DfE confirmed that its policy is not to remove all asbestos in the school estate, as this would be expensive and dangerous. However, we raised with DfE a case where a school thought it knew where it had asbestos, but much more asbestos was found when contractors demolished a block affected by RAAC, causing additional complications. DfE emphasised that it expects contractors to carry out a thorough asbestos survey before doing invasive work to deal with other structural problems.39 Asbestos and RAAC can be present in the same building.