Finish selection is where a lot of interior metalwork decisions get left to the last minute. This is a working guide to the finishes we apply most often, and what’s worth knowing about each.
Powder coat
The most common finish for mild steel interior metalwork. Powder coat is durable, available in virtually any colour, and provides consistent coverage across complex forms.
Things to know: colour consistency across batches can vary slightly, so specify a RAL or Dulux code rather than describing a colour.
Brushed stainless
The default finish on 304 or 316 stainless for interior use. It diffuses reflections and handles fingerprints reasonably well. The directionality of the brush matters.
316 grade is preferred in coastal environments or anywhere with ongoing moisture exposure.
Polished stainless
A mirror or near-mirror polish dramatically changes the character of a piece. It reflects the room rather than sitting within it.
For interior handrails and balustrades we’d generally recommend brushed unless there’s a specific design intent for polished.
Patinated brass
Brass is having an extended moment in high-end residential interiors. The question is whether to apply a patination or leave it to develop naturally.
Applied patination gives you a specific colour and texture at handover. For anything in regular contact, a clear lacquer or wax finish over a specified patination is more reliable.
Raw or lightly oiled mild steel
Raw mild steel is used occasionally for interior elements where the brief calls for an industrial or unfinished aesthetic. We typically apply a clear wax or oil finish as a minimum.
This finish requires maintenance. It’s not a fit-and-forget option.
Corten
Corten develops a stable rust patina over time. For interior use it appears in feature walls, room dividers and decorative screens.
The rust process continues for several years. The surface will transfer colour to adjacent materials if in contact.
Getting samples before you specify
We can produce sample pieces in any finish we offer. The same finish reads very differently under different lighting conditions.
If you’re working on a project and want to see finish samples, get in touch.