Flooring for Work Areas – Server Rooms
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Solutions & Applications · Workplaces
A conductive floor is not a product — it is a circuit. Electrostatic discharge damages sensitive electronic equipment, and protection does not come from the roll of flooring ordered, but from the path the charge will follow to the building’s earth connection.
The conductive flooring system comprises four components
The requirement for a dissipative or conductive floor appears in every server room specification. What is usually missing is the fact that the floor, on its own, does nothing:
- Conductive or dissipative coating: the flooring itself, where specifically mentioned — not the commercial version of the same range. LINOLEUM CONDUCTIVE xf² specifies a constant conductivity of R ≤ 10⁶ Ω.
- Conductive adhesive: a standard adhesive isolates the floor from the substrate and disrupts the load path.
- Copper strips: these are laid in a mesh pattern within the adhesive and distribute the load across the entire surface.
- Connection to the building’s earth system: the mesh terminates at an earth point — otherwise the load has nowhere to go.
- Resistance measurement after installation: performance is confirmed on site by a test report, not by the product leaflet.
A conductive floor bonded with standard adhesive and without a connection to earth is not a conductive floor — it is simply an expensive floor. This is the most common error in this category and goes unnoticed, because the floor appears to be correct and the failure only becomes apparent later as unexplained equipment faults.
Please also note the distinction in the references: of the collections recommended for workplaces, only LINOLEUM CONDUCTIVE xf² possesses this property. The LVT ranges are suitable for ancillary areas — control rooms, corridors, offices — not for equipment rooms, unless a conductive variant is specifically ordered and confirmed in the technical data sheet.
The coating: what does ‘conductive’ mean?
The conductivity of a floor is expressed as electrical resistance to earth: the lower the resistance, the faster the charge is dissipated. The distinction between a conductive and a dissipative floor lies precisely in this value, and is defined by the design or by the equipment manufacturer.
LINOLEUM CONDUCTIVE xf² delivers a consistent conductivity performance of R ≤ 10⁶ Ω and is intended for server and computer rooms, laboratories and areas surrounding electronic equipment. It is manufactured in Italy from up to 97 per cent natural raw materials, with a marble pattern and xf² surface protection for durability and chemical resistance — meaning that conductivity does not come at the expense of maintenance or environmental performance.
The word ‘stable’ is essential: conductivity must be maintained throughout the product’s service life, regardless of the relative humidity of the environment. Floors that rely on surface treatment for their performance lose this performance through cleaning and the passage of time.
The second load: point load
A fully equipped rack transfers its weight to four small support points or castors. The pressure per square centimetre is disproportionate to anything encountered on a building floor, and is exerted continuously, at the same point, for years.
The substrate must be able to withstand this load without deformation. CERESIT DH Maxi is a self-levelling compound with a thickness of 3 to 30 mm, designed for very heavy loads and professional use, with a particularly smooth finish and high strength. It can be applied to concrete, cement screeds and aerated concrete with a strength of at least C12, and — following appropriate preparation — to anhydrite, terrazzo and ceramic tiles.
This primer is CERESIT R 766, a high-concentration primer for porous and non-porous surfaces: concrete, mortar, stone, timber, as well as ceramic tiles or epoxy coatings. When refurbishing an existing space — which is the norm in server rooms — the substrate is almost always non-absorbent, and without a primer, the self-levelling compound will not adhere.
| Stage | Material | Key point |
|---|---|---|
| Priming | CERESIT R 766 | Mandatory for tiles, epoxy coatings and any non-absorbent surface |
| Levelling & strength | CERESIT DH Maxi 3–30 mm | Sub-base with a strength of at least C12 |
| Welding | Conductive adhesive | Not to be replaced by standard floor adhesive |
| Earthing | Copper strips on mesh | Connection to a building’s earth electrode |
| Receipt | Resistance measurement | On-site inspection report, following installation |
The roof: this is where the noise stays inside
The server room is one of the noisiest areas in an office building — the cooling system runs continuously. The acoustic requirement here is the opposite of that in an office: we do not require sound absorption for comfort; rather, we require sound attenuation towards neighbouring spaces, so that the noise from the plant room does not reach the offices.
| Slab | Surface | Performance |
|---|---|---|
| AMF THERMATEX® Feinstratos 15 mm | Micro-ground · 4 edge types | Sound insulation 34 dB · A2-s1,d0 · light reflectance 85 per cent |
| Armstrong SAHARA 15 mm | Micro-perforated fine-grained · Board, Tegular 24, Tegular 15 | αw 0.60 / NRC 0.55 · sound insulation 34 dB · A2-s1,d0 · light reflectance 85 per cent |
Both are made from certified biodegradable mineral fibre with Eurofins Indoor Air Comfort® GOLD and an EPD. The difference between them lies in the balance: Feinstratos provides pure sound absorption with a closed, micro-textured surface; SAHARA adds measured absorption, making it better suited to spaces that combine equipment and workstations — such as a control room or NOC.
The A2-s1,d0 classification is not a standard requirement in a space full of electrical equipment: it limits the contribution to the fire and, crucially, the production of smoke.
Design series
- Definition of an ESD requirement: dissipative or conductive, with the resistance value specified in the design or by the equipment manufacturer.
- Inspection of the existing substrate: what is present, how level it is, and whether it is absorbent.
- Calculation of point loads: based on the arrangement of the racks, not on the floor area.
- Design of the earthing mesh: strip routing and connection points, prior to installation.
- Acoustic objective: sound attenuation towards adjacent spaces — and sound absorption only where workstations are located.
- Acceptance protocol: resistance measurement and documentation.
Conductive Flooring for Equipment Rooms
Flooring for Workplace Environments
Substrate Preparation
Suspended Ceilings for Technical Areas
The conductive floor will be connected to the earth — and who will measure it?
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