Free damp & mould tools
Practical, free tools for damp and mould surveyors, housing teams and landlords. No sign-up, no catch.
Awaab's Law deadline calculator
Enter the date you became aware of a damp or mould hazard and get the statutory investigate, written-summary and make-safe deadlines, counted in working days.
DiagnosisDew point & condensation risk calculator
Enter air temperature and relative humidity to find the dew point, then add a surface temperature to see whether condensation and mould will form.
DiagnosisU-value calculator
Build up a wall layer by layer to get its U-value (thermal transmittance) and understand the cold-surface condensation risk that drives mould.
DiagnosisVentilation rate calculator
Turn a room's size and extract flow into air changes per hour, with the Building Regs Part F extract minimums for wet rooms.
More tools are on the way. In the meantime, explore the complete damp and mould guide or see how the full damp & mould survey software platform works.