Lead and asbestos matters might also occur in older houses

https://wakelet.com/wake/d3c0OUXFurN6lgjc3YYMP

Lead and asbestos worries could show up in older buildings. Testing old caulk and material supports %%!%%7a90b3d7-1000-41b3-a6fe-466213da5725%%!%% the system protected and compliant.