Benefits and regulations

Ask for the best glass and check hENs standards.

Harmonised European Norms

All products manufactured in Europe, including double glazed units, must now comply with the harmonised European Norms (hENs), to ensure European wide technical standards are met. Windows marked with the CE logo are hEN compliant and it is important to check this before purchasing replacement windows. hENs apply to basic float glass, coated glass, toughened glass, laminated glass and energy efficient glass.

Although applying the CE mark is not compulsory in the UK, compliance with hENs standards is. The CE logo is proof of compliance with hENs.

List of hENs standards

BS EN 1096 – covers coated glass (what about EN 673?)
BS EN 1863 – covers heat strengthened soda lime silicate glass
BS EN 12150 – covers thermally toughened soda lime silicate safety glass
BS EN 14449 – covers laminated glass and laminated safety glass
BS EN 1279 – covers insulating glass units

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