Accurate diagnosis of damp and timber problems in buildings is essential to ensure appropriate remedies without the unnecessary use of chemicals and undue expense. The BWPDA has always promoted training for surveyors and two separate qualifications were developed to assess surveyors’ knowledge and competence in timber and damp diagnosis.

From 1995 these were superceded by a combined professional qualification for remedial surveyors - the Certificated Surveyor in Remedial Treatment (CSRT).

The CSRT qualification is examined and awarded on behalf of the BWPDA by The Institute of Wood Preserving & Damp-proofing (IWPD), an independent educational charity.

Covering diagnosis and specification of works for dampness as well as decay and insect attack of timber, the examination also includes an assessment of the candidate's knowledge of relevant health, safety and environmental legislation.

Upon passing the written and oral examinations, successful candidates may use the initials CSRT after their name to signify their status