Brass plating can add a beautiful, golden finish to metals, hardware, and other surfaces. But over time, the unprotected brass may tarnish, fade, or show wear. Painting over brass plating provides protection and allows you to refresh the look with any color you desire. With proper preparation and technique, you can achieve a smooth, durable painted finish on your brass-plated surfaces.
Cleaning and Prepping the Brass Plating
Before attempting to paint over brass plating, take the time to thoroughly clean and prepare the surface. This crucial first step helps ensure proper paint adhesion and a blemish-free finish.
Remove Any Tarnish, Oxidation, or Residue
Over time, brass surfaces develop a patina and may tarnish or oxidize. Use a brass cleaner or mild detergent with warm water to scrub away any built-up residue or oxidation. For stubborn tarnish, try a paste made of salt, vinegar, and flour. Gently rub with a soft cloth, rinse thoroughly, and allow to fully dry. This removes any barrier between the brass and paint.
Sand the Surface Lightly
Once clean and dry, lightly sand the brass plating using a fine 400-600 grit sandpaper. This scuffs up the ultra-smooth surface so the primer and paint can grip better. Take care not to aggressively sand, which can remove the brass plating layer. Just a light scuffing is all that’s needed. Wipe away any dust with a tack cloth.
Degrease for Contaminant-Free Surface
Degrease the sanded brass with isopropyl alcohol, acetone, or other degreasing solvent. This eliminates any oily residues left behind from handling that could interfere with proper paint adhesion. Read all safety precautions before using any chemical degreasers. Allow the brass to dry fully.
Proper cleaning, sanding, and degreasing removes any contaminants that could cause paint failure down the road. It also gives “tooth” to help the paint bind tightly.
Priming the Surface
Before painting, it’s vital to apply a primer specifically formulated for metals. The primer forms a strong bond between the slick brass and the topcoat paint. Using the right metal primer will prevent peeling, chipping, or flaking of the paint.
Choose the Right Metal Primer
When priming over brass, reach for a metal primer designed for use on copper, brass, and other smooth metals. Oil-based metal primers provide excellent adhesion and durability. But water-based acrylic versions work well too while being lower odor and easier cleanup.
Apply in Thin, Even Coats
Read the product directions to apply the metal primer properly. In general, brush on thin, smooth coats allowing proper drying time between each. Thick globs can lead to uneven drying and drips in the finish. Two to three thin coats are better than one thick one.
Allow Proper Curing Time
Oil-based primers take up to 24 hours to fully cure. Water-based versions may dry to the touch in as little as 30 minutes but still need a few hours for full curing. Don’t rush this step. Proper curing prevents adhesion problems down the road.
With the right metal primer applied correctly, you can now move on to the fun part – choosing a paint color!
Selecting the Right Paint
You’ll want to use a paint specially engineered to bond to metals and hold up to the rigors of wear. Enamel paints are a top choice, while many all-surface spray paints also work well on metals.
Consider Oil or Water-Based Options
Oil-based enamel paints deliver unbeatable metal adhesion and a smooth, hard finish. But the fumes require proper ventilation during application. Water-based acrylic enamels offer lower fumes, easier cleanup, and fast dry times. Both work well on primed brass.
Match Paint to Your Needs
Think about the end use of the brass object when selecting paint. High-traffic areas benefit from industrial enamels in gloss or satin. For decorative objects, choose a rich gloss enamel. Spray paints provide quick full coverage for small brass items.
Buy the Right Amount
Check the coverage listed on the paint can or bottle and purchase enough for two full coats. It’s better to have too much than run out halfway through the job. You may also need more if spraying or rolling vs brush painting.
Choosing the right paint product formulated for metals will provide beautiful long-lasting color on your primed brass surfaces.
Application Tips for Smooth, Even Paint Coverage
The way you apply the paint makes a big difference in the final look. Follow these tips to get a flawless painted finish on brass plating:
Work in Thin, Multiple Coats
Thin coats of paint look best on brass. Thick paint has a tendency to run and sag. Lightly sand between coats for maximum adhesion. Allow proper drying time between coats as specified by the paint product.
Use Proper Brush Technique
Use high-quality synthetic bristle brushes made for painting metal. Dip just the tip in the paint and tap lightly against the can rim to remove excess. Brush on using smooth, even strokes in the same direction. Avoid rebrubbing while the paint is still wet, which can pull up paint and leave brush marks.
Consider Spraying Small Items
For small brass items, spray painting is faster and provides a smooth, even finish. Hold the can 6-10 inches from the surface and apply light coats. Let dry completely between coats. Use cardboard to shield any areas you don’t want painted.
Check for Full Coverage
Inspect the surface after each coat and look for any thin spots or visible primer peeking through. Cover these up with additional light coats until you achieve full, opaque coverage. Patience leads to a flawless painted finish.
Proper application produces professional paint results on brass plating. Take your time and don’t cut corners during the painting process.
Caring for Painted Brass Surfaces
Once your brass plating is beautifully painted, you’ll want the finish to last. Follow these maintenance tips to keep your painted brass surfaces looking fresh:
Allow Paint to Fully Cure Before Use
Oil-based paints take up to 2 weeks to fully harden and cure. Water-based versions can be used within a few days. Avoid regular handling or use until the paint has had time to reach maximum hardness and adhesion.
Consider Adding a Protective Clear Coat
For added protection on frequently handled brass items, apply a clear acrylic sealant over the painted finish. This adds a protective barrier against chips and scratches. Use an exterior grade sealant for brass used outdoors.
Clean with Gentle Products
Use only mild cleaners without harsh solvents to clean painted brass. Avoid abrasive pads or scrubbing that could wear through the finish. Use a soft cloth with mild soap and water instead. Rinse and dry well after cleaning.
Touch Up Paint as Needed
Check regularly for any chips or wearing through the paint. Spot paint these areas immediately with matching paint to prevent moisture damage or oxidation. Addressing it right away prevents bigger problems later.
Caring properly for your painted brass keeps it looking pristine and prevents you from having to strip and repaint anytime soon. With the right prep, primer, and application, your painted brass surfaces will maintain their beauty for years to come.
Final Thoughts
So don’t despair if your brass plating has seen better days. With a little elbow grease and the right painting techniques, you can give it new life in any color you desire. Just be sure to follow these essential tips for cleaning, priming, painting, and caring for brass plating. In no time, you’ll restore your brass items to a like-new finish that will impress.
References
[1] Hunter, Chris. “Can You Paint Brass?” Home Guides | SF Gate, 29 Nov. 2018, https://homeguides.sfgate.com/can-paint-brass-79761.html.
[2] “How to Paint Brass.” Rust-Oleum, 18 May 2022, https://www.rustoleum.com/how-to/paint/how-to-paint-brass/.
[3] “How to Paint Brass.” Hunker, https://www.hunker.com/13421715/how-to-paint-brass. Accessed 15 Feb. 2023.
[4] Zahn, Jodie. “How to Paint Metal Surfaces.” The Spruce, https://www.thespruce.com/how-to-paint-metal-surfaces-4067771. Accessed 15 Feb. 2023.
[5] “Painting Metal.” Benjamin Moore, https://www.benjaminmoore.com/en-us/paint-colors/painting-guides/painting-metal. Accessed 15 Feb. 2023.
[6] “How to Paint Metal Surfaces.” Rust-Oleum, 11 May 2022, https://www.rustoleum.com/how-to/paint/how-to-paint-metal-surfaces/.
[7] “How to Paint Brass.” WikiHow, 22 June 2022, https://www.wikihow.com/Paint-Brass.
[8] Leigh, Cheryl. “How to Paint Over Brass Hardware.” The Spruce, https://www.thespruce.com/how-to-paint-over-brass-hardware-1822008. Accessed 15 Feb. 2023.
[9] “Caring for Painted Metals.” Benjamin Moore, https://www.benjaminmoore.com/en-us/paint-colors/painting-guides/caring-for-painted-metals. Accessed 15 Feb. 2023.
[10] “How to Care for Painted Metal Surfaces.” Rust-Oleum, https://www.rustoleum.com/how-to/paint/how-to-care-for-painted-metal-surfaces/. Accessed 15 Feb. 2023.
