How to Improve Traction on Slippery Brick Floors

To improve grip on a slippery brick floor, first identify the brick and what lies beneath it. Remove grease, soap, algae, or residue with a compatible cleaner, then test a suitable traction treatment on a small area. If the floor is damaged or needs an overlay, check moisture, stability, and support before choosing materials.

Brick floors can be beautiful, but a slick patch can turn an ordinary walk into a surprise skating lesson. The safest fix depends on what made the floor slippery and whether the brick is sound. I start by separating those questions: Is something on the surface, or is the brick itself too smooth for the conditions?

Inspect Brick, Substrate, Moisture, and Deflection Before Treatment

A sound repair starts with identifying the floor, its support, and the cause of poor grip. Clay pavers, thin brick veneer, and brick-look tile are different materials. Their installation, cleaning, and treatment needs can differ, too. Check for contamination, loose units, moisture, slope, and structural movement before applying anything.

Identify what is underfoot

Clay pavers are solid brick units; brick veneer is a thinner facing material; brick-look tile is usually ceramic or porcelain. If you are unsure, check building records or ask a qualified flooring professional. Do not choose a treatment based only on the word “brick” on a label.

Next, find out what supports the floor. Brick bonded to a concrete slab has different risks from brick installed over a framed wood floor. On a slab, check for cracks, loose areas, and moisture. On a framed floor, have the joists, span, and subfloor layers assessed before adding weight or a new finish.

For ceramic or brick tile on a framed floor, the structure must meet the required stiffness. A common minimum is L/360: under a design load, the floor’s deflection must be no more than the span divided by 360. Natural stone typically requires L/720. A stiff uncoupling membrane cannot make an undersupported floor structurally sound.

Look for the actual cause of slipping

Walk the area only when it is safe. Note whether the problem appears when the floor is wet, after cleaning, in a shaded outdoor spot, or near a food-preparation area. Grease, soap, algae, water, and a slick coating each need a different response. A rough-looking brick can still be slippery when contaminated.

Inspect grout or mortar joints and the edges of each unit. Look for cracks, rocking units, hollow sounds, loose mortar, and raised edges, called lippage. These are repair and trip concerns, not just traction issues. Also check the slope and drainage outdoors; water that cannot drain may keep the surface slick.

If a new tile overlay is being considered, check flatness as well. For tile with an edge at least 15 inches long, a common preparation target is 1/8 inch in 10 feet and 1/16 inch in 2 feet. Confirm the current applicable ANSI A108.02 requirements and the product system’s instructions.

Prepare the Surface and Apply Traction Treatment or Bonded Finish

Cleaning and preparation often solve the problem without covering the brick. Remove the contaminant using a method approved for the material, rinse and dry as directed, and repair unsound areas. If cleaning is not enough, test a compatible traction treatment on a small area before treating the full floor.

Clean first, then test

Remove loose dirt, grease, soap film, wax, and other residue with a cleaner approved for the brick and any existing finish. Follow its dilution, dwell-time, rinsing, and drying directions. Do not mix cleaning products. If algae is present, use a product labeled for the material and location, and prevent runoff from reaching plants or drains where the label warns against it.

A coating or sealer may be present even if the floor looks bare. Ask the installer or review product records if possible. A traction treatment that works on unsealed clay may not work on coated brick. Test in a discreet area and let it cure fully. Check grip and appearance under the conditions that caused the slip, such as dampness, if the product instructions allow this.

Avoid untested film-forming sealers, waxes, or coatings. They can reduce traction, trap contaminants, or peel. Do not assume a product marked “non-slip” is suitable for every brick, exposure, or cleaning routine. Follow the maker’s directions for preparation, application, cure time, and upkeep.

Compare practical options

These are starting points, not guarantees. A product’s performance depends on the surface and its care. For a high-risk area, ask the manufacturer for test data that matches the intended use, and consider a qualified flooring or slip-safety professional.

If replacing brick or installing an overlay

Do not cover loose brick, contaminated surfaces, or a substrate with unresolved moisture problems. For concrete, moisture testing may use ASTM F2170 (in-situ relative humidity) or ASTM F1869 (moisture vapor emission rate), as appropriate. There is no single moisture limit for every floor. Results must meet the limits set by the selected membrane, mortar or adhesive, and finish system.

Choose primers, membranes, mortar, sealer, and finish for the actual brick, substrate, and exposure. Where appropriate for the specified materials, use mortar meeting ANSI A118.4 or A118.15. During installation, periodically lift units to check coverage. A common target is at least 80% in dry interior areas and 95% in wet or exterior areas, with full support at edges and corners. The system instructions may require more.

Do not spot-bond units. Follow the mortar maker’s directions and use the specified bonding method. Repair unsound joints and prepare the surface with compatible materials. An uncoupling membrane may be part of a suitable system, but it does not correct inadequate joist or subfloor stiffness. Movement can crack grout or brick, loosen units, and create lippage.

Illustrative field scenarios

These examples show how diagnosis changes the repair; they are not test results or guarantees. In one common situation, a kitchen brick floor feels slick after mopping. If inspection finds no loose units and the problem began after a cleaner change, the first step is to check the cleaner’s label, remove residue as directed, and retest before adding a coating.

In another scenario, an exterior brick path stays slippery in shade and has green growth. The right sequence is to use a compatible algae treatment, address drainage or persistent dampness where practical, and reassess the clean surface. A surface treatment alone may not solve ongoing contamination or standing water.

Detail Transitions, Movement Joints, and Slip-Safety Requirements

A safer surface should not create a new trip or cracking hazard. Plan the transition to nearby floors, preserve the movement joints the installation needs, and verify traction after the treatment or finish has cured. The right details depend on the material, location, and manufacturer’s system.

Check traction claims in context

DCOF, or dynamic coefficient of friction, is a measure of how a surface resists sliding under a specified test method. ANSI A326.3’s DCOF value of at least 0.42 is a reference criterion for specified interior level surfaces expected to be walked on when wet. It is not a promise that every brick floor is safe.

The result does not account for every contaminant, slope, shoe, or use. Oil, soap, algae, and water can change how a floor performs. Nor should a value for one product be treated as proof for a different brick, coating, or finished installation. Ask whether the test applies to the actual surface and conditions. For a high-liability site, arrange appropriate testing of the finished floor under relevant conditions.

Keep joints and transitions sound

Movement joints allow a floor system to expand, contract, or move without forcing the grout to do that work. Detail perimeter and field joints according to TCNA EJ171 and the selected system. Do not fill movement joints with grout. Their width and spacing depend on exposure, floor dimensions, and materials, so there is no one gap that suits every installation.

At doorways and changes in flooring, avoid abrupt raised edges where people walk. Choose a transition suited to the materials and required height change. Keep drains, thresholds, and walking paths clear, and do not create a slope or edge that redirects water into a standing pool.

Keep the floor out of service through the full cure period stated by the treatment or installation manufacturer. Once ready, check the surface, joints, and transitions. If the floor is still slick, or has become rough in a way that affects cleaning or access, contact the product maker or a qualified installer before applying another product.

Maintain Traction, Clean Safely, and Protect the Finished Floor

Traction can change as residue builds up, treatments wear, or maintenance products leave a film. Use cleaning methods approved for the brick and any treatment, inspect trouble spots, and respond to spills or biological growth promptly. Recheck the surface after repairs or a change in cleaning products.

Use a non-film-forming cleaner unless the treatment manufacturer specifies another product. Follow the label, rinse when directed, and let the surface dry before judging its condition. Avoid waxes or polish unless the product system specifically approves them for the location and use.

For commercial spaces, include the floor in routine safety checks. Record where and when slips are reported, what contaminant was present, and what cleaning took place. This can help distinguish a recurring water or grease problem from a surface that needs a different treatment. Keep walkways free of loose mats and cords, and clean spills promptly.

Reassess after seasonal changes outdoors, plumbing leaks, repairs, or a new cleaning routine. If brick loosens, grout cracks, water remains on the surface, or the floor becomes slick again, investigate the cause rather than layering on another coating. The next step is to identify whether the issue is contamination, wear, drainage, or movement.

Bottom line: clean and diagnose first; treat only with a compatible product tested on the actual brick; and verify the finished surface under the conditions where people walk. If replacement or overlay is needed, confirm substrate stability, moisture, and support before installation.

Does a non-slip sealer always improve brick traction?
No. Some sealers can reduce traction or peel. Confirm that the product is compatible with the brick and intended use, and test it on a small area.

Can I use a traction treatment on any brick floor?
No. Brick type, existing coatings, exposure, and treatment chemistry matter. Check the product instructions and test a discreet area first.

Will scrubbing alone fix slippery brick?
It may if soap, grease, dirt, or algae is causing the problem. If the clean, dry surface remains slick, investigate a compatible traction treatment or other repair.

What does a DCOF of 0.42 mean?
It is a reference criterion in ANSI A326.3 for specified interior level surfaces expected to be walked on when wet. It does not guarantee safety in every condition.

Can I put new tile over slippery brick?
Only after confirming the brick and substrate are sound, clean, and suitable for the chosen system. Check moisture, flatness, framing, and transitions before covering it.

Does an uncoupling membrane fix a bouncy floor?
No. It does not increase inadequate joist or subfloor stiffness. Have the structure checked before installing a new finish.

How should I handle slippery outdoor brick?
Remove the cause with a compatible method, then check for standing water, shade, and recurring algae. A treatment may not work if the surface stays contaminated or wet.

When can people walk on treated brick again?
Wait for the full cure time in the product instructions. Dry-to-touch does not always mean ready for foot traffic.

(This article was written by one of our staff writers, Dr. James Caldwell. Visit our Meet the Team page.)