Hempel Internal Document
Preparation
400 Preparation generally
1. Standard: In accordance with BS 6150. 2. Refer to any pre-existing CDM Health and Safety File. 3. Refer to CDM Construction Phase Plan where applicable.
4. Suspected existing hazardous materials: Prepare risk assessments and method statements covering operations, disposal of waste, containment and reoccupation, and obtain approval before commencing work. 5. Preparation materials: Types recommended by their manufacturers and the coating manufacturer for the situation and surfaces being prepared. 6. Substrates: Sufficiently dry in depth to suit coating. 7. Efflorescence salts: Remove. 8. Dirt, grease and oil: Remove. Give notice if contamination of surfaces/ substrates has occurred. 9. Surface irregularities: Remove. 10. Joints, cracks, holes and other depressions: Fill flush with surface, to provide smooth finish. 11. Dust, particles and residues from preparation: Remove and dispose of safely. 12. Water based stoppers and fillers 12.1. Apply before priming unless recommended otherwise by manufacturer. 12.2. If applied after priming: Patch prime.
13. Oil based stoppers and fillers: Apply after priming. 14. Doors, opening windows and other moving parts 14.1. Ease, if necessary, before coating. 14.2. Prime resulting bare areas.
430 Existing ironmongery
1. Refurbishment: Remove old coating marks. Clean and polish.
440A
Previously coated surfaces generally
1. Preparation: In accordance with BS 6150. 2. Contaminated or hazardous surfaces: Give notice of: 2.1. Coatings suspected of containing lead. 2.2. Substrates suspected of containing asbestos or other hazardous materials. 2.3. Significant rot, corrosion or other degradation of substrates. 3. Suspected existing hazardous materials: Prepare risk assessments and method statements covering operations, disposal of waste, containment and reoccupation, and obtain approval before commencing work. 4. Removing coatings: Do not damage substrate and adjacent surfaces or adversely affect subsequent coatings. 5. Loose, flaking or otherwise defective areas: Carefully remove to a firm edge. 6. Alkali affected coatings: Completely remove. 7. Retained coatings 7.1. Thoroughly clean to remove dirt, grease and contaminants. 7.2. Gloss coated surfaces: Provide key. 8. Partly removed coatings 8.1. Additional preparatory coats: Apply to restore original coating thicknesses.
Crown Trade 23-05-2024
M60 Painting/clear finishing Page 85 of 91
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