ESD floor maintenance: cleaning, stripping and dissipative coating without losing conductivity
An ESD floor stays dissipative only if no insulating layer forms between shoe sole and floor surface. To achieve this, it is stripped, neutralised to pH 7, coated with a dissipative finish in medium coats and cleaned only with a pH-neutral ESD cleaner. Resistance to ground per IEC 61340-4-1 and body voltage then confirm the result.
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Why does an ESD floor lose its dissipative properties with ordinary cleaning?
Household and industrial cleaners leave surfactants, soaps or care polymers that dry into a high-resistance film. Waxes and gloss emulsions without conductive additives have the same effect. The film sits exactly where charge should pass from the shoe sole into the floor, and it raises the contact resistance considerably, even though the floor covering itself is undamaged.
A dissipative floor reduces charge separation when people walk and provides a path to ground. Both depend on the top layer, only micrometres thick; grit and abraded particles worked into it degrade the contact further.
What does a complete maintenance cycle look like?
The cycle has five stages: stripping, neutralising, applying a dissipative finish, routine cleaning and burnishing. The first three are a restoration, needed once or twice a year depending on traffic. The last two run continuously and determine how long the finish stays within limits.
1. Deep cleaning and stripping
The stripper solution is spread evenly and left to work for a few minutes without drying. The floor is then scrubbed at low speed with a green or black pad and the slurry picked up with a wet vacuum. Glossy patches indicate remnants of the old finish.
2. Neutralising
Strippers are alkaline; residue left in the floor stops the new finish from curing fully. Rinse with neutraliser, or several times with warm clean water, until the floor shows pH 7 on indicator paper.
3. Applying the dissipative finish
Apply the finish in a figure-of-eight motion with a clean mop reserved for this purpose. Two coats are usual, freshly stripped new tiles need three because of higher porosity. Allow about one hour per coat at room temperature, without fans or forced air.
4. Routine cleaning
Dust daily with an untreated dust mop. Damp mop only with a pH-neutral ESD cleaner and a well-wrung mop, never leaving puddles: about weekly in heavy traffic, two or three times a month in light traffic.
5. Burnishing and restoring
A dissipative restorer or spray buff is applied thinly and burnished with a white or beige pad, restoring gloss and surface values. Start no earlier than seven days after coating.
ESD cleaners and floor careCare products that dry with little residue and keep the floor dissipative.
View productsWhich maintenance errors cost dissipative performance?
Most failures do not originate in the floor covering but in the procedure: wrong chemicals, unsuitable pads, incomplete rinsing and insufficient drying time. They show up as rising resistance, streaks or white, powdery spots, often only weeks after maintenance and then across large areas of the floor.
- Excessive build-up: years of recoating without stripping thicken the film and trap dirt; do not exceed about four to six coats.
- Over-wrung mop: very thin coats adhere poorly, powder and do not form a continuous film.
- Over-aggressive pads: black and brown for stripping, red or green for routine scrubbing, white or beige for burnishing.
- Residues: leftover stripper, overdosed cleaner or neutraliser that was not picked up soften the finish or leave a haze.
Drying time and humidity
A touch-dry finish is not yet ready for use: light foot traffic after about six hours, normal operation after twelve, wet cleaning, burnishing and pallet trucks only after 72 hours. High humidity and low temperature extend all times.
How do you test the floor after maintenance?
Once the finish has cured, measure resistance to ground per IEC 61340-4-1 at several points, including walkways. For a dissipative EPA floor, IEC 61340-5-1 sets a limit below 109 Ω. The walking test per IEC 61340-4-5 additionally shows whether people wearing ESD footwear stay below 100 V body voltage.
Test after every restoration and regularly during routine care, and compare with the baseline taken beforehand. If resistance rises faster in walkways than along the edges, the finish there is worn or soiled.
- Measure only once the surface is dry and cured; damp floors give misleadingly good values.
- Document fixed test points: walkways, workstations, edges.
- Record humidity and temperature, since both affect the readings.
- Test body voltage with the footwear actually worn.
Which method fits which purpose is explained in Point-to-point or resistance to ground; the walking test is described in Measuring body voltage.
Which faults occur and how do you fix them?
Almost every floor care problem can be traced to a typical fault pattern. The order of remedies matters: start with the gentle measure such as intensive cleaning or burnishing, and only if the readings do not recover, strip and rebuild the finish completely. The table summarises the most common cases.
| Fault | Typical cause | Remedy |
|---|---|---|
| Resistance rises after cleaning | Alkaline or high-residue cleaner, wax | Clean intensively with ESD cleaner, otherwise strip and recoat |
| White marks, powdering | Wet cleaning before 72 h, standing water, coats too thin | Strip, neutralise and recoat the area |
| Streaks, dull gloss | Recoated too early, dirty mop, too few coats | Scrub, rinse, recoat in medium coats |
| Discolouration, trapped dirt | Stripper residue, grit from outside, new mops not pre-washed | Scrub intensively and recoat, otherwise strip; entrance matting |
| Scratches and wear in walkways | Over-aggressive pads, grit, too little burnishing | Correct pads, burnish walkways more often |
| High body voltage despite good floor value | Unsuitable or soiled footwear, only one ESD shoe | Check footwear, wear ESD shoes on both feet |
ESD shoesWithout suitable footwear, even a well-maintained floor cannot ground people.
Read the guideFrequently asked questions
Can an ESD floor be mopped with ordinary floor cleaner?
No. Ordinary cleaners leave surfactants or care polymers that form an insulating film. On dissipative floors and finishes, use only pH-neutral ESD cleaners that dry with little residue. Use other products only if the floor manufacturer explicitly approves them.
How often does a dissipative finish need renewing?
With regular routine cleaning and burnishing, stripping and recoating once or twice a year is usually sufficient. Heavy-traffic areas need more frequent restoring. The readings decide: if resistance to ground rises despite cleaning, the finish is worn out.
When can a freshly coated floor be used again?
Light foot traffic is possible after about six hours and normal operation after twelve hours. Wait 72 hours before wet cleaning, burnishing or driving pallet trucks over it, because the finish has not fully cured until then.
Does a coating turn an ordinary floor into an ESD floor?
A dissipative finish can make hard, non-dissipative floors suitable for ESD use if the substrate is clean, dense and, for concrete, sealed. The area must then be tested and maintained like any ESD floor. A permanently dissipative floor covering needs less maintenance.
Looking for suitable care products for your ESD floor?
ESD cleaners, strippers, neutralisers and dissipative floor finishes are grouped in the ESD cleaners and floor care category.
Standards-based
Testing per IEC 61340-4-1, limits per IEC 61340-5-1.
Measurable
Resistance to ground and body voltage as evidence.
Practical
Maintenance cycle with drying times and fault patterns.
Selection help
We help you choose the right products; technical details are clarified with the manufacturer.