Understanding Your Metal Pieces

Custom fabricated metal pieces can be crafted from a variety of materials, each with distinct characteristics and maintenance needs. The most common metals used in custom fabrication include:

  • Steel (carbon steel) – Strong and durable but prone to rust if not properly coated. Often used for structural elements and outdoor art.
  • Stainless steel – Resistant to corrosion due to chromium content, but can still suffer from pitting in humid environments. Common for modern furniture and kitchen fixtures.
  • Aluminum – Lightweight and naturally corrosion-resistant due to a protective oxide layer. Ideal for outdoor pieces but can oxidize and discolor over time without care.
  • Copper and brass – Develop a natural patina over time, which many find desirable. However, they can tarnish or turn green with prolonged exposure.
  • Wrought iron – Classic and ornamental, but highly susceptible to rust. Requires vigilant protective coatings.

Identifying the exact metal type in your piece is the first step toward a proper care routine. Learn how to identify common metal alloys to match your maintenance approach.

Regular Cleaning Tips

Dust, pollen, bird droppings, and industrial fallout are common in Nashville’s urban and suburban areas. Regular cleaning prevents these contaminants from bonding with the metal surface.

  • Dust weekly using a microfiber cloth or a soft-bristle brush. This is especially important for intricate pieces with crevices.
  • For routine washing, mix a mild dish soap (like Dawn) with warm water. Apply with a soft sponge or cloth, then rinse thoroughly with clean water. Avoid high-pressure washers that can force water into sealed seams.
  • For aluminum and stainless steel, use a dedicated cleaner to restore shine without scratching. For copper or brass, use a gentle polish designed for that metal.
  • Always dry the piece completely with a soft, lint-free cloth. Leftover moisture is the number one cause of water spots and early corrosion.
  • Never use abrasive scouring pads, steel wool (except on heavy rust), or harsh chemical cleaners that contain bleach, ammonia, or acids.

For outdoor pieces, consider cleaning more frequently during Nashville’s rainy spring and fall when dirt accumulates faster.

Protection Against Nashville's Climate

Nashville’s humid subtropical climate combines high humidity, heavy rainfall, temperature swings, and occasional hailstorms. These factors accelerate corrosion, especially for metals that are not stainless steel or properly coated.

Humidity and Moisture

Humidity levels often exceed 70% in summer. Moisture condenses on metal surfaces, promoting electrochemical corrosion. To mitigate this:

  • Apply a clear lacquer or polyurethane sealant designed for outdoor metal. Reapply every 1–2 years as needed.
  • For steel and iron, consider a rust-inhibiting primer before painting or powder coating. Rust-Oleum’s Stops Rust systems are popular for DIY maintenance.
  • Use carnauba wax on polished metals like stainless steel or aluminum to create a hydrophobic barrier.
  • Place outdoor pieces in covered patios, beneath eaves, or under waterproof covers during extreme weather.

Sun and UV Exposure

Intense summer sun can fade powder coatings and baked-on paint finishes. If your piece has a painted finish, consider a UV-resistant clear topcoat. For uncoated copper or brass, the sun accelerates patina formation, which some owners want to control by applying a wax barrier.

Temperature Fluctuations

Rapid temperature changes from hot days to cool nights cause metal expansion and contraction. This can stress welds, fasteners, and joints. For large installations like gates or railings, check bolts and hinges twice a year and tighten as needed. Apply a thin coat of silicone spray to moving parts to reduce friction.

Winter and Deicer Risks

During icy conditions, deicing salts and calcium chloride tracked from roads can splash onto metal pieces, causing serious corrosion. Wash affected areas immediately after thaws. For pieces near driveways or walkways, consider a sacrificial wax coating that can be reapplied each winter.

Rust and Corrosion: Prevention and Treatment

Even with the best care, rust can appear, especially on steel or iron. Early detection is key.

Prevention

  • Inspect metal pieces monthly for any small orange or brown spots. Catching them early saves time and money.
  • Keep metal away from sprinkler heads and downspouts. Redirect rainwater drainage away from baseplates.
  • For indoor pieces, maintain indoor humidity below 50% using dehumidifiers if necessary, especially in basements or workshops.

Treatment

  • For light surface rust on steel or iron, gently rub with fine-grade steel wool (#0000) or a brass-bristle brush, then wipe clean and apply a rust converter primer. Follow with touch-up paint.
  • For stainless steel, use a stainless steel cleaner/polish that removes surface rust without scratching. Avoid steel wool on stainless as it can embed particles that later rust.
  • For severe corrosion (pitting, through-rust), or if the piece is structural, consult a professional fabricator. They can cut out damaged sections and weld in new metal, then refinish.

Detailed step-by-step guides are available from the National Galvanizers Association for galvanized steel care.

Handling and Storage

Even sturdy metal can be damaged by improper handling.

  • Always wear clean cotton or nitrile gloves when touching polished or raw metal – skin oils can etch the finish over time.
  • When moving large pieces, wrap them in furniture moving blankets and secure with straps to prevent scratching.
  • Store pieces in a climate-controlled space. If outdoor storage is necessary, use breathable fabric covers (not plastic, which traps moisture) and place the piece on a pallet or concrete blocks to avoid ground contact.
  • For flatware or small decorative items, store in soft pouches or separate drawers to prevent rubbing against each other.

Professional Maintenance and Restoration

Some pieces are too valuable, intricate, or heavily corroded for DIY care. Professional metal restorers offer:

  • Chemical stripping to remove old paint, rust, and sealants without damaging the base metal.
  • Welding and metal replacement for structural repairs.
  • Powder coating or hot-dip galvanizing for long-term protection.
  • Patina application or removal on copper, brass, and bronze to achieve a specific look.

Nashville has several reputable metal fabrication and restoration shops. Seek referrals from local artists or architecture firms. When hiring, ask about their experience with your specific metal type and finish.

Inspection and Early Intervention

Create a seasonal maintenance schedule:

  • Spring: Clean thoroughly after winter, check for new rust or damage from freeze-thaw cycles, and reapply protective wax or sealant if needed.
  • Summer: Rinse frequently to remove pollen and dust, and lubricate moving parts (hinges, sliding tracks) with a dry lubricant like graphite or silicone.
  • Fall: Clear leaves and debris that trap moisture, and apply a final protective coating before winter rains begin.
  • Winter: Inspect monthly for salt spray or water accumulation. Dry immediately after any rain.

Common Mistakes to Avoid

  • Over-cleaning: Excessive polishing can strip protective coatings and thin the metal over time.
  • Using vinegar or lemon juice on unsealed metals: These acids can etch and discolor, especially on brass and aluminum.
  • Placing metal directly on concrete: Concrete absorbs moisture and transfers it to metal, accelerating rust.
  • Neglecting fasteners: Rust on bolts and screws can spread to the main piece. Replace galvanized hardware with stainless steel when possible.

Conclusion

Proper care and maintenance of your custom fabricated metal pieces ensure they remain beautiful and durable for years to come. Nashville’s unique climate demands a proactive approach: regular cleaning with mild methods, protective sealants suited to the metal, seasonal inspections, and prompt treatment of any signs of corrosion. By understanding your metal’s specific needs and creating a simple maintenance routine, you protect your investment and enjoy the character of your metal art and fixtures. When in doubt, consult a professional – especially for historic or high-value pieces. With attention and care, your Nashville metal pieces will withstand the elements and continue to enhance your home or business for decades.