Specific average moisture generation rates.

Specific average moisture generation rates.

A  person could perspire and exhale 40 g of water vapour per hour when sleeping, 70 g/h when seated and 90 g/h when standing or doing housework. 

Theoretically, if the occupants didn’t leave the dwelling, slept for seven hours, sat for ten hours and stood or did housework  for seven hours each could generate 1.6 Kg of moisture purely due to metabolic moisture generation.

Dampness in Masonry & Timber

Dampness & Buildings

Dampness in Masonry & Timber    

Dampness or moisture within masonry is the other area of observation the specialist surveyor must understand. A knowledge of general construction, basic design, materials and methods is essential. In underground structures and environments that knowledge must also extend to soil and rock strata, water tables and salt content. A knowledge of topography and drainage is essential.