DIN EN 252:2015-01

This European Standard specifies a field test method for evaluating the effectiveness of wood preservatives in a ground contact situation. Wood treated with a reference preservative is included for comparison. The method is primarily concerned with protection against microbial attack. However, it is also capable of being used in areas where a termite hazard exists. This field method provides one criterion by which the effectiveness of a wood preservative product can be assessed in a ground contact situation (Use Class 4 according to EN 335). With respect to DIN EN 252:1990-04, the assessment criteria for fungal decay and the description of the assessment criteria for termite attack have been modified. Annex A regarding the testing of untreated wood, Annex B regarding the characterization of the field test site, Annex C regarding the setting up of field stakes into the ground and Annex D regarding the determination of the modulus of elasticity of wood stakes have been added. The example of a test report in Annex E has been extended. The committee responsible for this standard is NA 042-03-06 AA "Spiegelausschuss zu CEN/TC 38 und ISO/TC 165/SC 1 Dauerhaftigkeit von Holz und Holzprodukten" ("Mirror Committee of CEN/TC 38 and ISO/TC 165/SC 1 Durability of wood and wood-based products") at DIN.