A Deposit Thickness Test is an approved technique that is used to assess the level of deposit build up within ventilation ductwork. The tests provide a reliable and quantitative way of measuring the degree of cleanliness of your ductwork, which in turn will help to determine when and how frequently cleaning is likely to be required in order to keep your ventilation quality up to a high standard.
The TR/19 standard specifically addresses the need to measure the build up of deposits and specifies a set of upper limits within Section 5 based on good practice.
Controlling ducting deposits and monitoring their build up is essential to maintain hygiene standards and reduce fire risks in heating and ventilation systems.
The deposit thickness test measurement is made using equipment specifically designed for the purpose of testing deposit thicknesses in ventilation systems. The system can measure to an accuracy of just a few percent. It is particularly useful to run the deposit thickness test before and after duct cleaning.