Criterion specializes in metal restoration and refinishing. Repeated homeowner DIY projects often leave many layers of paint. Our Controlled Pyrolysis or Burn Off Oven allows us to pretreat our wrought iron and ferrous metal projects with heat up to 800 degrees. The high heat reduces the existing coatings to ash. The burn off process prepares the subject item for sandblasting. The aggressive sandblast procedure is made less harmful to the substrate by the effects of the process of pyrolysis.