Finishing Brass Lighting Fixtures: Patina, Powder Coating, and Color Matching

When a restoration project requires matching a brass fixture finish to what's already in a building, the question isn't about style. It's about what happens after fabrication. The finishing department handles that.

How Finishes Are Applied

Every brass fixture that leaves our Floyd, Virginia workshop goes through a finishing sequence. The base metal is satined or polished depending on the specification. Patina is applied by hand when the design calls for it. Clear lacquer follows to lock the finish in place.

This applies to fixtures in our standard line and custom commissions. The same finishing team works on both.

Patina Work

Patina gives brass its aged appearance. We apply it by hand using chemical treatments that produce controlled oxidation. The result depends on the chemical formulation and application time, not on the age of the fixture. A newly fabricated fixture can carry a 20-year-old patina if the project calls for it.

Common patina finishes we produce:

• Verdigris -- Green-blue oxidation typical of outdoor-exposed brass. Used when matching coastal or garden fixtures, or when the specification calls for aged exterior brass.
• Dark Patina -- Deep brown to near-black finish. Common on historical fixtures from the 1880s through 1920s. Frequently specified for courthouse and university restorations.
• Light Patina -- Warm golden-brown with visible brass undertones. The most common finish for standard orders and moderate restoration work.

Powder Coating

When a project calls for a color that brass alone can't produce, powder coating fills the gap. We apply powder coats in our finishing department -- not at an external vendor. The fixture enters the finishing department as fabricated brass and leaves with the final surface intact.

Powder coating is electrostatic. The brass fixture is grounded, charged powder particles are sprayed onto it, and heat in an oven cures the coating into a hard surface. This produces a finish that holds better than spray paint and doesn't chip under normal use.

Common applications:

• Custom color matching to existing architectural finishes
• Period-appropriate paint finishes for restoration projects
• Contrast finishes on mixed-material fixtures (brass with painted elements)

Color Matching for Restoration

Restoration projects often require matching a finish that doesn't appear in standard paint or powder catalogs. We handle this by working from a physical sample -- a photo alone usually isn't enough for accurate matching.

When we receive a sample, the finishing team evaluates it under controlled lighting, identifies the undertones, and produces a test piece. We send photos of the test piece for approval before committing to the full order. For critical matches, we ship the test piece to the project site to verify against the existing finish in situ.

Lacquer Seal

After the finish -- patina, powder coat, or polished bare brass -- a clear lacquer coat seals it. This protects the surface from oxidation, fingerprints, and normal wear. Without lacquer, a patina finish continues to oxidize and will shift in color within months of installation.

The lacquer layer is thin enough that it doesn't change the appearance of the finish underneath. It's there to hold what the finishing team has produced.

What This Means for Your Project

If you're specifying lighting for a restoration, or if your project requires matching finishes to existing fixtures, we can replicate them. The finishing department produces patina, powder coat, and bare finishes on every order -- not just custom commissions.

Send us a photo of the existing fixture or a sample if you have one. We'll produce a test piece and show you how it matches before fabrication begins.

Contact us to discuss your project: Contact Crenshaw Lighting