Aluminium Stair Nosing 62x32mm Square Edge, Bronze & Black

A square-edge aluminium stair nosing for interior flights — 62mm across the tread, a straight 32mm front leg down the face of the step, and a crisp square corner where the two meet. Supplied in 1 metre and 2 metre bars, in three designer carrier finishes — bronze, light bronze and black anodised — and thirty-two insert colours.

The flat front is the whole point of this profile. Where the going and the riser already meet at a sharp arris, a square nosing sits tight against both faces instead of bulging over the edge the way a bullnose does. On a clean modern stair that is the difference between a step edge that looks detailed and one that looks retrofitted.

Why fitters choose this profile

5mm gauge: a carrier, not a cover strip

The extrusion is aluminium alloy 6063 T6 at a 5.0mm gauge. On a stair edge that thickness is the difference between a nosing that stays flat under load and one that dishes between fixings after a couple of years. It is screw-fixed through the face of the tread plate with size 8 screws, so it is mechanically held rather than trusting adhesive, and the back edge is shaped to abut carpet and carpet tiles cleanly.

The insert carries the slip resistance — and the numbers are published

The recessed channel takes a full-width insert that sits proud of the metal, and that is what your foot actually lands on. The manufacturer publishes slip resistance values by insert family: castellated PVC SRV 76 wet / 85 dry; Olympic Grip 71 wet / 102 dry; smooth textured PVC 56 wet / 65 dry; aluminium insert 54 wet / 82 dry. Manufacturer's stated figures for the insert materials, not our own testing — and the reason insert choice matters more than finish choice on any flight that gets damp.

Three finishes that are not silver

Most nosings in this class come in mill, satin and polished only. This page is the other half of the range: bronze, light bronze and black anodised. The two bronzes give the look of aged brass at a fraction of solid brass money, and black anodised lets the metal recede into a dark floor so the insert does the talking. They cost more than the mill and satin finishes and exist for appearance rather than performance — the extrusion, the channel and the inserts are identical. For mill, satin or polished, see the standard aluminium version of this nosing.

Where it is used

Interior stairs carrying low to medium traffic where the stair is part of the scheme: hotel and restaurant flights, reception and lobby stairs, boutique retail, apartment common parts specified to a finish schedule, and domestic staircases where a silver edge would look wrong. It suits flights finished in carpet or carpet tile, and timber steps where the profile is rebated so the tread plate finishes flush with the going. For external work, or a stair taking genuinely heavy traffic and impact, there is a GRP-insert build of the same profile — that is what to specify there, and we will quote it.

Specifications

Choosing the right option

Three choices, and the first two get confused constantly. Finish is the aluminium carrier — the metal you see around the insert and down the front leg. Colour is the insert sitting in the channel. They are picked independently, which is why some combinations read as two metal names: a bronze carrier with an aluminium insert, for example. Length is the bar you receive — 1 metre covers most domestic goings, 2 metres is the economical buy if you are cutting several steps from one bar.

Bronze is the deeper, warmer tone and light bronze the paler, brassier one; they cost the same, so the choice is purely visual and worth ordering a sample of each. Black anodised is the one to pick when you want the metal to disappear and the insert to carry the contrast. All three are anodised coatings — do not overtighten fixings and keep abrasive pads off them.

On the insert: castellated PVC is the default and carries the highest wet figure. Smooth textured looks flatter and more discreet, but the wet figure drops from 76 to 56, so keep it away from entrance flights. Aluminium inserts give an all-metal look at the lowest wet figure. Olympic Grip is the coarsest and the best in the dry.

Installation, use and care

Set out the flight and cut each bar to the going with a mitre saw and a non-ferrous blade. Drill and screw-fix the tread plate to the substrate with size 8 screws at regular centres; on timber steps the profile can be rebated so the plate finishes flush. Fit the nosing before the floorcovering is dressed up to the back edge, then trim the covering to abut the profile. After that it is maintenance-free — a neutral floor cleaner and a damp mop. Keep abrasive pads and solvent cleaners off the anodised and bronze finishes; they cut through the coating and expose bare aluminium.

Frequently asked questions

What lengths does this listing supply, and can I get an exact size?

1 metre and 2 metre bars, priced per bar. If you need a specific measurement, order the cut-to-size version of the same profile — any length from 700mm to 3200mm, with dimensions varying by up to ±5mm in line with the manufacturer's tolerances. Custom cut lengths are non-returnable except where there is a fault.

What is the difference between the Finish option and the Colour option?

Finish is the aluminium carrier — bronze, light bronze or black anodised on this page. Colour is the insert that sits in the recessed channel. They are chosen independently, which is why some combinations read as two metal names.

Where are the mill, satin and polished finishes?

On the companion listing for the same profile. We split the range across two pages because a single page cannot offer all six finishes, all thirty-two inserts and both bar lengths at once without some combinations becoming unselectable at the checkout.

Can I use this nosing outdoors, or on a heavy-traffic stair?

No. This profile is specified for interior stairs with low to medium traffic volumes. For external locations or heavy foot traffic there is a build in mill aluminium with a glass-fibre reinforced (GRP) anti-slip insert. Ask us and we will quote it.

Which insert has the best slip resistance?

On the manufacturer's stated figures the wet ranking is castellated PVC 76, Olympic Grip 71, smooth textured PVC 56, aluminium 54. Olympic Grip records the highest dry figure at 102. No Approved Document K or M compliance statement is published for this line.

Ordering and delivery

Choose your finish, insert colour and bar length — the price shown is the price for that bar, with nothing added at checkout but delivery. UK mainland delivery is a single flat rate. For an exact measurement rather than a stock bar, use the cut-to-size version of this square edge stair nosing. Matching ramp extensions, tread extenders and a nap detail for broadloom carpet are available — contact us and we will quote them alongside your nosings.