Lead paint basics (safety workflow + disclaimers)

If your home was built before 1978, assume paint may contain lead until proven otherwise. Windows are high-risk surfaces because they involve friction (sashes sliding) and impact (opening/closing), which can create lead dust.

EPA notes that renovation/repair/painting work that disturbs lead-based paint in pre-1978 housing can create dangerous lead dust, and that certified contractors are required for many paid projects in those settings.

Know the regulatory landscape (in plain English)

• Paid contractors working in many pre-1978 homes must follow EPA’s Renovation, Repair and Painting (RRP) requirements (or state equivalents) and be certified.
• EPA notes the rule generally does not apply to homeowners working in their own homes, but it can apply in specific situations (rentals, child care, flipping).
• Regardless of legality, lead-safe work practices are a health best practice.

Why windows are “lead dust factories”

• Painted friction surfaces wear into fine dust
• Old sash channels trap debris
• Dry scraping/sanding aerosolizes particles

A safer workflow (high-level, not a how-to)

1. Assume lead is present and plan accordingly
2. Set the work boundary (containment) and keep kids/pets out
3. Avoid dry sanding/grinding; prioritize methods that minimize dust
4. Use HEPA cleanup practices and dispose of waste properly
5. Confirm cleanliness (especially if vulnerable occupants are present)

EPA provides resources for lead-safe renovation practices and consumer guidance (PDF).
Guidelines (PDF) for all you brave DIYers

When to stop and call a certified pro

• You’re stripping multiple windows
• You need power tools that will disturb paint
• Occupants include children under 6 or pregnant people
• You can’t maintain containment reliably

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