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Stair treads are rarely a round number, and an insert cut a few millimetres short leaves a gap that fills with grit and lifts at the end. This is the same 25mm carborundum insert as our 1m, 1.5m and 2m stock lengths, cut here to the exact millimetre you specify between 250mm and 2000mm, tolerance plus or minus 5mm.
A 25mm-wide strip of aluminium oxide grit bonded into a resin matrix, set in a carrier that beds into a routed groove or fixes to the tread surface. Carborundum is the hardest of the common anti-slip infills: it does not burnish out under footfall the way a soft PVC insert eventually does, which is why it is specified for entrances, plant rooms, external steps and any stair walked on in wet boots.
At 25mm the strip is wide enough that the ball of the foot lands squarely on grit rather than partly on it, which is what a busy public stair actually needs from a single insert.
Cutting carborundum on site is slow and unpleasant: the grit destroys a fine-toothed blade and the dust is abrasive. Cutting in a workshop keeps the ends square and the grit intact right to the end of the strip, so it beds cleanly instead of rocking on a burr. On a stair where every going differs, that is the difference between a day of measuring and cutting and an afternoon of fixing.
| Insert width | 25 mm |
| Anti-slip infill | Carborundum (aluminium oxide grit in resin) |
| Cut length range | 250 mm to 2000 mm, tolerance +/- 5 mm |
| Colours | 12, including four speckled and stone-effect finishes |
| Fixing | Bedded in adhesive into a routed groove, or screw fixed |
| Application | Internal or external |
| Manufactured | United Kingdom |
Measure each tread individually rather than assuming a flight is consistent, and take 3mm to 5mm off a wall-to-wall measurement so the strip drops in without scraping. Set the strip back at least 15mm from the front arris so the nose edge stays intact. The substrate must be clean, dry and free of laitance; bed in a bar of exterior-grade adhesive worked well into the groove and weight the strip until cured. Custom lengths are made to your figures, so they are non-returnable except for faults.
Where the insert is doing a safety job rather than a decorative one, choose a colour that contrasts in tone with the tread: obsidian on pale concrete, chalk or Portland stone on dark stone. The speckled and marble-effect colours are the ones to pick when the strip should read as part of the floor rather than as a warning line.
Cut lengths are made to order; allow additional working days over a stock length and we will confirm a dispatch date. Standard UK mainland delivery is a flat rate. If your treads sit close to 1m, 1.5m or 2m, the stock listing linked above will reach you sooner.
| Service | Timeframe | Cost |
|---|---|---|
| Standard UK Delivery | 2 working days from dispatch | £9.99 |
Orders placed by 2pm (UK time) on a working day are dispatched the same day. Orders placed after 2pm or on non-working days are dispatched the next working day. Delivery takes 2 working days from dispatch. Working days are Monday to Friday, excluding bank holidays. UK delivery costs £9.99. Contact us for international enquiries.
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Overall rating: 5.0 / 5 from 6 reviews.
Popped up in a snap, and it looked bang on the moment I opened it. Weve laid this along our busy factory steps where oil spills are all too common, and honestly, its been a game-changer. The grooves handle even the wettest days without a fuss, keeping everyones footing secure without any dreary cleaning struggles right from day one to now. Having the any option was quite helpful as we could choose precise lengths for each of our diverse stair settings!
Had to sort out the old, worn strips at our uni campuss concrete stairs and stumbled upon this gem. The speedy delivery meant we could get it sorted stat, and it came snugly packaged with everything intact. Great for directing foot traffic in a busy environment like ours!
Wasnt convinced initially, but the packaging kept everything secure and well-protected during delivery. Getting it installed was a cinch; just as easy as promised with no fuss or mess on our wood steps. The any that landed at the front door is exactly what you’d hope for—great quality at first glance.
Put it in over six months ago on the staircase at our hotel. Despite constant foot traffic, this inserts weightiness ensures its still firmly planted and hasnt budged a millimetre. Ive been impressed with how well its held up without any noticeable wear or grit building underneath.
Got this for some ceramic steps at home that looked a bit incomplete. Adding this neat trimming really elevated the overall look. The fact you can have it cut to virtually any size is handy too – worth it if youre looking to tie together a cohesive finish on your stairs, like I did in my gallery space.
Quick and easy fix. These inserts are spot on for cutting them to the exact size I needed, leaving no annoying gaps. Installed them on an old set of metal stairs in my parking lot stairwell - couldnt have gone smoother! The rough edges rarely lift now, and even with all that oil grime around, they securely grip every time. Magic solution when the any snug fit is crucial!
