It is well-known that surface condensation is the result of moisture laden air coming into contact with a cold surface. In essence warm air can take up more water vapour then cold air and as such when it is cooled there comes a point where the air can no longer retain the levels of moisture […]
How to
What is salt damp?
Nitrate, chloride, sulphate and ammonium salts are found in building structures. Nitrate and chloride salts most commonly originate in the ground. Their presence in plasterwork is usually an indication of rising damp, hydrostatic or below ground damp or flood damage. Nitrate and chloride salts are hygroscopic, causing them to retain moisture and absorb additional moisture […]
How to test for damp
Testing for dampness using a conductivity ‘pin’ type meter is intended to allow the user to compare readings in order to interpret the pattern and deduce the likely cause(s). Do not use the meter to justify expensive building works without consulting a qualified expert because high conductivity readings can be caused by ‘salts’, foil backed […]