Month: July 2014

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 …

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