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Description
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 50mm 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.
What it is
A 50mm-wide band of aluminium oxide grit bonded into a resin matrix, bedded into a routed groove or fixed 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 50mm this is a full-width grip band rather than a line. It is what gets specified on deep goings, on transport and stadium stairs, and where a risk assessment has asked for the largest practical contact area on each tread.
Why cut to size
Cutting carborundum on site is slow and unpleasant: the grit destroys a fine-toothed blade and the dust is abrasive, and a 50mm section is heavy going with a hand tool. 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.
Specifications
| Insert width | 50 mm |
| Anti-slip infill | Carborundum (aluminium oxide grit in resin) |
| Cut length range | 250 mm to 2000 mm, tolerance +/- 5 mm |
| Fixing | Bedded in adhesive into a routed groove, or screw fixed |
| Application | Internal or external |
| Manufactured | United Kingdom |
Measuring and fixing
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 band back at least 15mm from the front arris so the nose edge stays intact, and check the tread thickness before routing a groove this wide. The substrate must be clean, dry and free of laitance; bed in an 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.
Ordering and delivery
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. Colour options are confirmed with your order.
Delivery Information
| Service | Timeframe | Cost |
|---|---|---|
| Standard UK Delivery | 2–4 business days | £9.99 |
Orders placed before 12pm Mon–Fri are typically dispatched same day. Delivery to all UK addresses. Contact us for international enquiries.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
