Lead paint in older homes — testing risk and what to do

This article is for educational purposes only and is not a substitute for professional advice. Local codes, regulations, and best practices vary by region.

Lead paint was widely used until 1978 when the federal government banned lead in residential paint. Homes built before 1978 likely have lead paint. Lead is dangerous, especially for children, causing neurological damage and developmental problems. But lead paint is only dangerous when disturbed—when it deteriorates, peels, or is sanded.

Understanding your home’s lead status and taking appropriate precautions keeps your family safe without requiring expensive remediation you might not need.

Lead Paint Risk

Lead is a neurotoxin. Children who ingest lead dust develop permanent neurological damage. Lead exposure reduces IQ, causes behavioral problems, and affects learning. Adults can suffer kidney damage and neurological effects at high exposure.

Lead in paint dust is the primary risk. A chip of paint is a concern. Deteriorating paint constantly shedding dust is serious. Paint in good condition is low risk.

Lead in soil around the foundation is another concern. Deteriorating exterior paint sheds lead into soil. Children playing in soil might ingest dust.

Testing for Lead

An XRF (x-ray fluorescence) tester detects lead in paint. Professional testing costs $200 to $500 for the whole house. DIY test kits (swab tests) cost $20 to $50 but are less reliable.

Professional testing is worth the cost if you’re buying a home or concerned about lead. You get certainty instead of guess.

If your home was built before 1978 and you haven’t tested, assume lead paint exists until proven otherwise.

If Lead Paint Exists

Intact paint is low risk. If your paint is in good condition, leaving it alone is fine. Lead isn’t escaping if the paint isn’t disturbed.

If paint is deteriorating, cracking, or peeling, action is needed. Options include encapsulation (sealing the paint with a new finish), enclosure (covering with new material), or removal.

Encapsulation costs $500 to $2000 for a typical room. The lead stays, but it’s sealed and can’t be disturbed.

Removal requires specialized contractors (licensed lead abatement firms) to safely remove paint and dust. This is expensive ($5000 to $20,000+ for significant work) but eliminates the hazard.

Safe Practices If Lead Paint Exists

Never sand lead paint. Sanding creates dangerous dust. If you need to refinish, either hire a lead-certified contractor or use encapsulation.

If paint is damaged, clean it carefully. Wet-wipe all dust (wet cloths trap dust better than dry). Never dry-sweep, which spreads dust.

Keep children away from deteriorating paint areas.

If you remove paint yourself in a small area, use HEPA vacuums and wet-wiping. Contain dust with plastic sheeting.

Work carefully, slowly, and with ventilation. Minimize dust creation.

Professional Abatement

A certified lead abatement contractor has training and equipment to safely remove lead paint. They contain dust with plastic and negative pressure, remove contaminated materials safely, and clean thoroughly.

Costs are high, but doing this correctly is important. Improper removal spreads lead contamination.

If you have lead and decide to remove it, hire professionals.

In Perspective

Lead paint is a real hazard that needs attention. But it’s not an emergency if the paint is intact. If you have old paint in good condition, maintaining it (not sanding, protecting from deterioration) is sufficient.

If paint is deteriorating or you’re renovating, professional assessment and proper handling prevent hazards.

Most older homes with lead paint pose manageable risks when handled carefully. Panic isn’t necessary. Careful handling is.

© The Whole Home Guide