Paint stripper
Paint stripper, or paint remover, is a product designed to remove paint and other finishes and also to clean the underlying surface. The removal of paint containing lead may lead to lead poisoning and is regulated in the United States. Other paint removal methods involve mechanical (scraping or sanding) or heat (hot air, radiant heat, or steam). A material safety data sheet will provide more safety information than on the product label.
Types of chemical paint remover
Chemical paint removers work only on certain types of finishes, and when multiple types of finishes may have been used on any particular surface, trial and error testing is typical to determine the best stripper for each application. Two basic categories of chemical paint removers are caustic and solvent.
Caustics
Caustic paint removers, typically sodium hydroxide (also known as lye or caustic soda), work by breaking down the chemical bonds of the paint, usually by hydrolysis of the chain bonds of the polymers forming the paint. Caustic removers must be neutralized or the new finish will fail prematurely. In addition, several side effects and health risks must be taken into account in using caustic paint removers. Such caustic aqueous solutions are typically used by antique dealers who aim to restore old furniture by stripping off worn varnishes, for example.