Chimney Thimble Replacement

The proper way to close off a thimble port is with brick and mortar to create a solid and safe enclosure.

Chimney thimble replacement.

180 degree heat shields are available for single wall pipe to reduce clearances to 6 for walls and 9 to the ceiling. 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. 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. How to replace the chimney thimble.

Wood stoves use thimbles made of clay to handle high temperatures a the junction between the wood stove and the chimney. To do it you need to mix mortar to a fairly watery consistency to be able to easily work with it into the cracks. If there s no lining due to the flue then a new one needs to be installed. If you can in stall a clay thimble y.

Of duraplus chimney pipe sold separately and features the necessary. Simpson duravent pelletvent 3pvl x6 double wall air insulated pellet stove chimney adapter stainless steel inner wall and galvalume outer wall requires a dvl durablack chimney adapter 6 inch 4 6 out of 5 stars 50. Installing a thimble in a chimney isn t difficult but the job needs to be approached carefully and systematically to avoid damage to the interior chimney flue. 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.

Things you ll need refractory mortar trowel putty knife hammer chisel. Single wall stove pipe going from the stove to the chimney must have a minimum of 18 clearance to combustibles. This through the wall chimney stove vent kit supports up to 40 ft. It s important that your chimney service technician checks that the area that gets closed off has a lining.

For ideal results you should fill the cracks from both the inside and outside of the thimble.