Aluminium Stair Nosing 66x55mm Raked Back, Cut to Size 700-2500mm

Stair goings are rarely a round number. If you are refurbishing a flight where the treads measure 843mm, or 1,120mm, buying a stock bar means cutting it back on site: an angle grinder, a burred edge, and an offcut too short to use anywhere else. This listing works the other way round. Take the measurement off your setting-out and enter it in millimetres, anywhere from 700mm to 2500mm, and every nosing is cut to that length before it ships.

The profile is a raked back aluminium stair nosing with a 66mm tread plate and a 55mm nose. It is a deep, clearly read step edge built for interior stairs carrying steady daily traffic: offices, schools, healthcare, and shared residential stairwells. It is the same extrusion as our 1 metre and 2 metre stock lengths, and the only difference is who does the cutting.

Why the raked back matters

The tread plate is not a constant thickness. It carries a 4mm gauge at the nose, where the wear and the impact happen, and ramps down to 1mm at the back edge. That taper is the entire point of a raked profile. Fitted over an existing vinyl, LVT, laminate, timber or ceramic floor, the thin back edge feathers onto the surface instead of standing proud of it, so there is no square lip across the going for a toe, a castor or a mop head to catch. On a refurbishment where the existing covering is staying put, that is the difference between a nosing that reads as part of the stair and one that reads as an obstacle.

The extrusion is aluminium alloy 6063 T6, the standard architectural grade, chosen because it takes an anodised finish evenly and holds a crisp arris under foot traffic without the surface chalking. A single full-width channel runs the length of the tread and carries a 49.5mm insert, which is what actually delivers the slip resistance and the visual contrast.

Choosing the finish and the insert

Two decisions, and they are independent of one another. The carrier finish is the metal you see around the insert. Satin aluminium and mill aluminium are the neutral, specify-and-forget choices. Black anodised suits dark flooring and contemporary schemes. Bronze and light bronze are warm metallics for hospitality and heritage work where plain silver would look wrong.

The insert is the working surface, and it is where the safety performance sits. The manufacturer's published slip resistance values for the insert materials are: castellated PVC 76 wet / 85 dry, Olympic Grip 71 wet / 102 dry, smooth textured PVC 56 wet / 65 dry, and the aluminium inserts 54 wet / 82 dry. Castellated PVC is the workhorse, with fine longitudinal ribs, the widest colour range and the best wet figure of the group. Olympic Grip is a coarse gritted band for the busiest flights. Smooth textured is the flatter, quieter look for lighter-traffic stairs. The aluminium inserts are chosen for appearance rather than grip, so keep them away from high-traffic or wet routes.

On contrast: Approved Document M expects a step edge to be visually distinguishable from the tread. A pale insert against a dark floor covering, or the reverse, does that job far better than a metal insert in a metal carrier.

Interior stairs only

This is an internal profile. It is not intended for external steps, weather-exposed entrance thresholds or wet processing areas. For those you want a glass-fibre reinforced insert in a mill aluminium carrier, which is a different build of the same extrusion; ask us and we will quote it rather than sell you the wrong thing.

Specifications

Measuring and ordering

Measure the full width of the tread, edge to edge, and order that figure. Where a flight is out of square, which is common on older concrete stairs, measure every step rather than assuming they match, and order each length separately. Cut lengths are made to your measurement, so they are non-returnable except where faulty. Check the figures before you order.

Installation, use and care

Fix mechanically with countersunk screws into plugs, at roughly 300mm centres and no closer than 50mm to either end, onto a substrate that is sound, dry and level. Pilot the holes on timber. A bed of grab adhesive under the tread plate alongside the screws removes the drumming you otherwise get from a mechanically fixed profile on a hollow tread. Clean with a neutral-pH detergent and a damp mop, and avoid solvent cleaners and abrasive pads, which will dull an anodised finish. The PVC inserts are replaceable, so a tread edge that takes a hammering can be renewed without lifting the extrusion.

Frequently asked questions