"The Royal Institute of Chartered Surveryors (RICS) publication "Remedying Damp" is more cautious about reliance on third party accreditation, casting doubt upon the validity of the test methods employed, arguing that trials are usually conducted using "specially built masonry panels – which do not match up in many respects to walls found in real properties," and that "if a DPC were proved work in a specially built masonry panel, this would be the more significant result.