What is an acceptable damp reading

What is an acceptable damp reading?

Determining the severity of dampness in buildings is crucial for maintaining a healthy indoor environment. Damp readings are measured using a moisture meter or hygrometer, and are expressed as a percentage.

Acceptable damp readings vary depending on the material and location within the building, as different materials absorb and retain moisture differently. Generally, the following readings are considered acceptable:

  • Concrete: Less than 18%
  • Masonry: Less than 25%
  • Timber: Less than 20%
  • Plasterboard: Less than 15%

Elevated damp readings can indicate excessive moisture buildup, which can lead to mold growth, structural damage, and health issues. If damp readings exceed acceptable levels, it is recommended to seek professional diagnosis and implement appropriate remedial measures.