What ladder rung covers do before a wet rung costs someone their footing
A ladder rung gives a boot less contact area than almost anything else a person stands on. It is narrow, usually round, and often the only thing between a worker and a fall. Add rain, oil, mud, or ice and that small round surface stops being a foothold. The foot rolls off the side before the hand can catch up.
Anti-slip ladder rung covers fit over the rung that is already there. Each cover carries a gritted surface that gives the sole something to bite into, turning a slick round bar into a textured foothold. The rung underneath does not change; what changes is what the boot lands on.
The point of failure is usually the descent. Climbing, a person is pulling into the ladder and can feel a foot slip before committing weight to it. Coming down, weight goes onto the foot before the eye confirms placement, and a rung slick with condensation gives no warning at all.
One thing to be clear about from the start: these covers are not load-bearing. They are installed over an existing rung and rely on it for strength. They add traction to a sound ladder. They do not repair or replace a rung that has corroded or bent.
Why a bonded alumina surface, and why this construction
The gripping surface is an engineered mix of epoxy, resin, and fused alumina aggregate, bonded to a formed base. That matters because of what fused alumina is: it measures 9.4 on the Mohs hardness scale. Diamond is 10. Ordinary silica sand and quartz, the grit that gets tracked onto a ladder from a job site, sit around 6 to 7.
In practice that means the abrasive on the cover is harder than the material trying to wear it down. A wear test run to 30,000 cycles at 400 pounds measured roughly 0.013 of an inch difference between the worn and unworn sections. That is the difference between a surface that polishes smooth and one that keeps its texture.
This is also the argument against anti-slip tape on rungs. Tape is a consumable — it lifts at the edges, fills with grime, and comes back onto the maintenance schedule. A formed cover is fastened or bonded in place as a permanent part of the ladder, and nobody has to scrape a rung clean to reapply it.
Three base materials are available: 1/8-inch pultruded fiberglass at 0.125 inch thick, G90 galvanized steel at 18 gauge, and #316 stainless steel at 18 gauge. Fiberglass is light and impact-resistant and takes no interest in corrosion. Galvanized steel handles rough industrial duty. Stainless is the choice for washdown, marine, and chemically aggressive settings.
Grit comes in five grades, from extra coarse at #10 mesh through coarse #20, fine #24, extra fine #36, and super fine at #54 mesh. The grade is a real decision, not a preference — coarse grit bites through mud and heavy soil, while finer grit suits cleaner environments and lighter footwear.
Two profiles cover most rungs: channel-shaped and half-round. Round covers fit rungs from 3/4 inch to 2 inches in diameter in fiberglass, and 3/4, 7/8, or 1 inch in steel. Channel covers span 3/4 inch to 2 inches. Maximum length is 48 inches, and covers are made to order rather than pulled from stock.
The independent test results are worth reading before you spec into a hard environment. Tested on the 1/8-inch fiberglass base, the covers came through 20 thermal shock cycles from minus 40°F to 150°F with no cracking or melting, and an impact of roughly 138 joules detached the coating only at the point of strike, with no shattering. Flame spread measured 20 under ASTM E84.
Where it belongs, and what it is not
The core application is fixed access ladders in demanding settings: tank and silo ladders, offshore and marine structures, power generation plants, water treatment, refineries, mining, and transportation fleets. Anywhere a worker climbs in weather, in boots, carrying something, with a slick rung between them and the ground.
Food and beverage processing is a specific case worth knowing about. The stainless steel version carries NSF acceptance as a slip resistance treatment for walking surfaces in and around food processing areas, which is the kind of question that stops a specification cold if the answer is not documented.
Ladders are one line item in a facility's fall exposure, and stairs are usually the bigger one by traffic volume. The same reasoning that puts gritted covers on a tank ladder applies to a set of exterior stair treads at the same site, and it is worth surveying both at once rather than solving one and leaving the other.
What this is not: a structural component, a repair for a damaged rung, or a substitute for the ladder meeting whatever code applies to it. Covers add traction to a compliant, sound ladder. If the ladder itself has a problem, that gets fixed first.
It is also not an off-the-shelf item. Covers are manufactured to the rung being covered, so this is a specify-and-order product rather than something to grab from a shelf mid-shift.
Three Things to Check Before You Spec It
First, identify the rung profile and measure the diameter. Round and channel rungs take different covers, and the diameter determines what will seat properly. Round fiberglass covers span 3/4 inch to 2 inches; round steel covers come in 3/4, 7/8, and 1 inch only. Measure an actual rung rather than working from the ladder's drawings — field-fabricated ladders vary more than paperwork suggests.
Second, measure the rung length and look for obstructions. Maximum cover length is 48 inches, and covers generally run up to 2 inches shorter than the rung itself. If you want full rung coverage, check that nothing interferes with seating — a weld bead where the rung meets the side rail is the usual culprit, and it is easier to find now than with a crew on the ladder.
Third, pick the base material and the fastening method together. Most covers install with a polyurethane construction adhesive. Mechanical fasteners work on large-diameter hollow channel rungs, and steel covers on steel rungs can be tack-welded. Edges can be sealed after installation to keep moisture out of the joint, which matters on any ladder living outdoors. Pre-drilled or slotted holes and fasteners are available if you ask at the time of order.
Why Mats Inc.
This is a made-to-order product, which means the quote is only as good as the questions asked before it. We ask for the rung shape, the measured diameter, the rung length, what the environment throws at it, and what people are wearing on their feet — because grit grade and base material both follow from that, and a cover ordered on assumptions arrives as an expensive piece of the wrong shape. Sixty years of industrial and commercial supply is where that checklist came from.
Ladder Rung Covers — Specifications
| Anti-slip surface | Engineered epoxy, resin, and fused alumina aggregate bonded to the base (fused alumina: Mohs 9.4) |
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| Base materials | 1/8" pultruded fiberglass (0.125" / 3 mm); G90 galvanized steel, 18 ga (0.05" / 1.2 mm); #316 stainless steel, 18 ga (0.05" / 1.2 mm) |
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| Profiles | Channel-shaped and half-round |
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| Rung diameters | Round fiberglass 3/4"–2"; round steel 3/4", 7/8", 1"; channel 3/4"–2" |
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| Maximum length | 48" (1,200 mm); typically supplied up to 2" shorter than the rung |
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| Grit grades | #10 (extra coarse), #20 (coarse), #24 (fine), #36 (extra fine), #54 mesh (super fine) |
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| Colors | 14 standard including safety yellow and three fluorescents; 14 premium; two-tone perimeter configuration; 6 photoluminescent; custom available |
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| Installation | Adhesive, mechanical fasteners, or tack welding (steel bases); edge sealing available; pre-drilled or slotted holes on request |
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| Load rating | Not load-bearing — installed over an existing rung |
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| Wear test | 30,000 cycles at 400 lb; ~0.013" (0.33 mm) difference between worn and unworn sections |
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| Impact | ~138 joules at 60°F — coating detached at point of impact only, no shattering |
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| Thermal shock | −40°F to 150°F, 20 cycles — no cracking or melting |
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| Fire performance | ASTM E84 flame spread 20, smoke developed 400; ASTM E648 average critical radiant flux 1.04 W/cm²; FMVSS 302 passed |
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| Food processing | Stainless steel version: NSF accepted as a slip resistance treatment (P1) for walking surfaces in and around food processing areas |
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| Sizing | Made to order; custom sizes and shapes available |
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| Warranty | 1-year limited (Mats Inc.) |
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Test results shown are for the 1/8" fiberglass base unless otherwise noted.
Frequently Asked Questions
What is the gritted surface actually made of?
Answered by Dustin Thompson, Owner & CEO, Mats Inc.
It is an engineered combination of epoxy, resin, and fused alumina aggregate, bonded onto the base material. Fused alumina is the part that does the gripping, and it measures 9.4 on the Mohs hardness scale — diamond is 10, and the sand and quartz that get tracked onto a ladder are around 6 to 7. So the abrasive is harder than what is trying to wear it away.
The important distinction is bonded versus applied. Anti-slip tape is a film with adhesive behind it, and it has a service life measured in months on a ladder. This surface is part of a formed cover that gets fastened to the rung. Once it is on, nobody is scraping residue off a rung to reapply anything.
How long does it hold up, and is there test data?
Answered by Dustin Thompson, Owner & CEO, Mats Inc.
There is real data, which is more than most anti-slip products offer. A wear simulator ran 30,000 cycles at 400 pounds and measured about 0.013 of an inch of difference between the worn and unworn sections — essentially still there. Thermal shock testing cycled from minus 40°F to 150°F twenty times with no cracking or melting, which covers most North American outdoor service.
Impact testing is the one I point people to for industrial sites. At roughly 138 joules — a 17-pound pendulum — the coating detached only where it was struck, and the cover did not shatter. If a wrench comes off a platform and hits a rung, you lose a patch, not the whole cover. Those figures are for the fiberglass base. Our warranty is 1-year limited.
Will these work in washdown, marine, or chemical environments?
Answered by Dustin Thompson, Owner & CEO, Mats Inc.
That is what the base material choice is for. Fiberglass does not corrode at all and is the default for most wet and outdoor work. Galvanized steel handles general industrial duty. For saltwater, washdown, and chemically aggressive settings, #316 stainless is the one to specify, and the stainless version also carries NSF acceptance as a slip resistance treatment for walking surfaces in and around food processing areas.
One installation detail matters more in those environments than anywhere else: seal the cover edges after installation. Any joint between a cover and a rung will hold moisture if you let it, and on a marine or washdown ladder that is where corrosion starts. Say so when you order and the fasteners and sealing can be planned rather than improvised.
How do I measure my ladder to order the right covers?
Answered by Jinna Hopson, Vice President of Marketing, Mats Inc.
Three measurements and one observation. Measure the rung diameter, measure the rung length, and note whether the rung is round or channel-shaped. Then look at where the rung meets the side rail — if there is a weld bead or bracket there, a full-length cover may not seat flat, and that is much easier to spot now than with someone on the ladder holding a part that will not fit.
On sizing: covers are supplied up to about 2 inches shorter than the rung, and the maximum length is 48 inches. Because everything is made to order, there is no standard size to compromise toward — but that also means the measurements need to be right the first time. Measure an actual rung rather than trusting the ladder drawings, especially on anything field-fabricated or older than a decade.
What colors are available, and do they stay visible?
Answered by Jinna Hopson, Vice President of Marketing, Mats Inc.
Fourteen standard colors including safety yellow and three fluorescents, plus fourteen premium colors and custom matching. Weathering testing showed only small color shifts over exposure, so a safety yellow ladder is still reading as safety yellow after a season outdoors rather than fading to cream.
Two options are worth knowing about. A two-tone configuration puts a contrasting color around the perimeter of each cover, which marks the safe foot placement zone and makes the edge of the rung legible at a glance. And a photoluminescent version glows in the dark to help people find their way out during a power failure — the pigment is built into the anti-slip system rather than painted on, and testing showed full luminescence retention after 158 hours and 90 percent after 200.
Can these be customized, or built into new equipment?
Answered by Jinna Hopson, Vice President of Marketing, Mats Inc.
Both. Because every cover is manufactured to the rung it goes on, custom sizes and shapes are part of the normal process rather than a special request. If you have an unusual rung profile, send the dimensions or a drawing and it can be made to match. Colors can be matched beyond the standard and premium ranges as well.
On the OEM side, these can be specified into equipment being built rather than retrofitted afterward, which is the better path if you are fabricating ladders or access structures. Send drawings and the covers are made as part of the build. For facilities standardizing across a site, picking one color and one grit grade up front makes reordering and future maintenance far simpler than handling each ladder as its own project.
Written by Dustin Thompson, Owner & CEO, Mats Inc.
