Q1. Describe your process for preparing a surface before painting, especially for challenging materials like old plaster or metal.
Why you'll be asked this: This question assesses your foundational knowledge of surface preparation, which is critical for a durable and high-quality finish. It also reveals your experience with diverse materials and attention to detail.
Start by outlining the general steps (cleaning, sanding, patching, priming). Then, provide specific examples for different materials: 'For old plaster, I'd first test for stability, then scrape loose material, patch with a setting compound, sand smooth, and apply a specific masonry primer. For metal, it's crucial to remove all rust, degrease thoroughly, and apply a rust-inhibiting primer before the topcoat.' Mention specific tools or products you use.
- Generic answers like 'I just clean it and paint it.'
- Not mentioning specific steps for different materials.
- Ignoring the importance of priming or proper drying times.
- How do you handle lead-based paint remediation?
- What's your approach to dealing with mold or mildew on a surface?
- Can you describe a time when improper surface prep led to an issue, and how you resolved it?