On April 14, 2021, the standard “EN 17456:2021 Wood flooring and parquet - Determination of top layer delamination of multilayer elements - Test method”
was published at european level (CEN).
This document specifies a test method to determine the top layer delamination of multilayer parquet elements with different structures, dimensions and adhesives for internal use as flooring, at the time of the first delivery of the product.
The document specifies a test method with three aging-treatments (AT1, AT2 and AT3) of the test specimens.
The test method described in this document allows to determine a top layer bonding quality
, also for parquet used on floor heating.The aging-treatment AT1
is a suitable treatment for the prognosis of multilayer parquets under dry indoor conditions and can be applied for all type of glues of parquets. It can be used for main underfloor heating systems.The aging-treatment AT2
is a suitable treatment for the assessment of multilayer parquets with PVAc-glues (Polyvinyl acetate adhesives) for top layer bonding.The aging-treatment AT3
is a suitable treatment for the assessment of multilayer parquets with different type of glues than PVAc for top layer bonding.
This document does not apply to the bonding quality of plywood if it is in use in the multilayer parquet construction.
Since last June 24, the UNI EN 17456 version has also been published.
The full document can be purchased from the on line UNI catalog.
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