Mould-risk estimator (ISO 13788 threshold)

10–25 €

TempPro / ThermoPro TP50

Example desktop hygrometer for diagnosis. Without a relative-humidity number every tip is guesswork. Not a lab review.

When: Always, as the first diagnostic step.

Not when: It does not replace a moisture meter or a rising-damp survey.

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25–45 €

Pinless wall moisture meter (e.g. RDINSCOS)

Example material moisture meter, no drilling. It helps compare “damp air” and “damp wall”: low vs high, stained vs sound. Absolute numbers are rough. Not a survey instrument.

When: Suspected rising damp or a leak; you want to see whether it starts at the skirting.

Not when: It does not certify a building, does not measure air RH, and does not replace a surveyor if there are salts, crumbling plaster or stains after rain.

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8–18 €

Spray/foam for visible mould (e.g. HG 500 ml)

Example product to remove mould already visible on silicone, grout and tiles. It cleans the surface; it does not dry the air or close a thermal bridge. Covering paint alone, if moisture stays high, is a delay.

When: After you understand the cause, while RH is being lowered or vapour extracted. Small surfaces, household use.

Not when: Large areas, strong odour, vulnerable occupants — consider a professional. Not medical guidance and not a structural treatment.

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Read the label and safety data sheet before use.

40–80 €

Bosch UniversalTemp (IR thermometer)

Infrared thermometer to estimate cold wall/glass temperature (thermal bridge / condensation risk). On glass it reads the surface; for more consistent comparisons use a piece of matt tape. Not a joinery survey.

When: You want to compare dew point with the coldest surface (glass, reveal, behind a wardrobe).

Not when: It does not measure RH, certify a building, or “see” water in the wall.

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8–18 €

TempPro / ThermoPro TP49

Mini hygrometer, same job as the category: room temperature and humidity. Category example, not a lab test.

When: Small spaces, or when you want to move it from room to room.

Not when: It does not measure moisture in the wall.

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15–30 €

ThermoPro TP49 (2-pack)

Two mini hygrometers to compare rooms (bath vs bedroom). Zone comparison, not a survey.

When: You want to see whether the problem is in one room only.

Not when: It does not replace a one-week log with one reliable instrument.

Amazon.it affiliate link (tag qordac21-21): we may earn a commission, at no extra cost to you. A category example, not a lab review. Amazon.com is not used.