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19 November 2008 05:56:09 GMT |
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Dry Rot Sensors - Instructions |
What is it? | Examples | Instructions | Typical Questions | Technical Data | Safety Recommendations | Case Study | Validation | Datasheet | Distributors |
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| There are 5 stages in the procedure as described. Sensors are installed in small, pre-drilled holes within the areas identified as at risk. They are monitored usually for about two weeks during which time they reach equilibrium with the building substrates, and react to the presence of the dry rot fungus. Sensors installed beyond the "at risk" areas will confirm that there is no dry rot activity. There is no need to uplift floors or to remove plasterwork. The extent of spread of dry rot can be determined from examination of the sensors. 1. Fit sensors 2. Allow to equilibrate 3. Examine sensors 4. Record affected areas and "at risk" areas 5. Monitor "at risk" areas for a further period Sensors may be installed where there is a risk of dry rot presence or dry rot development. They may be installed in plaster, in wood, or in brick or masonry walls. The sensor is installed by placing it in a pre - drilled 7mm hole in the beam or wall. The hole should be deep enough to fit the sensor fully into the hole (100mm deep). After 14 days remove the sensor for examination. If the colour has changed from blue to yellow - at any point on the sensor - there is dry rot present. You should get help. If there is no change in colour or you are not sure place the sensor back in the hole and re-inspect after a further 14 days. Continue this process until the end of the test period, or until you are satisfied the beam or wall is fully dry. |
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