Visual assessment of defects in surface dressings (according to NBN EN 12272-2)

This test method describes how the defects in a surface dressing can be visually assessed. These defects include fatting up, tracking, bleeding, scabbing, tearing, fretting, and streaking (more information on these various forms of distress can be found in BRRC’s code of good practice R71/01 “Code de bonne pratique pour les enduits superficiels”).

Damage can be assessed in two ways: qualitatively and quantitatively.

A qualitative method will assess the rate of damage by simple rules. The quantitative method will measure the defects in much more detail.

After careful consideration, the Belgian mirror group for CEN TC227/WG2 has decided to adopt the qualitative method in Belgium. This has been laid down as such in the standard tender specifications of the three regions in Belgium.

Description of the measurement method
The measurements are made by the qualitative method described in standard NBN EN 12272-2 Visual assessment of defects.