In plumbing, lead pipes were commonly used for water supply lines and drain pipes due to their flexibility and ability to create tight seals. Lead-based paint was widely used for its durability and moisture resistance, making it a popular choice for both interior and exterior surfaces. In roofing, lead flashing and sheets were employed to waterproof and seal joints and connections.

However, the use of lead in home construction has significantly declined due to the health hazards associated with lead exposure. Lead is toxic and can cause serious health problems, particularly in children, including neurological damage, developmental delays, and other severe medical conditions. As a result, lead-based materials have been largely phased out and replaced with safer alternatives.

Today, regulations and guidelines are in place to manage and mitigate lead hazards in older homes. This includes lead abatement programs, removal or encapsulation of lead-based paint, and replacement of lead plumbing pipes to ensure safe living environments.