Any tar build up in a chimney or liner must be removed due to it’s flammable nature. In the event that tar cannot be removed from the sweeping process alone, other solutions must be considered.
Chemical tar removal treatments are used to remove tar from liners or a structurally unsure chimneys when more abrasive cleaning methods, such as a débistrage risk causing damage.
Chemical treatments rely on professional grade chemicals reacting with the glazed creosote (tar) and drawing out the moisture, reverting it back into dry and brittle creosote which can then be swept out of the chimney from standard sweeping procedures
The entire process takes two weeks to complete.
Over the next two weeks, hot fires will need to be burning for atleast 2 hours a day. The chemicals in the chimney will react to the heat and draw out the moisture in the tar, leaving it brittle and more importantly, sweep-able.
If you suspect you have tar in your chimney, get in touch with us. We will be able to asses whether a chemical treatment is necessary for your situation or find an alternative solution if not.