Many people don't know it but its is code to have your smoke chamber parge coated smooth. There are many reasons for this such as draft, structural integrity,  and insulation properties. Smoke chambers that are not parge coated can cause creosote to accumulate faster, heat to transfer to any exposed wood construction, and cause the smoke chamber to begin falling apart. A-1 offers Chamber Tech 2000, Chamber Coat , and Smoketite these are three different types of products and your technician will determine which is the right one for you. Call today to schedule your appointment (630)827-0600.