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EN standardsEN

European Standards produced by the European standardisation bodies and adopted identically by national standards institutes, appearing in the UK as BS EN standards. Harmonised ENs under the Construction Products Regulation define how construction products, including roofing membranes and insulation, are tested, classified and CE marked.

Also known as: European Standards, BS EN, Euronorm

Related terms

ISO standards

ISO

Standards published by the International Organization for Standardization, the worldwide federation of national standards bodies. ISO test methods, such as the ISO 527 tensile series and ISO 14125 flexural method for composites, are widely cited on material datasheets, alongside management system standards such as ISO 9001.

Testing & standardsAerospaceAutomotiveConstructionMarineGreen energyIndustrial

ASTM standards

ASTM

Standards developed by ASTM International, a US-based standards organisation whose test methods are used worldwide, particularly in aerospace and composites, for example ASTM D3039 for tensile testing of polymer matrix composites. Datasheets often quote both ASTM and ISO methods; results are broadly comparable but not always directly interchangeable.

Testing & standardsAerospaceAutomotiveConstructionMarineGreen energyIndustrial

EN 13501

The European standard series for the fire classification of construction products and building elements. Part 1 covers reaction to fire (the Euroclass system), Part 2 covers fire resistance, and Part 5 covers the external fire performance of roofs, giving classifications such as Broof(t4).

Testing & standardsRoofing & waterproofingConstructionIndustrial

CE marking

A marking declaring that a product meets the applicable European Union legislation; for construction products it means performance has been assessed and declared against a harmonised European standard under the Construction Products Regulation. It is affixed by the manufacturer and supported by a Declaration of Performance and, where required, third-party assessment by a notified body.

Testing & standardsConstructionMarineGreen energyIndustrial

Declaration of Performance

DoP

The formal document a manufacturer must issue for a construction product covered by a harmonised European standard, declaring the product's essential characteristics and the performance values or classes it achieves. Drawing up a DoP is a legal prerequisite for CE marking under the Construction Products Regulation.

Testing & standardsConstruction

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