Lead-based residential paint was banned in the United States in 1978, but it didn't vanish from older homes the day the rule took effect. Across Bellingham's Lettered Streets, Fairhaven, Sehome, and South Hill — and throughout Lynden, Ferndale, Blaine, Mount Vernon, and Sedro-Woolley — pre-1978 homes commonly still carry lead paint behind newer layers, on window sills, on porches, and on exterior trim. This guide walks Whatcom and Skagit County homeowners through the risks, the testing options, and the safe paths forward.
Why Lead Paint Is Still Common in Bellingham Homes
Roughly two-thirds of housing units built before 1978 in the United States contain some lead-based paint. Bellingham's housing inventory skews old: large sections of the city were built between 1900 and the 1960s, and the EPA estimates that the older a home is, the more likely it is to have lead paint and the higher the lead content. A 1920 craftsman in the Lettered Streets is almost certain to have lead paint somewhere; a 1950s Sehome rambler is highly likely. Even a 1976 house can still test positive.
Health Risks — Especially for Kids Under Six
Lead is a neurotoxin. There is no known safe blood-lead level. In children under six, lead exposure can cause permanent reductions in IQ, attention deficits, behavioral problems, hearing loss, and developmental delays. In adults, chronic exposure is linked to high blood pressure, kidney damage, fertility issues, and cardiovascular disease. Pregnant women are at especially high risk because lead crosses the placenta.
The most dangerous form of exposure is lead dust, not paint chips. When old lead paint is sanded, scraped, heated with a heat gun, friction-worn (window sashes, door jambs, stair treads), or removed without proper containment, microscopic lead-containing dust spreads through the home and settles into carpets, upholstery, and HVAC systems. Children pick it up through normal hand-to-mouth contact.
Where Lead Paint Hides in Older Pacific Northwest Homes
Window sills and the friction surfaces around double-hung sashes are the single most common high-lead surfaces in older Bellingham homes. Door jambs and door edges, exterior siding and trim, porch floors and railings, garage interiors, basement walls, radiators, and built-in cabinetry are all common positives. Original front doors, banisters, and stair treads in pre-1940 homes are particularly likely to test positive.
Lead paint is often hidden under multiple layers of newer paint. A bedroom that "looks fine" can release dangerous amounts of lead dust the moment a homeowner takes a sander to the trim or strips paint with a heat gun.
Testing Options for Whatcom County Homeowners
Two professional testing methods dominate. XRF (X-ray fluorescence) analyzers give instant, non-destructive readings on individual painted surfaces — ideal for whole-house assessments without taking samples. Bulk paint chip sampling sent to an accredited lab is more sensitive, useful when XRF results are borderline or when you need defensible documentation for a real estate transaction or grant program. Both belong in the toolkit of an EPA RRP-certified inspector.
Cheap home test kits from the hardware store are not reliable enough for renovation decisions. False negatives are common, and false positives can create unnecessary cost.
EPA RRP: What Every Bellingham Contractor Should Follow
The EPA's Renovation, Repair, and Painting (RRP) Rule requires firms working on pre-1978 homes (or pre-1978 child-occupied facilities like daycares and schools) to be EPA-certified, to use lead-safe work practices, and to give homeowners the EPA's "Renovate Right" pamphlet before work begins. Lead-safe practices include containment with plastic sheeting, prohibitions on dry sanding and open-flame paint removal, HEPA vacuums, and post-work cleaning verification.
If your contractor can't show you their EPA RRP firm certificate and individual renovator certifications, do not let them touch any pre-1978 surface. The fines for non-compliance are real, and the health consequences for your family are far worse than the fines.
Encapsulation, Enclosure, or Full Removal — How to Choose
Encapsulation seals lead paint in place using a specially formulated coating. It's fast, inexpensive, and ideal for stable interior surfaces that aren't subject to friction. Enclosure covers lead-painted surfaces with new material — drywall over a wall, vinyl over wood siding, replacement windows over original sashes. It's a permanent barrier as long as the new material isn't disturbed. Full removal is the most expensive option but is sometimes the only sensible choice for windows, exterior siding being repainted, or properties that will be sold or used as rentals.
The right choice depends on the surface, the household composition (especially children under six), the budget, and your long-term plans for the property. A certified lead professional can walk you through the trade-offs honestly instead of defaulting to whichever option pays them the most.
When to Call a Certified Lead Professional
Call before you renovate any pre-1978 home. Call before you buy a pre-1978 home, especially if you have or plan to have children. Call if you've already started a project and noticed paint chips or dust. Call if a child in your household has shown elevated blood lead levels. Absolute Asbestos provides EPA RRP-certified lead testing and abatement across Bellingham, Whatcom County, Skagit County, Island County, and Snohomish County. Reach us at (425) 923-6994.
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