A clean chimney or flue is a safer and much more efficient one. As soot builds, up it will retard air flow and draw of the chimney. Some wood such as Red gum which contains a substance known as “CREOSOTE” which is highly flammable. Different types of wood will emit more creosote than others. The more dense the wood generally means the more creosote. So a clean chimney cleaned by Expert Roofing is a much safer chimney! It is a good idea to have your chimney swept whilst doing renovations, some people wait to get there chimney swept until they have painted their home. There is new regulation, that if you are going to have gas fire or heater installed into a existing fireplace cavity. You must have the chimney swept and cleaned.