Specialists in Building Drying
By a process of elimination and in-depth construction knowledge it is relatively straightforward to locate the cause, extent and spread of suspected water ingress. Using a range of specialist moisture measuring equipment we are often asked to provide easy to understand condition reports and practical recommendations for drying. Electrical moisture meters can’t diagnose the cause of damp but they can provide an indicative measurement which might pinpoint areas worthy of further investigation.
Dual Mode Moisture Meters
This mode of measurement is not adversely affected by the presence of surface moisture. It transmits a radio frequency signal into the material to detect moisture at depth up to 3/4 in (25.4 mm) below the surface. The relative moisture level is shown on the digital display and its moisture condition is shown on the accompanying scale of color-coded lights.
This mode is used to measure the moisture level at the surface and at incremental depth. The readings produced are precise and specific to the immediate area of contact of the electrodes. The comparative moisture content is shown on the digital scale in the form of color-coded lights. A range of auxiliary probes such as hammer electrodes and deep wall probes can be plugged in to establish the presence of moisture in different building materials which might otherwise go undetected.
Is typically used to measure relative humidity at depth. Unlike pin type probes the readings given can’t be misinterpreted and won’t give a false-positive reading due to salt contamination or electrical conductance.
Using this method a hole is drilled to a suitable depth in the concrete structure to be measured and a plastic sleeve is inserted. The hole is covered with a plastic cap and the humidity of the air in the hole is left to equalize with the humidity in the concrete. Readings below 75% (relative humidity) indicate that a concrete slab or floor screed is sufficiently dry for floor coverings to be laid.
Detailed damp survey reports provide practical guidance on the level of stripping out required, and appropriate use of drying resources.
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