Paint construction machine panels

Guided machine coating

Guide to painting construction machine panels

Construction machine panels need a clean, keyed and compatible coating build before they return to industrial use. Construction panels are exposed to mud, abrasion, pressure washing, impact marks and outdoor weather, so preparation has to be practical and thorough. The specified Mipa products provide cleaning, surface preparation, epoxy primer, semi gloss 2K polyurethane topcoat and small repair options.

What do you need to paint construction machine panels?

Cleaning and degreasing

Mipa silicone remover in liquid or spray format removes wax, grease and silicone before sanding, primer or topcoat work. Clean panels make the next layer bond to the surface instead of to contamination.

Surface keying

MP Non-woven Sanding Pad Very Fine keys stable old coating and smooth metal areas without creating deep sanding marks. It is useful on covers, bends, edges and recessed details.

Epoxy corrosion primer

Mipa EP 100-20 with Mipa EP 950-25 hardener and Mipa EP Thinner creates the primer foundation for steel, aluminium or zinc coated panels on construction equipment. It helps the topcoat sit on a controlled 2K primer layer rather than on questionable bare or aged metal.

Semi gloss machine topcoat

Mipa PU 250-50 is a 2K polyurethane acrylic semi gloss topcoat for high quality coatings on facades, machines and constructions. It is especially practical when brush or roller application is useful alongside spray work.

Topcoat hardener and thinner

Mipa PUR Plus Hardener A60 and Mipa 2K Thinner Normal V 25 complete the PU 250-50 stage. The hardener controls curing and the thinner helps the material flow through the chosen application method.

Small aerosol repairs

Mipa 2K-PU-Industry-Prefilled Spray can be filled with compatible PU 250 or PU 265 material for small local colour repairs in a 400 ml activated aerosol format. It is useful for edges, covers and isolated touch ups where a spray gun would be disproportionate.

How to paint construction machine panels

  1. 1
    Clean before judging the surface

    Remove dust, oil, fingerprints and workshop contamination first, then inspect the housing for bare metal, loose coating, scratches and corrosion.

  2. 2
    Degrease and abrade

    Use Mipa silicone remover before abrasive work, key stable areas with the non-woven pad, then clean again so sanding dust and grease are not trapped under primer.

  3. 3
    Prime bare or exposed areas

    Apply Mipa EP 100-20 with its EP hardener and thinner where a controlled epoxy primer foundation is needed for adhesion and corrosion protection.

  4. 4
    Apply the semi gloss finish

    Coat with Mipa PU 250-50 and the specified hardener and thinner, keeping film build even around edges, vents, brackets and removable covers.

  5. 5
    Leave the coating to cure

    Allow the 2K coating to cure before reassembly, transport or handling. Fresh coating can mark easily around bolt heads and panel edges when parts are handled too soon.

Which products should you choose for construction machine panels?

For outer machine panels

Use PU 250-50 on exterior covers and panels where a semi gloss industrial finish is needed after cleaning, keying and primer work.

For chipped edges and exposed metal

Use EP 100-20 on exposed metal before the topcoat, especially where edges, brackets and panel corners have lost coating.

For small field repairs

Use the prefilled 2K-PU aerosol method for local colour repairs on covers and smaller panels after proper preparation.

Technical details

  • Mipa PU 250-50 is a 2K polyurethane acrylic semi gloss topcoat for machines, facades and constructions.
  • PU 250-50 is suitable for brush and roller application and uses Mipa PUR Plus Hardener A60 at 10:1 by weight and 8:1 by volume.
  • Mipa EP 100-20 is specified for steel, zinc coated steel, aluminium, fibreglass and mineral substrates.
  • Mipa 2K-PU-Industry-Prefilled Spray is compatible with PU 250-XX and PU 265-XX material for small activated aerosol repairs.
  • Remove cement dust, mud, grease and hydraulic oil residue completely before sanding and coating because these contaminants can weaken adhesion.
Practical suggestion

Pay extra attention to lower panel edges and bolt holes. They collect dirt and moisture, so a quick cosmetic pass will not last there.

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