1 Scope
This document establishes a classification for one component polyurethane (PUR) adhesives according to their suitability for use in load-bearing timber products in defined
climatic exposure conditions, and specifies performance requirements for such adhesives
for the factory manufacture or factory-like manufacturing of load-bearing timber products
only.
It also classifies “ adhesive product lines ” where all the products within the line have the same chemical composition except
for a different amount of catalyst.
This document only specifies the performance of adhesives for use in an environment
corresponding to the defined conditions.
The performance requirements of this document are applicable to the adhesives only,
not to the manufactured timber products. This document does not cover the performance
of adhesives for on-site gluing (except for factory-like conditions) or the production
of wood-based panels, except solid wood panels, or modified and stabilized wood with
considerably reduced swelling and shrinkage properties, e.g. acetylated wood, heat
treated wood and polymer impregnated wood.
This document is primarily intended for use by adhesive manufacturers and for use
in timber products bonded with adhesives, to assess or control the quality of adhesives.
The requirements are applicable to the type testing of the adhesives. Production control
activities are outside the scope of this document.
Adhesives meeting the requirements of this document are adequate for use in load-bearing
timber products, provided that the bonding process has been carried o...
BS EN 15425:2023 Referenced Document
EN 13183-2 Moisture content of a piece of sawn timber - Part 2: Estimation by electrical resistance method
EN 13183-3 Moisture content of a piece of sawn timber - Part 3: Estimation by capacitance method
EN 14080 Timber structures - Glued laminated timber and glued solid timber - Requirements
EN 15416-1 Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 1: Longterm tension load test perpendicular to the bond line at varying climate conditions with specimens perpendicular to the glue line (Glass house t
EN 15416-3 Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in bending shear
EN 15416-4 Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 4: Determination of open assembly time under referenced conditions
EN 15416-5 Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 5: Determination of minimum pressing time under referenced conditions
EN 302-1 Adhesives for load-bearing timber structures - Test methods - Part 1: Determination of longitudinal tensile shear strength
EN 302-2 Adhesives for load-bearing timber structures - Test methods - Part 2: Determination of resistance to delamination
EN 302-3 Adhesives for load-bearing timber structures - Test methods - Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength
EN 302-4 Adhesives for load-bearing timber structures - Test methods - Part 4: Determination of the effects of wood shrinkage on the shear strength
EN 302-8 Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of multiple bond line specimens in compression shear*, 2023-04-26 Update
EN ISO 2555 Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of apparent viscosity using a single cylinder type rotational viscometer method
BS EN 15425:2023 history
2023BS EN 15425:2023 Adhesives. One component polyurethane (PUR) for load-bearing timber structures. Classification and performance requirements
2017BS EN 15425:2017 Adhesives. One component polyurethane (PUR) for load-bearing timber structures. Classification and performance requirements
2008BS EN 15425:2008 Adhesives - One component polyurethane for load bearing timber structures - Classification and performance requirements