Ensuring the quality of the waterproofing

Reliable drying and checking the layer thickness


Measuring the wet layer thickness

Ensuring the quality of waterproofing is outlined in the standard DIN 18195.  The test can be performed quickly and easily. It offers the applicator a very high level of security and serves as proof for the client that the work has been carried out. As part of the quality assurance the wet layer thickness specified by the manufacturer is checked by way of taking several measurements.

Per project or for each 100 m² at least 20 measurements  are taken. The results are documented in a production report*. This type of check ensures the dry layer thickness across the entire surface area is adequate. 

Checking the curing

In addition to the wet layer thickness, a check is also made that the layer has fully cured. In the case of the reactive waterproofing with RD 2 The Green 1, this check is done through a visual inspection.  In the case of a bitumen thick coating the check involves a destructive testing, i.e. taking a reference sample to determine the progress of the curing. To do this test a wedge of the bitumen thick coating is placed onto the substrate in an area that is similar to the brickwork. This wedge is then stored in the building pit, since the drying conditions are here the  least favourable.

Depending on the quality of the material used and depending on the temperature conditions present, the bitumen wedge is cut into after 2 to 3 days with a carpet knife. Only if the material shows a firm and compact consistency can the drying be deemed fully complete. And only then can the drainage and protection board DS 993 be installed. All individual tests performed in waterproofing works should be documented in writing as a matter of course. Upon request we will be happy to provide you with our production report* for ease of use.   

Expert Tip:

1

Measuring the wet layer thickness

2

Destructive testing of the reference sample

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