Lead paint

Frequently asked questions

Is intact lead paint on a wall dangerous?

Largely not, and that is the whole basis of how it is regulated. Lead in a sound, adhered film is not going anywhere: the exposure route that matters is DUST and fumes, created when the film is sanded, scraped, burnt off, blasted or allowed to deteriorate into flaking chalk. So the risk is a property of the CONDITION and of what is about to be done to it, rather than of the presence of lead. The two circumstances that turn it into a hazard are disturbance by work and deterioration over time — plus a third that is specific to housing: friction surfaces. A painted sash window or a door rubbing in its frame grinds lead paint into dust every time it is used, which is why those are singled out in guidance even where the rest of the house is sound. The default advice therefore mirrors asbestos: leave a sound coating in place, encapsulate or overcoat it, and manage what disturbs it.

Why is a heat gun the wrong tool, and what is the right one?

Because lead fumes at a temperature below what a heat gun produces on its hot setting, and fume is inhaled far more readily than dust. Paint softens well below that, so the safe use of heat is a low setting with a thermometer and constant movement — which is slow, and which is why most people turn it up. The tools that generate the worst exposure are exactly the fast ones: an open flame, a heat gun on full, dry power sanding, and abrasive blasting. What is recommended instead is either removal that keeps the dust wet and heavy — wet scraping, wet sanding, chemical stripping — or removal that captures it at source with a shrouded sander on a filtered vacuum. Ordinary vacuums are their own hazard: a domestic cleaner without the right filtration passes fine lead dust straight through and distributes it around the room more evenly than sweeping would.

Why does the American 1978 date not help in Britain?

Because it is a legal presumption attached to a specific regulatory scheme, not a fact about paint chemistry. The United States banned lead in consumer paint in 1978, so American law can treat that year as a bright line: pre-1978 housing carries disclosure duties on sale or lease, and paid work on it triggers certification and prescribed practices. Britain restricted domestic paint later and progressively rather than at a single stroke, and never attached a housing-age presumption of the same kind, so there is no year that clears a British property and no automatic disclosure duty of that shape. The practical consequences are opposite. In the United States the age of the building tells you which rules apply. In Britain it tells you only that lead is plausible, and the way to find out is to test the surface — which is also why an American method statement applied to a British job can be simultaneously more prescriptive than the law requires and silent about the assessment the law does require.