The first question you’re probably thinking is what is a débistrage? Put simply, a débistrage is the French word referring exclusively to the mechanical removal of tar and/or creosote. By using a variety specialist equipment such as wire whips and in some cases chains, attached to our rotary power sweeping equipment, we are able to remove tougher deposits and build ups, alleviating the fire risk these compounds provide.
When is a débistrage needed?
A débistrage may be necessary in a multitude of scenarios. Firstly, if a build up of tar has occurred in your chimney, it must be removed due to how flammable it is. Due to tar’s nature, it can be rather stubborn when trying to remove it. Should tar deposits still remain in the chimney following having your chimney swept, a débistrage can be a perfect solution to the problem.
Another scenario where a débistrage may be necessary is if you are having a stove installed in a previously used chimney. Although future exhaust gasses will be contained in the steel liner, the liner itself will become incredibly hot – If any ancient tar or creosote deposits are left in the pre existing chimney, they could catch alight and cause damage to your property. A liner should never be installed in a chimney that has not had previous deposits removed. We recommend having any installation work done by a chimney professional who will be certain to understand the importance of a débistrage and will either carry it out themselves, or have a fellow chimey professional undertake the work.
In the event that a tar build up has occurred in a liner or in a chimney which is structurally uncertain, a débistrage may not be an appropriate solution and could cause damage to the existing chimney. Other solutions such as Chemical Tar Removal Treatments may be more appropriate. Your Chimney Sweep will be able to assess your situation and determine which is the best solution for you.
Find our latest piece in Etcetera Magazine (Dec 2020 page 44-45)