1. Introduction
Just 24 hours ago, a major storm system swept across the Midwest, causing widespread damage to commercial and residential structures—especially those with exposed metal clad roofing and facades. Reports from Illinois and Indiana highlighted premature corrosion on zinc clad dormers and loosened standing seam siding on metal clad buildings. With extreme weather becoming more common, knowing how to maintain and troubleshoot metal clad systems is no longer optional—it’s essential.
Whether you’re working with a steel clad house, a corrugated steel facade, or aluminum clad pipe insulation, this guide gives you actionable fixes for the seven most common metal clad problems. No fluff—just practical steps you can take today.
2. Rust and Corrosion on Metal Clad Surfaces
Rust is the arch-nemesis of any metal clad structure, especially when using mild steel plate or uncoated corten steel siding.
- Inspect your metal clad wall or roof for flaking paint, reddish spots, or white powdery residue (a sign of zinc corrosion).
- Light rust: Sand the area with 120-grit paper, apply a rust converter, then prime and repaint with a high-quality metal paint.
- For corten steel siding cost concerns, remember: true corten is designed to rust—but only to a stable, protective layer. If rust is flaking, it’s likely not genuine corten or was improperly installed.
3. Loose or Leaking Metal Clad Roof Panels
Standing seam metal siding and pac clad standing seam roofs are durable—but fasteners can loosen over time, especially in high-wind zones.
- Check for lifted seams or wobbling panels after storms.
- Tighten fasteners using a torque-limiting tool to avoid over-compression.
- Replace damaged pac clad coping or column covers if water is pooling near edges.
- Consider upgrading to colorbond standing seam for better weather resistance in coastal areas.
4. Paint Peeling on Metal Clad Windows and Trim
Metal clad window trim and doors often suffer from UV damage and moisture intrusion.
- Remove all loose paint with a scraper and wire brush.
- Clean with TSP (trisodium phosphate) solution, rinse, and let dry completely.
- Use a metal-specific primer before applying exterior-grade acrylic paint.
- Never skip priming—even on aluminum clad steel or stainless clad aluminum surfaces.
5. Electrical and Safety Issues with Metal Clad Wiring
Metal clad electrical wire (like aluminum clad steel wire or cu clad wire) is common in commercial builds—but improper handling causes hazards.
- Always use listed MC cable connectors when attaching to junction boxes.
- In Pennsylvania and most U.S. states, metal clad wire can be used outdoors if rated for wet locations (look for ‘MC-HL’ or ‘MC-PCS’ markings).
- Never cut metal clad cable with standard pliers—use a rotary cable cutter to avoid nicking internal conductors.
6. Aesthetic Fading or Staining on Metal Facades
Zinc metal siding, copper siding, and corten steel plate develop patinas—but uneven discoloration looks unprofessional.
- For zinc clad roof or zinc clad dormer stains, rinse with distilled water and mild detergent. Avoid acid cleaners.
- Copper siding naturally turns green; if you prefer the original look, apply a clear lacquer (reapply every 2–3 years).
- On a steel facade with oil canning (wavy reflections), ensure panels were installed with proper expansion gaps.
7. Insulation and Condensation Behind Metal Clad Walls
Metal clad insulation failures often lead to mold or reduced energy efficiency—especially in sheds or metal clad buildings without vapor barriers.
- Check for gaps between the metal weatherboard and sheathing.
- Install closed-cell spray foam or aluminum clad pipe insulation behind corrugated metal siding to prevent thermal bridging.
- Ensure your metal clad shed has adequate ventilation—use ridge vents or soffit perforations.
8. Choosing the Right Clad Metal Type for Repairs
Not all clad metals are equal. Understanding clad metal meaning helps you match replacements correctly.
- Aluminum clad stainless steel is ideal for coastal environments.
- Titanium clad or inconel 625 overlay suits high-heat industrial uses.
- For DIY home projects, 2024 T3 clad or 7075 T6 clad aluminum sheets offer strength and corrosion resistance.
- When sourcing steel plate near me, confirm the grade: 316 stainless steel plate for marine exposure, A36 for structural base plates.
9. Conclusion
Metal clad systems—whether it’s a zinc facade, standing seam siding, or steel clad building—offer durability and modern aesthetics. But they demand smart maintenance. By addressing rust early, securing seams, using proper wiring practices, and selecting the right clad metal type, you’ll extend your structure’s life and curb appeal. Don’t wait for the next storm—inspect your metal clad house today.
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