Slate Black Patina

Slate Black Patina is a versatile and unique finish for use on iron, steel, stainless steel, aluminum, bronze, brass, and copper.

Slate Black is meant to be a cold patina except when applied to aluminum and stainless steel, when it should be applied hot.


Slate Black Patina applied cold to bronze casting resin
L to R: polished, burnished, and unaltered patina


Slate Black Patina applied hot to aluminum and stainless steel

Before applying this patina, sandblasting or sanding is required to clean the surface of oil, oxides, and residues. Apply this patina as a spray or in an immersion process. Depending on the application method chosen, the results will range from a uniform solid color to a layered textured appearance. Slate Black Patina may be diluted up to 50% with distilled water depending on the desired strength of finish.

A clean water rinse will stop the chemical reaction. The finish may be burnished wet or dry. Additional patinas can be layered over this base. When dry, protect the finish with multiple coats of a clear sealer.


Slate Black Patina applied cold to copper


Slate Black Patina applied cold to rolled steel