The lining of the flue services three main functions:
As the exterior of your chimney is faced with the varying weather elements, water leaks are possible. Water tends to travel the path of least resistance and can be difficult to pinpoint at times. Some common ways for water to leak inside the chimney are: no rain cap, cracks or voids in the chimney crown, and deteriorated mortar joints or compromised brick.
To act quickly on water issues, we keep various size rain caps stocked in our warehouse! We also carry sealant products such as CrownTite and Chimney Saver water repellent. The applied sealant acts as a barrier between the masonry surface and outside weather conditions.
For prefabricated chimneys we will inspect the integrity of the chase top flashing. Chase top flashings are made of metal and have a tendency to rust over the years and develop small holes for the water to pass through over time. If your chase top flashing needs to be replaced, we will take measurements of the chase and have a custom stainless-steel flashing made for your chimney. The stainless-steel replacement flashing will withstand years of weather and won't deteriorate or rust.
If water leaks are left untreated it can cause more sever issues later down the road. For masonry chimneys when the water seeps into the brick and freezes and thaws it will cause the brick to spall and the faces to pop off. Depending on the severity of the leak it can cause damage to your appliance or other interior structures.