techniqueTechnical and Maintenance


Requirements for rooms to be installed with access floors


Photo of a raised floor in a data center, including special frames for heavy loads.




Coverings to be used :

Suitability of coverings :

Factory bonded coverings :

Floor coverings with a foam backing must be excluded.

Free Laid coverings :

It concerns carpet tiles, free laid on site. Their dimensions, squareness, stability and installation must be conform to the requirements of the Standard NFP 62.202.1 ( reference DTU 53.1 ).

The use of permanent adhesive between the raised floor and the carpet tiles must not make dismantling of the raised floor panels difficult. It is recommended not to aline carpets tiles and raised floor panels.


StopA majority of coverings can be used on our panels.

However, all products are not necessarily compatible with the use of raised floors. Rigorous testing must be done before accepting a none validated covering.

Do not hesitate to contact us, we have colour-charts available for approved suppliers and references.



dalleExcessive use of liquid products must be avoided!

The use of water can provoke swelling, oxidizing or destruction of the components of the panels.
Cleaning products can dammage the adhesives on the edges and corners. Even small quantities of a product can laminate the covering.

Every covering has a data sheet for maintenance.



Electrostatic properties

The ability of a covering to accumulate electrostatic loads, and its ability to eliminate these loads are essential for the antistatic properties of an access floor. The measurement of the transversal resistivity ( Ret ) enables the estimation of the ability to eliminate electrostatic loads..

electricCoverings are classed according to NF P 62.001 ( Resilient floor coverings - Electrostatic behaviour ) :

All raised floors must have a transversal resistivity between 5.10 5 and 2.1012 ohms.

The equipotential connection is made by a copper strap network connecting certain pedestals to each other. This network is earthed by the companies in charge of the electrical wiring.


Fire protection


The regulations for access flooring refer to :

- The reaction to fire

- The partitioning of the plenum.

- The calorific potential.

They vary according to the use of the rooms and the classification of the building inside which the access floors are installed.


In France, the Decree dated June 30 th, 1983 defines 5 classes for the materials : M0, M1, M2, M3, M4.

The test method used is the radiation test. The tested side is the bottom of the panel.

The classification of the superior part of the panel is the same as for the covering.


Partitioning of the plenum :

When required by regulation, plenum dividers made of non combustible materials can be supplied. Every partitioned area has a maximum surface of 300m² and a maximum length of 30 meters. In case of fire, the partitioning limits the air circulation inside the plenum.



Acoustic insulation

When tested according to Standard EN ISO 140-12, our access floors can reach airborne sound insulation values from 44 to 54 dbA.

The insulation to impact sound depends mainly on the type of coverings bonded on the panels. The textile coverings are the most efficient.