Cleaning and Slip Risk: Can the Wrong Cleaning Make Floors More Slippery?

Yes. The wrong cleaning product, method or frequency can leave a floor more slippery than before it was cleaned, even though it looks spotless. Cleaning removes dirt, but it does not automatically restore or protect a floor’s slip resistance, and in some cases it actively reduces
it.

The reader’s reality
If you manage facilities across hospitality sites, cleaning is probably one of the first things you point to when someone asks about slip prevention. More cleaning, stricter schedules, better trained staff. It feels like the obvious answer. But cleaning and slip risk don’t always move in the direction you’d expect. A floor can be cleaned thoroughly, look perfect, and still carry a higher slip risk than it did before. This
article looks at why that happens, what to check for, and what a genuinely safer routine looks like.

Why does cleaning sometimes increase slip risk?
Cleaning is designed to remove dirt, grease and visible mess. It is not designed, by default, to protect or improve a floor’s grip. Those are two different jobs, and a product that does the first job brilliantly can quietly undermine the second. Some cleaning products leave a thin film behind once they dry. That film can look like a clean, shiny finish, which is often exactly what it’s marketed to do. But that same film can sit
on top of the floor’s texture and reduce the contact between footwear and surface, which is where slip resistance actually comes from. The floor looks cleaner. It performs worse. This is why cleaning and slip risk need to be thought about as two separate questions, not one. “Is the floor clean” and “is the floor safe to walk on” can have different answers, even on the same floor, on the same day. A facilities manager who only ever asks the first question has no way of knowing the answer to the second.

What does CHIMES tell us about cleaning and slip risk?
We use a framework called CHIMES to break down what actually drives slip risk on any floor. Two of the six factors sit right at the centre of this issue.

• Contamination: the substances on the floor, including grease, water, food residue, and any cleaning product left behind.
• Maintenance: the products, methods and frequency used to clean and care for the floor.

Contamination and maintenance are closely linked, because the maintenance routine determines what kind of contamination is actually being removed, and what might be left behind instead. A cleaning product chosen purely for its shine or its smell can leave a contaminant of its own, even after the visible mess is gone. The other four CHIMES factors, heel, individual, environment and surface, still matter, but
they’re not where this particular risk hides. This is a maintenance problem wearing a contamination disguise.

Which cleaning mistakes create hidden slip risk?
A handful of common habits show up again and again across hospitality sites when slip risk is investigated. Most of them come from a reasonable place, someone trying to keep a busy site clean and presentable, rather than any carelessness.

• Using a general purpose cleaner on kitchen or back of house floors, when a product designed for greasy or contaminated surfaces would perform differently.
• Choosing a product based on its finish, its scent, or a preference for a particular brand, rather than its effect on slip resistance.
• Mopping with dirty water, which redistributes grease and residue across the floor rather than removing it.
• Over diluting or under diluting a cleaning product, which changes how effectively it lifts contamination from the surface.
• Sticking with the same cleaning routine after a change of flooring, footwear or supplier, without checking whether it still suits the new conditions.

None of these mistakes are obvious from a visual inspection. A floor can look properly cleaned and still be affected by any one of them, which is exactly why relying on appearance alone is such a common trap.

How do you know if your cleaning routine is helping or hurting?
The only reliable way to answer this is to measure the floor’s actual slip resistance, rather than judging it by appearance. This is done using a pendulum test, which measures how a standard test foot interacts with the floor surface under realistic wet or contaminated conditions, producing a Pendulum Test Value, or PTV.

Testing before and after a change in cleaning product or routine shows you, in numbers, whether the change has improved grip, made no real difference, or quietly made things worse. Guessing based on how shiny or clean a floor looks cannot tell you this. Organisations that move from assuming their cleaning routine works to actually measuring its effect on slip resistance typically see incident reductions of 57 percent or more, based on data from Slip Safety Services across thousands of sites.

What should a right floor, right care routine include?
The belief that clean more equals fewer slips only holds up if cleaning is paired with the right floor and the right method for that floor. On its own, more cleaning just means more opportunities to apply the wrong product more often, on a surface that may never have been
suited to the job in the first place.

A right floor, right care approach means the flooring itself has a known, tested slip resistance suited to the conditions it faces. It means the cleaning product and method are chosen because they support that slip resistance, not because they look good or clean fast. And it means the
routine gets checked periodically, rather than left unchanged for years regardless of what’s actually happening on the floor.

This also means treating cleaning staff as part of the safety picture, not just the presentation picture. The people mopping a kitchen floor at the end of a shift are often the first to notice when something feels different underfoot, a residue that won’t lift, a patch that stays greasy
no matter how it’s cleaned. Building a simple way for that observation to reach whoever manages the floor testing schedule closes a gap that most sites don’t even know exists.

What good looks like
A hospitality site that has this right treats cleaning as one part of a bigger picture, not the whole answer. The floor has a documented, tested PTV score. The cleaning product in use has been chosen with that score in mind, not selected off a supplier catalogue based on price or
scent alone. Staff are trained on why the product matters, not just how to use it.

Retesting happens after any change to flooring, footwear policy or cleaning supplier, rather than being left to chance. And when a facilities manager is asked whether their cleaning routine is actually helping, the answer comes with a number attached, not just a feeling that things seem fine.

The new belief
Cleaning more will not solve a slip risk problem on its own, and in some cases it can make things worse. The right floor, cared for with the right method, is what actually reduces slip risk. Measure the effect of your cleaning routine, don’t assume it.

Take the next step
If you’re not sure whether your current cleaning routine is protecting or reducing your floors’ grip, the Slip Risk Scorecard is a quick way to find out where you stand.

FAQ

• Can cleaning products make floors more slippery? Yes. Some cleaning products leave a thin film behind once dry, which can reduce the contact between footwear and the floor surface. A floor can look clean and shiny while its actual slip resistance has gone down.
• How do I know if my cleaning routine is affecting slip risk? The only reliable way is to test the floor’s slip resistance directly using a pendulum test, which measures grip under realistic wet or contaminated conditions. Testing before and after a change in cleaning
  product shows whether the routine is helping, doing nothing, or making things worse.
• Should I use a different cleaning product for kitchen floors than for dining areas? Often, yes. Kitchen and back of house floors typically deal with grease and heavier contamination, so a general purpose cleaner suited to a dining area may not perform the same way. Choosing a product based on the type of contamination it needs to remove is more reliable than choosing one product for the whole site.
• Does diluting a cleaning product wrong affect slip risk? Yes. Over diluting a product can leave it too weak to properly lift grease and residue, while under diluting can leave excess product behind on the surface. Both outcomes can affect how the floor performs underfoot.
• What is a PTV score and why does it relate to cleaning? PTV stands for Pendulum Test
  Value, the measurement used to assess a floor’s slip resistance. Retesting a floor’s PTV after a
  change in cleaning product or method is the clearest way to know whether that change has
  actually improved safety.

Internal link suggestions
How the pendulum test works → link to pendulum test FAQ.
Restaurant slip prevention beyond cleaning → link to restaurant slip prevention article.
Take the Slip Risk Scorecard → link to the scorecard tool.
Read Slipology → link to the book page.