Behr, Dumond Chemicals, Sherwin-Williams and Kilz manufacture good masonry paint removers that are available at Behr.com, DumondChemicals.com, Sherwin-Williams.com and Kilz.com. Behr Premium Concrete & Masonry Paint Stripper is designed for removing multiple coats of paint, sealant, epoxy and stain from masonry, metal and concrete surfaces.
Dumond Chemicals produces a heavy duty paint remover that is environmentally safe and biodegradable. It is designed to remove up to 30 coats of paint from most surfaces.
Sherwin-Williams manufactures Smart Strip paint remover that is biodegradable and effective. It does not contain toxic chemicals and can be applied with a brush, roller or airless sprayer.
Kilz produces a concrete and masonry paint stripper that is a biodegradable coatings stripper that can be used on interior and exterior surfaces. It removes stains, epoxies, elastomerics and sealants.