JM Plumbing Services logoJM Plumbing Services
+44 7850 200897Get a Free Quote

Non Slip Bathroom Flooring: PTV 36 Still Needs Proper Falls

Choose non slip bathroom flooring by checking wet PTV 36 or higher or DIN 51097 Class B or C, then verify the surface, tile format, and drainage falls.

Non Slip Bathroom Flooring: PTV 36 Still Needs Proper Falls

Textured porcelain tiles slope toward shower drain

Choose textured porcelain, small-format mosaics, safety vinyl or LVT, or resin flooring, and ask for a wet PTV of 36 or higher or a DIN 51097 Class B or C rating for barefoot wet areas. Those four material types consistently perform well when tested wet and barefoot, which is the condition that matters in a bathroom. Finish, tile format, and correct drainage falls affect the result just as much as the material itself, so a good spec sheet alone will not guarantee a dry grip.

TL;DR:

  • Request wet PTV results or DIN 51097 barefoot classes; ignore R ratings as primary evidence because they test shod feet on oil covered ramps.
  • Choose matt or structured porcelain, mosaics, resin, or tested safety vinyl; avoid polished finishes and smooth decorative LVT in wet areas.
  • For shower slopes, specify PTV 38 or higher and a drainage fall of 1:60 where practical; 1:80 is the stated minimum.
  • In homes with children or older adults, choose warmer safety vinyl or LVT for comfort, but pair the floor with mats and grab rails.
  • Treat existing slippery floors or add adhesive strips, but replace glazed, cracked, or previously treated tiles for a safer long term fix.
Jmplumbingservicesltd
Plan a Safer Bathroom Floor
JM Plumbing Services Ltd handles bathroom installations and renovations across Cardiff and the Vale of Glamorgan, with attention to practical details.
Explore bathroom services

Table of Contents

Material guide: what works and why

Not every tile or plank marketed as “anti-slip” performs the same way once it gets wet and bare feet are involved. The material matters, but so does the finish and the data behind it.

  • Textured porcelain or ceramic: pick matt or structured surfaces, and ask the supplier for wet PTV or DIN 51097 data rather than taking “non-slip” on the box at face value.
  • Vinyl and LVT: safety-textured ranges with published PTV figures combine grip with easier upkeep and a warmer feel underfoot than tile.
  • Rubber and resin: these seamless finishes often reach high wet PTV values and suit wet rooms and accessible bathrooms where joints and thresholds are a liability.
  • Mosaic and small-format tile: the extra grout lines add real texture, which is why small tiles are a common choice for shower floors specifically.

Polished or gloss finishes should be avoided on any bathroom floor regardless of material, since the surface that looks best dry is usually the one that turns dangerous wet. Vinyl plank in a bathroom has a particular trade-off worth naming directly: it handles moisture well, installs with few joints, and feels comfortable underfoot, but only the safety-textured ranges with tested PTV data deliver real grip, while smooth decorative LVT designed for living rooms does not belong in a wet area. Resin flooring costs more to install but removes grout lines entirely, which also helps with cleaning in a family bathroom that sees heavy use. Mosaic tiles work particularly well on shower floors with a fall built in, since the tighter grout pattern follows the slope without large cut pieces.

How slip resistance is measured, and the targets to insist on

Suppliers throw around a lot of numbers, but only a few are useful for a bathroom floor. Knowing which test applies to your situation saves you from a tile that looks right on paper and feels wrong the first time it gets wet.

  • R ratings (DIN 51130): this test uses a shod foot on an oil-covered ramp, which was designed for industrial and commercial floors, not bare feet in a shower. Trade guidance notes that R ratings don’t reliably reflect barefoot, wet bathroom conditions, so treat them as a secondary indicator at best.
  • DIN 51097 barefoot classes (A, B, C): this is the barefoot, wet test that actually matters for bathrooms. Class A suits light domestic exposure, Class B suits a standard bathroom floor, and Class C is the benchmark for wet room and shower floors.
  • Pendulum Test Value (PTV): this is the HSE and UKSRG’s preferred method for wet slip assessment.

A wet PTV of 36 or above is the recognized benchmark for “low slip potential” on level wet areas, according to pendulum test specification guidance, and sloped shower zones need an even higher figure to compensate for the gradient. When you’re comparing products, ask the supplier directly for wet PTV or DIN 51097 results rather than accepting a generic “slip-resistant” label on the product page.

Choosing by room and who uses it

The right floor for a downstairs cloakroom is not the right floor for a family bathroom used by toddlers and grandparents alike. Matching the spec to the room and the people using it is the part most guides skip.

  1. Cloakroom or downstairs WC: matt porcelain or a safety vinyl is usually sufficient here, since exposure to standing water is lower than in a bathing area.
  2. Family bathroom: aim for textured porcelain or safety LVT with a PTV of 36 or higher wet. Trade practice commonly points to R10 or above for a standard bathroom, with R11 reserved for wet rooms.
  3. Wet rooms and walk-in showers: target DIN 51097 Class B or C or a PTV of 36 and above, rising to 38 or more on any sloped section. Mosaics, resin, and textured porcelain are the materials that tend to hit these numbers reliably.
  4. Homes with children or older adults: build in a wider safety margin on the flooring spec and pair it with grab rails and quality mats rather than relying on the floor alone. Our wet room conversions for elderly residents go through this balance in more detail.

Installation details that make or break the rating

A tile tested at PTV 40 in a lab can still be dangerous in your bathroom if it’s installed badly. The rating describes the material, not the finished floor, and several installation choices decide which one you actually get.

  • Tile format and grout frequency: more grout lines mean more texture, so large-format tiles need genuine surface texture to hit the same PTV figures that mosaics achieve partly through grout.
  • Falls to drain: wet room floors need a fall to prevent ponding, with 1:80 as an absolute minimum and 1:60 as the preferred practical fall. Standing water ruins even a high-PTV floor’s real-world performance.
  • Drain layout: linear drains along a wall and central point drains both work, but the tile cuts and fall direction around them affect where water actually sits.
  • Underfloor heating: it helps a floor dry faster between uses, but it does nothing to improve slip resistance and should never be treated as a substitute for the right spec.

Pro Tip: Ask your installer to confirm the finished fall with a spirit level and a bucket of water before grouting, not just from the plan.

A flat substrate, the correct adhesive for the material, and following the tile manufacturer’s own fixing specification all matter just as much as the fall itself. Our guide to the 1:40 rule for wet room floor slope covers when this kind of work suits a confident DIYer and when it needs a professional.

Fixing a slippery floor without ripping it out

Full replacement is not always necessary or affordable, and there are genuine options for an existing floor that has become a hazard.

  • Anti-slip chemical treatments: these etch the tile surface to add microtexture, but suitability varies by tile material and the effect typically fades over time, so check compatibility before applying one.
  • Adhesive strips: targeted strips at the shower or bath step-out point address the single highest-risk spot without touching the rest of the floor.
  • Non-floor measures: a quality mat like the RIDDER non-slip shower mat, a securely fixed grab rail, and better extraction to clear condensation all reduce risk immediately.
  • When to replace instead: if the existing tile is glazed, cracked, or already failed a treatment once, retiling with a properly rated material is the safer long-term route rather than repeating a short-lived fix.

How we set up a safe bathroom floor

When we spec a bathroom floor, we start with the same checklist on every job: confirm the wet PTV or DIN 51097 data for the proposed material, check the substrate for level and moisture, set the fall before a single tile goes down, and choose a tile format and grout profile that will still grip once it’s wet.

  • Verify PTV or DIN 51097 figures with the manufacturer rather than relying on marketing copy.
  • Check the substrate and plan the fall to drain before fixing begins.
  • Match tile format and grout width to the room’s realistic water exposure.
  • Map pipe routes and level-access needs early, especially on wet room and accessible bathroom conversions.

We favor resin, small-format porcelain, and textured safety vinyl for wet rooms and accessible bathrooms, since these consistently meet the higher PTV targets that slope and barefoot use demand.

What different non-slip flooring options cost

Budget is often the deciding factor once the safety spec is settled, and the materials above sit at different price points for reasons beyond just the tile itself.

Textured porcelain and ceramic tiles sit in the mid-range bracket for most bathroom jobs, with the final cost shaped by tile size, wastage on cuts around fittings, and how much grout work the format requires. Safety vinyl and LVT tend to come in lower than tile for materials and labor combined, since there’s no grouting stage and fitting is faster, which is part of why it’s a popular choice for rental properties and quick refreshes. Resin flooring sits at the top of the range because it’s a specialist, seamless application rather than a product you fit yourself, but it removes grout lines and thresholds that would otherwise need separate waterproofing. Mosaic and small-format tile cost more per square meter in labor than large-format tile, since more individual pieces and more grout joints take longer to lay, even though the material cost per tile is often lower. A full renovation that includes new flooring, tiling, and waterproofing typically runs from £2,500 to £4,000 as a complete project rather than a flooring line item alone. Whatever material you choose, factor in the cost of getting the fall and substrate right, since a cheap floor laid without proper drainage often needs redoing sooner than a well-installed mid-range one.

Relative costs of three non slip flooring options

How long non-slip bathroom flooring actually lasts

Durability depends on the material and, just as much, on how it’s maintained day to day. Porcelain tile is the longest-lasting option of the group, often outliving the bathroom’s other fittings when properly installed and grouted, though the grout itself needs periodic resealing to keep its texture and hygiene intact. Safety vinyl and LVT have a shorter working life than tile, particularly in high-moisture areas, since the wear layer that holds the textured grip can thin out faster under heavy daily use. Resin flooring holds its seamless surface well over time because there are no joints to fail, but a damaged section is harder to patch invisibly than a single replaced tile. Mosaic tile’s many grout lines mean more long-term maintenance than large-format tile, since grout is the part most likely to discolor or wear smooth first. Across all materials, the single biggest factor in how long the slip resistance itself lasts is cleaning: residue, limescale, and the wrong cleaning products wear down the texture that gives a floor its grip, according to trade guidance on bathroom floor maintenance. A floor that’s rated well on day one can lose that rating years before it physically wears out if it’s cleaned with the wrong products.

Matching the floor to who actually uses the bathroom

The best non-slip floor on paper isn’t always the right one for the household using it, and the honest way to choose is to start with the people, not the product. For a bathroom used mainly by young children, prioritize a warmer, softer-feeling material like safety vinyl or LVT, since falls on a cold tile floor are harder on small bodies, and pair it with a mat at the bath edge where splashing is heaviest. For older adults or anyone with limited mobility, the floor should be treated as one part of a wider safety plan, with DIN 51097 Class C or a PTV well above 36 as the baseline, plus grab rails and a level-access shower rather than a step. Frequent bathers, including households where several people shower daily, put more cumulative wear on grout and sealant than a lightly used guest bathroom, so resin or a well-sealed porcelain will outlast vinyl under that kind of pressure. If the household includes a mix of ages and mobility levels, which is common in family homes, it’s worth specifying to the higher standard in the room rather than the average, since the margin costs little extra at installation but matters a great deal to the person who needs it most.

Matching the floor to who actually uses the bathroom — overview diagram

Balancing safety, looks, and budget

My own rule when weighing options is simple: settle the PTV or DIN figure first, then choose the finish and layout within that constraint, rather than falling for a tile first and checking the rating later. Large-format tile that just misses the target isn’t worth the look. Retrofitting a mat or grab rail is a sensible DIY job, but wet room falls and drainage are worth hiring a specialist for, and that’s exactly where we come in.

— James

How we can help with your bathroom flooring

We handle bathroom renovation, tiling, and LVT and vinyl flooring services, including full wet room conversions where falls and drainage need to be right the first time.

Jmplumbingservicesltd

  • A site survey checks your substrate, falls, and existing drainage before we quote.
  • We confirm the PTV or DIN rating for any flooring we recommend, in writing.
  • Fixed pricing means no showroom markup or upselling once the job starts.

A full renovation including flooring typically runs £2,500 to £4,000, and we back every job with the same attention whether it’s a full remodel or a single floor replacement. Get in touch to arrange a survey for your bathroom renovation and see what a properly specified floor costs for your space.

FAQ

What are non-slip floor tiles?

Non-slip floor tiles are tiles with a textured or matt surface finish tested to resist slipping when wet, typically measured by wet PTV or DIN 51097 barefoot ratings rather than appearance alone. Porcelain and ceramic are the most common materials, with small-format and mosaic tiles often performing best in wet rooms because of their extra grout lines.

Can you install vinyl flooring over concrete?

Yes, vinyl and LVT can be laid over a concrete subfloor as long as the surface is flat, dry, and properly prepared with the adhesive or underlay the manufacturer specifies. Moisture testing the concrete beforehand matters in a bathroom specifically, since trapped damp beneath the vinyl can affect both the adhesive bond and long-term durability.

How long does vinyl flooring last?

Safety vinyl and LVT in a bathroom generally have a shorter working life than porcelain tile, particularly in areas with heavy daily moisture exposure, since the textured wear layer that provides grip can thin faster under constant use. Regular cleaning with the right products and avoiding abrasive tools helps preserve both its appearance and its slip resistance for longer.

What is a good slip resistance rating for a bathroom?

For a standard bathroom, trade guidance points to an R10 rating or a DIN 51097 Class B, while wet rooms and shower floors should aim higher, at R11 or Class C. The most reliable single figure to request from a supplier is a wet PTV of 36 or above, since this reflects barefoot, wet conditions directly.

Sources

Ready to get this sorted?

Get a free, fixed-price quote and we'll take it from here.

Get a Free QuoteCall Now