BS EN 1279-4:2002

BS EN 1279-4:2002 is the product standard for insulating glass units, which defines insulating glass units, and ensures by means of an adequate evaluation of conformity to this standard that over time:

• energy savings are made because the U-value and solar factor do not change significantly
• health is preserved because sound reduction and vision do not change significantly
• safety is provided because mechanical resistance does not change significantly.

It covers additional characteristics that are of importance for trade. Marking conditions are included.

The main intended uses of the insulating glass units are installations in buildings and constructions such as in windows, doors, curtain walling, roofs and partitions where there exists protection against direct ultraviolet radiation at the edges.

Contents include:

• terms, definitions and symbols
• requirements
• test methods
• test report
• test specimens for adhesion test
• requirement for edge seal strength comparisons in case of substituting sealant
• method of moisture vapour transmission rate measurement
• adhesion on coatings and interlayer adhesion of coatings
• informative tests
• example of a sun simulating radiation source.