As the market leader in the supply of single ply roofing membranes We strive to ensure that we are on top of all relevant regulatory changes, and that we advise our Registered Installers and clients of the impact of any changes. However we appreciate that not everyone is as diligent and may provide contradictory information to that on this page. That is why we have listed below independent bodies that can be consulted on this key topic and included a copy of an article that appeared in Construction Manager Magazine in July 2007.