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in stockReleased: 2021-03-24
UNE EN 927-7:2021
Paints and varnishes - Coating materials and coating systems for exterior wood - Part 7: Assessment of knot staining resistance of wood coatings
Pinturas y barnices. Materiales y sistemas de recubrimiento para madera exterior. Parte 7: Evaluación de la resistencia a la tinción de nudos de recubrimientos de madera.
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| Standard number: | UNE EN 927-7:2021 |
| Pages: | 15 |
| Released: | 2021-03-24 |
| Status: | Standard |
| Pages (Spanish): | 16 |
DESCRIPTION
UNE EN 927-7:2021
This document specifies a test method for assessing the discoloration of coating systems on wood due to wood extractives from knots. The discoloration is measured by colorimetry and the result is stated as the colour difference between the coated surface on the knot and the coated surface beside the knot.