Paint metal garage doors and roller shutters

Large exterior metal doors and shutters

Guide to repainting metal garage doors and roller shutters

Metal garage doors and roller shutters are wide, visible surfaces with folds, edges and moving profiles. A clean surface, careful masking and the right coating format help the finish look even without loading hinges, slats or edges with too much paint.

What do you need to repaint metal garage doors and roller shutters?

Cleaning and degreasing

Mipa silicone remover in liquid or spray format removes grease, wax, silicone and handling dirt before sanding and coating. The liquid format suits large panels, while the spray helps around profiles and edges.

Small aerosol repairs

Mipa DS 4 in 1 Spray gives a compact method for prepared chips, scratches and small edge repairs on suitable metal surfaces before the wider door finish is handled.

2K PU semi-gloss door coating

Mipa PU 250-50 with Mipa PUR Plus Hardener A60 and Mipa 2K Thinner Normal V 25 gives the specified semi-gloss 2K PU coating method for larger garage doors and shutters.

Colour group selection

Mipa PU 250-50 price groups I, II and III are the specified colour group rows for the same 2K PU coating role. Use the group that matches the required final shade.

How to repaint metal garage doors and roller shutters

1
Clean the door surface

Remove traffic film, hand grease and silicone residue with Mipa silicone remover before sanding or applying any coating.
2
Key panels and folded edges

Abrade glossy panels, shutter slats and folded borders evenly. Remove sanding dust from seams so paint does not collect in dirty profiles.
3
Mask tracks and moving parts

Keep tracks, seals, hinges and roller areas free from coating build so the door or shutter can still move cleanly after refinishing.
4
Coat the repaired areas

Use Mipa DS 4 in 1 Spray for small prepared spots or apply Mipa PU 250-50 with A60 hardener and V25 thinner across larger visible sections.
5
Control drying and movement

Let the coating dry without closing wet edges against seals or rolling fresh paint into the shutter mechanism.

Which garage door coating method should you choose?

Use aerosol for small defects

Choose Mipa DS 4 in 1 Spray for prepared chips, corners and short scratches where a small aerosol repair is enough.

Use PU 250-50 for full door faces

Choose the 2K PU semi-gloss method for broad garage door panels, roller shutter faces and repeated slats where one even finish matters.

Keep moving profiles light

Apply controlled coats around joints and rolled edges. Too much build can look heavy and may interfere with moving sections.

Technical details

Mipa DS 4 in 1 Spray gives a compact aerosol repair option for prepared chips, scratches and edges on suitable substrates.
Mipa PU 250-50 provides the 2K PU semi-gloss finish for larger prepared garage door and roller shutter surfaces.
Use Mipa PUR Plus Hardener A60 and Mipa 2K Thinner Normal V 25 with PU 250-50 so the 2K coating can be applied and cured correctly.
Silicone remover in liquid or spray format cleans large panels, profiles and edges before sanding or coating.

Practical suggestion

Paint garage doors and shutters in a position that lets edges dry freely. Keep coating out of tracks and contact points so the fresh finish is not damaged the first time the door moves.