Defects

1. Level 1 Diploma in Painting and Decorating
© 2013 City and Guilds of London Institute. All rights reserved. 1 of 5
PowerPoint
presentationPost-application defects
Unit 118: Applying paint systems by brush and
roller to non-complex areas

2. Level 1 Diploma in Painting and Decorating
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Common post-application paint defects
On the following slide there is a list of post application defects. In
groups, find the causes and remedies of each defect.
Points are scored for each correct cause and remedy – bonus points
are available.

3. Level 1 Diploma in Painting and Decorating
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Common post-application defects
• Cissing
• Runs, sags and curtains
• Blistering
• Orange peel
• Misses
• Wrinkling
• Brush marks
• Grinning
• Skid marks
• Paint on adjacent surfaces
Photo used with permission from
Hobbico, Inc.

4. Level 1 Diploma in Painting and Decorating
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Common post-application defects (answers)
• Cissing: Grease/polish. Sand down and repaint.
• Runs, sags and curtains: Paint too thin or think. Sand down and
repaint.
• Blistering: Painting in direct sunlight. Remove with heat gun.
• Orange peel: Caused by heavy rollering. Lay off after application.
• Misses: Areas missed. Repaint when dry.
• Wrinkling: Previous coating not fully dry. Sand down and repaint.
• Brush marks: Poor application. Sand down and repaint.
• Grinning: Poor coverage. Recoat when dry.
• Skid marks: Heavy rollering. Lay off after application.
• Paint on adjacent surfaces: Poor workmanship. Take care when
applying paint.

5. Level 1 Diploma in Painting and Decorating
© 2013 City and Guilds of London Institute. All rights reserved. 5 of 5
Any questions?

6. Level 1 Diploma in Painting and Decorating
© 2013 City and Guilds of London Institute. All rights reserved. 5 of 5
Any questions?