Surface defects
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The document discusses surface defects that can occur when preparing surfaces for decoration, including efflorescence, cissing, flaking, bittiness, runs, sags, curtains, and mold. It identifies the causes of surface defects as poor workmanship, inadequate tools and materials, and the environment. The document also explains how to recognize and rectify common surface defects.
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Surface defects
- 1. Level 1 Diploma in Painting and Decorating © 2013 City and Guilds of London Institute. All rights reserved. 1 of 5 PowerPoint presentationSurface defects Unit 117: Preparing surfaces for decoration
- 2. Level 1 Diploma in Painting and Decorating © 2013 City and Guilds of London Institute. All rights reserved. 2 of 5 What causes surface defects? • Poor workmanship • Inadequate tools, equipment and materials • The environment
- 3. Level 1 Diploma in Painting and Decorating © 2013 City and Guilds of London Institute. All rights reserved. 3 of 5 Identifying surface defects • Efflorescence • Cissing • Flaking • Bittiness • Runs, sags and curtains • Mould Which ones can you recognise? Photo used with permission from Hobbico, Inc.
- 4. Level 1 Diploma in Painting and Decorating © 2013 City and Guilds of London Institute. All rights reserved. 4 of 5 Rectifying surface defects How do you rectify the following surface defects? • Effloresence • Cissing • Flaking • Bittiness • Runs • Mould
- 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?