The document discusses preparing surfaces for painting and decoration. It covers why surfaces need preparation, tools and equipment used, removing old paint systems using hot air guns or chemical strippers, different types of abrasive papers used to smooth surfaces, common defects found in surfaces like knots, cracks and stains, and how to clean surfaces by removing contaminants such as grease, dust and old paste. The document is about preparing surfaces for painting and decoration as part of the Level 1 Diploma in Painting and Decorating.

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PowerPoint
presentationPreparation tools and equipment
Unit 117: Preparing surfaces for decoration

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Why do we prepare surfaces?
Precautions when preparing surfaces
• Health and Safety
• Risk assessments
• Protection
• PPE

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Tools and equipment used for preparation
What tools and equipment are used when preparing surfaces?
Can you think of any?

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Removing old paint systems
Decorators have to remove paint by using:
• A hot air gun
• Liquid chemical stripper
What else could a decorator use to strip paint?

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Abrasive papers
Abrasive papers come in different types and grades:
• Aluminium oxide
• Silicone carbide
• Glass paper
• Grades range from P40 to P240 and higher
• The lower the number the rougher the paper

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Common defects
These defects are found in timber, metal and plaster surfaces:
• Knots, splits, open joints, resin exudation, end grain, corrosion,
settlement cracks, shrinkage cracks, nail holes, nail heads, stains
How would you rectify or repair these?

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Surface contamination
What are surface contaminates?
• Grease
• Dust
• Dirt
• Old paste
• Silicone
How would you clean and remove these?

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Any questions?