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PCA Certificated Surveyor of Dampness in Buildings Sample Questions:

1. A surveyor observes damp on a ground floor at 450mm height with clear white salt tide mark extending to
700mm. No external defects are visible. Calcium carbide test shows 24% moisture. The diagnosis is:

A) Condensation
B) Leaking internal pipes
C) Penetrating damp only
D) Rising damp confirmed by height, pattern, and moisture content

2. Rising damp and penetrating damp are differentiated during diagnosis primarily by:

A) Appearance only
B) Location pattern (rising damp shows tide marks from ground; penetrating damp linked to external defects and rainfall) and diagnostic testing
C) Building age
D) The surveyor's guess

3. A property has been treated with chemical DPC 6 months ago. The owner reports internal walls are still damp with visible mould. The surveyor investigates and finds: high salt content still present in plaster, inadequate heating in the property, and poor ventilation. The most appropriate recommendation is:

A) Address salt contamination through selective removal/remedial plastering, improve heating and ventilation to manage residual moisture
B) Recommend immediate reconstruction
C) Accept permanent damp
D) Repeat chemical DPC injection

4. Black mould identification in buildings should note that:

A) Mould has no health implications
B) All mould is identical
C) Appearance varies; confirmation requires testing; health risks exist particularly for vulnerable occupants
D) Mould is purely cosmetic

5. BS 5250:2021 recommends ventilation rates in kitchens to control moisture from cooking:

A) Opening windows occasionally
B) No ventilation needed
C) Continuous extraction ventilation throughout the day with higher rates during moisture generation (cooking)
D) Ventilation only in winter

Solutions: