Aluminium Stair Nosing 59x30mm Square Back, Bronze & Black

A slimline square back stair nosing in aluminium, 59mm across the tread and 30mm down the nose, supplied in 1m and 2m bars. Square at the rear, so the floorcovering is laid up to the nosing rather than under it. This page carries the three designer finishes — bronze, light bronze and black anodised — for stairs where a silver edge would look wrong.

Why fitters choose this profile

Square back gives you a clean butt joint. The rear of the tread plate finishes square, so a new LVT, vinyl or laminate floor can be laid tight up against it and the junction reads as a deliberate line rather than a transition. On a new stair, or a refurbishment where the going is coming up anyway, that is the neater detail and the faster one to fit.

A fine edge line, and an honest limit. At 2.5mm gauge this is a lighter extrusion than a heavy-duty nosing, which is exactly what keeps the sightline slim. The trade-off is real and we would rather you heard it from us: it is made for low to medium traffic, and sustained heavy footfall or impact can wear the surface finish back to bare aluminium. Offices, apartment blocks, shops, homes — yes. School corridors and station stairs — specify something heavier and we will point you at it. That warning matters more on an anodised or bronze finish than on mill, because the colour is in the coating.

Anti-slip performance you can quote in a spec. The insert does the gripping, and the manufacturer publishes pendulum figures for each one: castellated PVC at SRV 76 wet / 85 dry, Olympic Grip at 71 wet / 102 dry, smooth textured at 56 wet / 65 dry. Those are insert test figures rather than a test of your finished stair, but they are real numbers you can put in front of a specifier.

Bronze, light bronze and black anodised. The two bronzes read as aged brass at a fraction of brass money and cost the same as each other, so the choice between them is purely visual. Black anodised lets the metal recede into a dark floor so the insert carries the contrast. The extrusion, the channel and the thirty-two inserts are identical to the mill, satin and polished version of this nosing.

Where it is used

Hotel, restaurant and lobby stairs, boutique retail, apartment common parts specified to a finish schedule, and domestic LVT or vinyl staircases where a silver edge would look wrong. For external steps or heavy commercial traffic the manufacturer builds the same profile in mill aluminium with a glass-fibre reinforced (GRP) insert — we do not stock it, but we can quote it.

Specifications

Choosing the right option

Insert first, because it decides both grip and colour. Castellated PVC is the default and the one most jobs end up with: highest wet figure, widest colour range. Smooth textured trades a little grip for a surface that mops clean, which matters in food and healthcare settings. Olympic Grip is an aluminium-oxide surface for the hardest-worked stairs on this profile and costs more accordingly. The aluminium inserts are a design decision, not a grip decision — specify them when you want the whole nosing to read as one piece of metal.

Then the carrier finish. Bronze is the deeper, warmer tone; light bronze the paler, brassier one; black anodised the darkest. Order a sample of each before committing a flight — anodised finishes photograph nothing like they read on site.

Then length. A 2m bar cuts to two 900mm domestic treads with an offcut; 1m suits a single standard going. Bars ship undrilled so you can set out fixings to your own centres; the manufacturer will pre-drill for concealing plugs or a retro-fit infill and charges 5%, which we quote with your order rather than loading onto every price here.

Visual contrast. Approved Document M asks for the step edge to be visually distinguishable. These are dark carriers, so put a genuinely light insert against them and check the two materials together in daylight rather than on a screen — order free samples if there is any doubt.

Installation, use and care

Fix mechanically with size 6 screws. We do not supply screws and plugs because the right ones depend on your substrate — concrete, timber and screed all want something different. Pre-drill and countersink before fixing, and do not overtighten: on a 2.5mm gauge anodised bar the coating marks easily. The profile can be rebated into timber steps to finish flush, and is designed to abut LVT or vinyl at the nose. Cut with a chop saw and a non-ferrous blade, then deburr the cut end. Clean with warm water and a neutral detergent; keep abrasive pads and solvents away from the bronze and anodised finishes.

Frequently asked questions

Square back or raked back?

Square back butts against a floorcovering laid up to it — the neater option when the going is being relaid. Raked back angles down onto an existing floor and closes the joint, which suits refurbishment over a floor that is staying put.

Where are the mill, satin and polished finishes?

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

Is this suitable for a busy commercial stair?

No. It is specified for low to medium traffic, and the manufacturer warns that heavy impact or constant footfall can wear through the finish to the bare aluminium beneath. For a stair that takes real punishment, choose a thicker-gauge profile — ask us and we will recommend one.

Can I have the bars pre-drilled?

Yes, quoted rather than sold here. The manufacturer offers drilling for concealing plugs and drilling with a retro-fit infill at 5%. Bars on this page ship undrilled; tell us what you need and we will price it with your order.

Can I get a length other than 1m or 2m?

Yes — use our cut-to-size listing and specify the exact millimetre you need between 700mm and 3200mm.

Will it work outside?

Not this version. There is a GRP-insert build of the same profile for external and wet areas; ask us and we will quote it.

Ordering and delivery

Choose finish, insert colour, then bar length. Need an exact size? Use our cut-to-size slimline square back stair nosing, priced per centimetre from 700mm to 3200mm. Free samples are available so you can hold the insert colour against your floor before you commit. UK mainland delivery is a flat rate shown at checkout.