Painting Spiral and Curved Staircases in London Properties: Access, Materials and Finishes

The Spiral Staircase: Beautiful, Challenging, Worth Getting Right

Spiral and curved staircases are a feature of some of London's finest properties. You find them in Georgian townhouses that have had architectural metalwork added during later renovations, in 1930s apartment buildings with Art Deco wrought iron balustrades, in Victorian houses with sweeping curved timber staircases, and increasingly in contemporary refurbishments where a bespoke metal spiral connects living floors to a lower-ground or rooftop space.

Whatever the era or material, these staircases share one characteristic: they are difficult to paint well. The geometry is complex, access is awkward, and the finished work is highly visible — often the centrepiece of an entrance hall or living space. Here's how we approach them.

Access: The First Challenge

The fundamental difficulty with a spiral or curved staircase is that you can't easily set up a simple platform and work systematically from one end to the other, as you can with a straight staircase. Every rung, every spindle, every section of curved handrail presents its own access challenge.

For freestanding metal spiral staircases, we typically work from the outside in — painting the outer handrail, the outer face of the treads and risers first, then working inwards. The central column is usually the last element. On narrower spirals, this can involve some genuinely awkward contortions, and we use a combination of brushes of different sizes and angles to reach the underside of treads and the inner faces of spindles.

For curved timber staircases with a generous sweep — typical in a Victorian townhouse — the primary access challenge is the upper stairwell. We use appropriate hop-up staging or a combination of stair-adaptor platforms and pole systems to access the upper flights and the stairwell walls without working dangerously from a stepladder on stairs. Working safely matters as much as working well.

Metal Staircases: Preparation Is Everything

Wrought iron, cast iron, and mild steel all require thorough preparation before painting. Any rust must be treated properly — either ground back to bright metal or treated with a rust converter, depending on the extent of the corrosion. Skipping this step and painting over rust guarantees that the new paint will fail, often within a year.

After rust treatment, we apply a two-part epoxy primer or a specialist metal primer, depending on the substrate and the condition. This primer provides the adhesion base for the topcoats. For topcoats on interior metalwork, we typically use a high-quality solvent-based gloss or a satin metalwork paint. Water-based alternatives have improved significantly and are now viable for interior metal applications, with the advantage of lower odour and faster recoat times.

The most popular colour for metal spiral staircases in London period properties is still gloss black. It's classic, it looks crisp against white-painted walls, and it's unambiguous. Deep colours — racing green, dark navy, graphite — are increasingly popular as alternatives and can look extraordinary in the right setting. Anything lighter tends to show marks more readily and requires more frequent touching in.

For architectural details such as handrail end scrolls and decorative spindle heads, we apply paint with a small artist's brush to ensure complete coverage in every crevice. The difference between a spiral staircase that's been properly painted and one that's been rushed is most visible in exactly these details.

Timber Staircases: The Approach Varies by Condition

Timber spiral and curved staircases present different challenges. New or relatively recently installed timber can be painted directly after appropriate priming — the key is to use a primer that raises the grain, which is then sanded back before the first topcoat. This prevents grain texture appearing through the finished paint.

For older timber staircases with multiple layers of historical paint, the decision about whether to strip back or overcoat depends on the current condition. If the existing paint is well-adhered, sound, and relatively thin, a thorough sand and degrease followed by a fresh topcoat is usually adequate. If the existing paint is thick, uneven, crazed, or showing adhesion failure, stripping back is the right answer — it's more work upfront but produces a far superior and more durable result.

For handrails, we often use an oil-based eggshell rather than gloss — it gives a more refined, furniture-like quality that works better in modern interiors and is also more pleasant to touch. A gloss handrail can feel slightly tacky in the hand, particularly in warmer weather. Eggshell reads as more considered.

Spindles and Balusters: Detail Work That Makes a Difference

The spindles or balusters are where the quality of a staircase paint job is really revealed. Each individual spindle needs to be painted on all faces, including the back face that's not immediately visible from the main viewing angle. Missed patches on the rear of spindles are a telltale sign of hurried work.

For turned timber spindles with decorative profiles — common in Victorian staircases — we use a combination of brush sizes, including 12mm and 25mm brushes for getting into recesses. On very elaborate profiles, we sometimes use a lint-free cloth to work paint into the deepest turns rather than trying to load paint into them from a brush.

Metal spindles with flat or square section may be more straightforward in terms of profile but need particular attention at the points where they meet the handrail and the tread — these joints accumulate old paint and can trap moisture if not properly addressed.

A Note on Colour and Finish for Spindles

It's common to paint spindles the same colour as the handrail, particularly if both are metal. For timber staircases with a painted newel post and handrail in one colour and spindles in another — say, white or cream spindles against a darker handrail — the result can be very attractive but requires neat, precise cutting in at each junction point. It adds time to the job but the visual effect is worth it.

If you're planning to repaint a spiral or curved staircase, or if you have a recently installed staircase that needs its first professional paint job, we'd be happy to visit and give you a detailed quotation. These are jobs we enjoy — the results are immediately visible and highly satisfying.