Chimney Thimble Replacement

A thimble should be cemented with high temperature cement into the masonry wall of the chimney and the stovepipe inserted into the thimble without cement for easy removal for cleaning and replacement.

Chimney thimble replacement.

You should pack insulation snugly against the outside box frame of the thimble but never place insulation into the area within the thimbles s cylinder. Single wall stove pipe going from the stove to the chimney must have a minimum of 18 clearance to combustibles. The proper way to close off a thimble port is with brick and mortar to create a solid and safe enclosure. For ideal results you should fill the cracks from both the inside and outside of the thimble.

If the thimble is slightly cracked you should go ahead and repair it. 180 degree heat shields are available for single wall pipe to reduce clearances to 6 for walls and 9 to the ceiling. The duraplus system from duravent is designed to the duraplus system from duravent is designed to stay cool on the outside provide a hot draft on the inside and boost stove efficiency offering a fire safe design that protects both the chimney and building. The thimble enters the flue inside the chimney at a 90 degree angle and is designed to accommodate the entry of a stovepipe from a wood stove.

If the stovepipe is connected to a masonry chimney it should extend through the near wall of a chimney to the inner face of the chimney liner but not beyond it. If there s no lining due to the flue then a new one needs to be installed. This through the wall chimney stove vent kit supports up to 40 ft. If you can in stall a clay thimble y.

To do it you need to mix mortar to a fairly watery consistency to be able to easily work with it into the cracks. How to replace the chimney thimble. Of duraplus chimney pipe sold separately and features the necessary. Wood stoves use thimbles made of clay to handle high temperatures a the junction between the wood stove and the chimney.

Things you ll need refractory mortar trowel putty knife hammer chisel.