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The N Mark as a recognised quality logo

The N Mark as a recognised quality logo

The N mark makes things easier

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The AENOR Mark is a voluntary mark of quality recognised by the administration in multiple sets of legislation, such as the Technical Building Code (CTE) or the Code on Structural Concrete (EHE-08).

​​​​​​​​​​​​​​​The AENOR Mark offers a particularly valuable guarantee to the customer, and, in the case of certain cements not covered by the CE mark, an alternative to regulatory-type approval.

​The AENOR Mark guarantees conformity with public and private requirements, and helps to demonstrate compliance with the limits specified in legislation and bidding conditions.

AENOR considers the limits established in main areas of legislation in its certification regulations. This allows is to build trust among N mark product users, and, where relevant, facilitate the verification of conformity with regulations and on-site reception.

The Code on Structural Concrete EHE-08 establishes a set of technical specifications that products and execution processes must meet in their fields.

On a voluntary basis, these products can have quality marks that prove their conformity with standards, regulatory provisions and specific regulations of the corresponding mark issuing bodies.

The AENOR Mark is recognised by the Ministry of Public Works and Transport as an officially recognised logo of the EHE-08 for certain building materialsincluding:

Products with officially recognised logos have a higher guaranteed quality level than required by EHE-08 due to rigorous product controls in the factory, external verification and testing in independent laboratories accredited by ENAC in accordance with the standard EN ISO 17025, as well as audits and inspections of the company's facilities, raw materials and quality system. The entities that issue these certificates are accredited by ENAC in accordance with standard EN ISO/IEC 17065 and endorsed by the Public Administration responsible for official recognition (RD 1247/2008, which approves the EHE-08).

The certificate of conformity with standards established by the AENOR Mark is recognised by the Ministry of Industry, Trade and Tourism for various fire protection products..

Royal Decree 513/2017, which approves the Regulation on Fire-Protection Installations, establishes that compliance with the requirements laid out for devices, equipment systems or their components must be justified, when requested, through third-party certification that allows for the placement of the corresponding marks, such as the AENOR Mark. Companies that issue these certificates are accredited by ENAC, in compliance with standard EN ISO/IEC 17065.


The AENOR Mark for cements:

  • is an Officially Recognised Logo in accordance with the Code for the Reception of Cements (RC-16) of the Ministry of Public Works and Transport

  • includes the requirements set out in the ​​​​Structural Concrete Instruction (EHE-08)

  • includes the requirements regarding water-soluble chromium content (VI) of Presidential Order PRE/1954/2004, which implements Directive 2003/53/EC.

  • is declared by the Ministry of Industry as an alternative to regulatory approval, in accordance with Royal Decree 1313/1988, which declares the approval of cements for manufacturing concrete and mortars compulsory for all kinds of works and pre-manufactured products, for all cements not covered by the CE mark, in accordance with the European Construction Products Regulation

Companies that issue these certificates are accredited by ENAC in accordance with standard EN ISO/IEC 17065, and endorsed by the Public Administration responsible for official recognition.

Royal Decree 358/1985, of 23rd January, which establishes the compliance with technical standards of sanitary taps and fittings for use in personal hygiene facilities, kitchens and laundry areas, and their certification by the Ministry of Industry and Energy, stipulates the mandatory compliance of sanitary taps and fittings with the technical standards.

The certificate of conformity with standards established by the AENOR Mark for taps and fittings has the same value as approval, serving as an alternative recognised by the Ministry of Industry Energy and Tourism.

Companies that issue these certificates are accredited by ENAC in accordance with standard EN ISO/IEC 17065, and endorsed by the Public Administration responsible for official recognition.