Metal Finishes

The finish is the part everyone sees and the part most projects decide last. It is also the decision that quietly sets how the metalwork ages, what it costs to keep, and whether it still looks deliberate in ten years. This is how we choose one.

If you already know the metal you want, the materials guide is the better starting point. If you know roughly what you want it to look like and need to know what will survive where you are putting it, start here.

Where does it live? That answers most of it

Almost every finish mistake we get called about is the same mistake: an interior finish specified for an exterior job. Blackened steel, waxed steel, raw mill scale, mirror stainless and unlacquered brass all look superb indoors. Put them outside on the North Shore and you are signing up for maintenance you did not budget for, or rust.

Three lines that will save you a conversation:

• Interior — everything on this page is available to you. Choose on looks and on how much handling the piece will take.
• Exterior, inland — powder coat, corten, or 304 stainless. Anything else needs a coating over it and a maintenance plan under it.
• Coastal — hot-dip galvanized then powder coated, or 316 stainless. There is no third answer we will stand behind within sight of salt water.

The six families

Every finish name you have come across belongs to one of these. The colour words on a supplier chart multiply endlessly; the processes underneath do not.

Powder coat

Colour, cured on. Any RAL number, in matte, satin, gloss or texture, and it repeats exactly the next time you order. It is the toughest finish per dollar we can put on steel or aluminum and the right default for anything outdoors. Full detail on powder coating and RAL colours.

Blackened and chemically darkened steel

A chemical conversion in the surface of the steel itself, sealed with wax or oil. Darker and more alive than black paint, and it wears through at the edges the way a well-used tool does. Interior only. See blackened steel.

Patina

Applied and accelerated ageing on steel, brass, bronze or copper. Black, brown, blue or verdigris green. Every panel comes out slightly different, which is either the reason you want it or the reason you should not. See patina finishes.

Raw and clear-coated steel

Mill scale, hot-rolled skin, waxed or lacquered bare steel. The most honest finish there is and the least forgiving, because there is nothing between the steel and the room. Covered on steel fabrication.

Solid brass, bronze and copper

Here the metal is the finish. Satin, brushed, burnished, antiqued or left to go where it goes. We use solid stock, never plated, so the surface can be reworked in twenty years instead of replaced. Covered on brass fabrication.

Stainless mechanical finishes

Ground into the surface rather than applied to it: No.4 brushed, hairline, No.8 mirror, bead-blasted. The grain direction matters as much as the grade, and it has to be agreed before fabrication, not after. Covered on stainless steel fabrication.

What the finish will cost you, in order

We will not quote a finish without knowing the piece, because the cost is driven by surface area, access and how much hand work the surface needs. But the ranking below holds on almost every job, cheapest first:

1. Raw and clear-coated steel — almost no added process.
2. Powder coat, standard colour — one trip to the coater.
3. Powder coat, custom RAL or texture — same process, longer lead time.
4. Galvanized then powder coated — two processes, two lead times.
5. Blackened or patinated steel — hand work, and the piece has to come back to us.
6. Brushed or bead-blasted stainless — hand finishing on a more expensive metal.
7. Solid brass or bronze, any finish — the material dominates the cost.
8. Mirror-polished stainless — the most labour of anything we do.

For what the finished item costs rather than the finish alone, see the pricing guides.

Specifying a finish, for designers and architects

A finish call-out that a shop can actually build against needs four things. Give us these and we will not come back with questions:

• The process, not the colour word. “Dark bronze” is a colour. “RAL 8019, fine texture, matte” is a specification. So is “chemically blackened, waxed”.
• The base metal and grade. The same finish behaves differently on 304 and 316, and on steel versus aluminum.
• Grain direction, on any brushed or hairline surface. Vertical on posts, horizontal on rails, is the usual answer, but it should be stated.
• Whether you want a sample first. On anything hand-finished we would rather make you a sample and agree it than argue about it after install.

We work regularly with interior designers and landscape architects and are happy to be brought in at drawing stage rather than after tender.

Finishes by product

Each product page lists the finishes that actually suit that item, with the reasons: railings, gates, planters, privacy screens, decorative screens, wine walls, metal furniture and fireplace surrounds.

Free in-house consultation

We come to you, measure the site, and talk through options and budget before you commit to anything. Bring a photo of a finish you like and we will tell you honestly whether it will survive where you want to put it.

Call (778) 805-5333 or email sales@trussmetal.com