Tembok Carpenter & Building Services
Concrete Staircases in Kent
Architectural concrete stairs designed and poured on site — floating treads, cantilevered flights and polished helical staircases.
What's Included
Concrete Staircases — The Tembok Way
A concrete staircase is a finished architectural piece, designed by an engineer for its span and then cast, cured and protected as the house goes up around it.
- In-situ poured stairs
- Cantilevered & floating flights
- Polished concrete finish
- Steel reinforcement detailing
Cast on site or made elsewhere and craned in
An in-situ stair is cast in its final position, tying into the floors and walls around it. A precast flight is made off site and lifted in, which needs clear access for a crane or lifting gear and careful sizing to fit the opening.
In-situ suits stairs with landings, turns or unusual shapes; precast suits straight flights where access allows.
Spans, cantilevers and the engineer's design
How a stair is held up decides its reinforcement. A flight spanning between floors, a stair cantilevered from a wall with no visible support, and a spine stair on a central beam are each designed by a structural engineer, who specifies the steel and how it anchors into the building.
Going, rise and the surface underfoot
Tread and riser proportions are set to building regulations, and every step must match its neighbours so the stair feels natural to climb. The surface can be polished, honed or left board-marked from the mould.
- Polished: smooth and reflective, may need anti-slip treatment
- Honed: a matt surface with more grip
- Board-marked: textured, suits an industrial look
- Nosings: cast, inset strips or contrasting edges for visibility
Handrails, timing and protection
Balustrade fixings are planned before casting, with sockets or plates set into the concrete so glass, steel or timber rails can be fixed without drilling near reinforcement.
The stair is usually cast during the structural phase, so it is then covered with boards and edge protection while plastering, decorating and other trades work around it.
Mixing concrete with timber, steel or glass
A cast flight can carry oak treads bolted on top, a steel stringer alongside or a frameless glass balustrade. Combining materials softens the look and adds warmth underfoot, but each fixing has to be agreed with the engineer before the pour so nothing is drilled through the reinforcement later. Lighting set into the wall beside the steps, or recessed under each tread, is also wired in advance.
What shapes the cost of a cast stair
Design and finish matter as much as the number of steps.
- In-situ casting or a precast flight with lifting
- Straight, turning or cantilevered design
- Engineer's design and reinforcement
- Polished, honed or board-marked finish
- Nosings and slip-resistance treatment
- Balustrade type and cast-in fixings
- Protection through the rest of the build
Areas covered
Concrete Staircases across Kent & East Sussex
FAQs
Concrete Staircases — frequently asked
Is a concrete staircase slippery?
A highly polished finish can be. Honed surfaces, anti-slip treatments or inset nosings improve grip.
Can a concrete stair be cantilevered from a wall?
Yes, if the wall and reinforcement are designed for it by a structural engineer.
How are handrails fixed to a concrete stair?
Sockets or plates are usually cast in during the pour so rails can be fitted without drilling near the reinforcement.
Should a concrete stair be precast or cast in place?
Precast suits straight flights with good access; casting in place suits landings, turns and unusual shapes.
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