CEN/TR 17809:2022

Durability of wood and wood-based products - Remedial treatment of wood against insects by injection CEN/TR 17809:2022

Publication date:   Jun 14, 2022

Scope

This document provides guidance on how to apply curative acting wood preservatives by surface application, by filling pre-drilled holes, and by pressure impregnation through pre-drilled holes. It lists methods in a standardized form followed by additional detailed interpretive information.
This document also includes necessary preparations of structural timber prior to this kind of treatment. It gives guidance on how to calculate necessary retentions for filling pre-drilled holes or for pressure impregnation from test results obtained from surface applications (e.g. EN 1390).