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WTI can advise on joinery requirements in relation to testing and test results. In relation to timber durability WTI can advise on the natural durability of the timber species used and on preservative treatment recommendations.

There are three basic test requirements;

1. EN 1026 for Air permeability
2. EN 1027 for Water tightness and
3. EN 12211 for Resistance to wind loads

Classification of the joinery test performances is given by;

1. EN 12207 for Air permeability
2. EN 12208 for Water tightness and
3. EN 12210 for Resistance to wind loads

EN 14351-1 “Windows and doors – Product standard, performance characteristics - Part 1: Windows and external pedestrian doorsets without resistance to fire and/or smoke leakage characteristics” is the appropriate harmonised standard for joinery and covers hardware as well as the performance requirements mentioned above.

BS 6375-1 “Performance of windows and doors” is the UK national application document for EN 14351 and gives guidance for specifying the performance requirements for joinery. Ireland does not have an equivalent standard and it is likely that the British Standard will by default be used to specify joinery performance.

The designer should specify the performance requirements with the wind loads calculated to EN 1991-1-4 “Eurocode 1: Actions on structures – Part 1-4: General actions – Wind actions”.

More information is given in our Timber Information Sheets.