What to Check Before Painting Metal Building Panels

What to Check Before Painting Metal Building Panels
Pro Painter USA Logo
MILWAUKEE WI, USA,

Metal panels can often be repainted, but only if the surface is sound and clean.

Key Takeaways

  • Inspect for chalking, rust and failed coating.
  • Wash and prime before painting.
  • Plan access and phasing.
  • Pick coatings suited to metal.

What to look for

Look at edges, seams and fasteners for rust. Check panels for dents and failed paint.

  • Chalking and fading
  • Rust at edges, seams and fasteners
  • Dents and failed coating
  • Panel and trim condition

Preparation

Wash, remove loose coating, treat rust and prime bare metal. A finish coat only lasts on a sound base.

  • Wash and rinse
  • Remove loose coating and treat rust
  • Prime bare metal
  • Seal where appropriate

Planning

Large buildings are often phased. Plan lifts, protection and temperature windows.

  • Temperature range for the coating
  • Lift or scaffold access
  • Phasing across a large building

Metal panels fail in predictable ways. Fading and chalking come first, then rust at edges and fasteners. Repainting works best before failure reaches bare metal across many panels.

Preparation is the biggest factor. Washing, rust treatment and priming are what make the finish coat last.

Pro Painter USA

Pro Painter USA inspects commercial metal siding and writes scopes for cleaning, preparation and painting. Before you call, note the areas involved, your target dates and anything that must stay open or untouched.

A proper inspection finds the rust and failed coating before they appear in the estimate. Request an exterior assessment with Pro Painter USA.

Frequently Asked Questions

Can chalky panels be painted?

Yes, after cleaning. Chalk left on the surface prevents adhesion.

How do you handle rust?

By removing loose material, treating the area and priming before painting.

Do all metal panels need priming?

Bare or repaired areas do. The coating system should follow the manufacturer's guidance.

Is rust a paint problem?

Surface rust can be treated. Rust that has eaten through is a repair issue.

You might find these helpful:

No items found.
CONTACT US

Get in touch with our team today

We are a team of interior and exterior painters and we are not limited to house painting only. We can paint different businesses like retail shops, commercial buildings, and apartments.

We also provide restaurant painting services. We can give you more information about these services if you give us a call.