Common Powder Coating Defects
Powder coatings aren’t just functional—they can be visually striking. This section examines the various finishes, textures, and special effects available to create the perfect look.
(800 Yards from Junction 6 M6 Spaghetti Junction)
What are common powder coating defects?
Typical defects include orange peel, bubbling, cracking, flaking, runs, sags, and poor adhesion.
Most defects are caused by contamination, poor surface preparation, or incorrect curing.
Why does powder coating blister or bubble?
Blisters form when trapped moisture, oil, or air escapes during curing.
Proper degreasing and drying prevent this issue.
What causes orange peel in powder coating?
Orange peel occurs when powder melts unevenly or is applied too thickly.
Correct gun settings and curing temperatures reduce this effect.
How do I prevent dust or contamination in coatings?
Maintain a clean coating environment, store powders properly, and pre-clean parts.
Dust-free benches, filtered air, and regular cleaning are essential.
What effect does corrosion on the surface of the coated part have?
Corrosion under the coating causes bubbling, flaking, and premature failure.
Proper pre-treatment and rust removal prevent this problem.
Why does powder coating peel or flake?
Peeling results from poor adhesion, contamination, or under-curing.
Correct surface preparation and curing ensure a strong bond.
Can powder coating fade in sunlight?
Yes, UV exposure can slowly fade some powders.
UV-resistant powders and proper maintenance preserve colour longer.
How does surface preparation prevent defects?
Clean, degreased, and pre-treated surfaces promote adhesion and uniform coverage.
Proper preparation minimises peeling, bubbling, and uneven textures.
How do I fix minor powder coating defects?
Small defects can be sanded and spot-coated, then cured again.
Severe defects may require stripping and recoating the part.
What role does curing play in defect prevention?
Curing melts and bonds the powder fully to the surface, creating a strong, defect-free finish.
Incorrect curing causes soft spots, poor adhesion, and aesthetic issues.
Powder Coatings Ltd - Established over 50 years. ISO 9001 Approved Quality Systems.
Established over 50 years — Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years — Central location, Junction 6 M6 Spaghetti - ISO 9001 Approved quality systems — Established over 50 years - Central location, Junction 6 M6 Spaghetti — Established over 50 years - Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years — Central location, Junction 6 M6 Spaghetti - ISO 9001 Approved quality systems — Established over 50 years - Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years — Central location, Junction 6 M6 Spaghetti - ISO 9001 Approved quality systems — Established over 50 years - Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years — Central location, Junction 6 M6 Spaghetti - ISO 9001 Approved quality systems — Established over 50 years - Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years — Central location, Junction 6 M6 Spaghetti - ISO 9001 Approved quality systems — Established over 50 years - Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years — Central location, Junction 6 M6 Spaghetti - ISO 9001 Approved quality systems — Established over 50 years - Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years — Central location, Junction 6 M6 Spaghetti - ISO 9001 Approved quality systems — Established over 50 years - Central location, Junction 6 M6 Spaghetti — ISO 9001 Approved quality systems - Established over 50 years
Address
215 Tyburn Road, Erdington,
B'ham B24 8NB See Location
Hours
Mon to Thurs 7am till 4pm
Fri 7am till Midday
Email & Web
roger@powder-coatings.co.uk
www.powder-coatings.co.uk