management Publications Update Service: To ensure that you have the most up-to-date Approved Document or Amendment to an Approved Document to hand, you can now join our CAMPUS service. RIBA Bookshops will automatically send you copies of new releases as and when they are published. Visit our CAMPUS page for further details.