New Brunswick, Canada   

my chimney is a outside chimney which produced a lot of condemsation in the clean out


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by ChimneyChick | September 14, 2015 ChimneyChick's avatar
Midland, Ontario

Sounds like this chimney is exposed to a lot of cold air and thus the condensation.
The difference in temps between the interior and the exterior of the chimney is what causes condensation, especially in a chimney servicing a natural gas, propane or oil fired appliance. Think ice cubes in a warm drink on a summer afternoon. Condensation forms on the exterior of the glass.

Depending on the unit that is venting up that chimney you may be well advised to install an insulated chimney liner or build an insulated chaise around the existing chimney.
A warm chimney will not only vent the appliance more effectively but will not condensate..
Contact your wett certifed sweep in NB at http://www.wettinc.ca

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