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Before installing your Chimney Balloon ®

Take a few minutes to inspect your fireplace chimney flue

  1. Inspect the exterior of your chimney, looking for white stains and/or other discoloration
  2. Look for deteriorating or cracked masonry on the exterior of the chimney
  3. On the inside of your home look for staining or peeling of paint on the walls
  4. Inspect your chimney cap, chimney crown, and/or stainless steel or galvanized chase cover
  5. Look for cracks or deteriorating mortar joints in your terra-cotta chimney flue tiles on the interior of your fireplace chimney
  6. Examine the fire box itself for any cracks, warped metal, or missing or deteriorating masonry fire bricks

PASSED Inspection

You did not find any of the mentioned problems. If your fireplace chimney and chimney components PASSED this inspection list you are now ready to install your Chimney Balloon ®

FAILED Inspection

You found one or more problems mentioned above. If your fireplace chimney FAILED this inspection, you may need to install a Flex King Chimney Lining System.

Inspection FAILED, what to do now?

Click Here for more info on repairing your fireplace chimney with a stainless steel chimney liner.

chimney balloon

How to stop drafts in a fireplace

Click here to buy The Chimney Balloon ®, it is a great product for solving drafts in fireplaces. Sometimes the metal dampers become warped or just don’t function the way they were intended to. The Chimney Balloon ® is a great product to use during summer months when you are not using your chimney. Simply insert The Chimney Balloon ® into the chimney and inflate it.

When you are installing your chimney balloon it’s a good time to check your chimney flue for cracks or deterioration. If your chimney flue is showing signs of deterioration, it would be a good time to install a Flex King flexible stainless steel chimney liner.








    *Note: If you have a terra cotta clay chimney
    flue lining, be sure to measure the true length and width of the
    inside of your chimney flue space.

    *If there is a terra cotta clay flue liner, does it protrude out of
    the top of the chimney at least 2 inches? If there are at least 2
    inches and the terra cotta clay is in good condition, you will use
    our stainless steel, terra cotta top plate that has a 1 1⁄2inch edge
    that goes all the way around (like a shoebox lid).

    *If your terra cotta clay flue is in bad shape at the top, you may
    need to just take a hammer and tap all around that terra cotta,
    taking it away to make the surface flat at the top of your chimney.
    In that case, you will simply use the flat top plate that comes with
    our liner kit.



    *Note: If you have a terra cotta clay chimney
    flue lining, be sure to measure the true length and width of the
    inside of your chimney flue space.

    *If it is on the back of the stove, is it parallel with the back of the stove or is it at an angle, like 45 degrees?

    *If it is at an angle you will use an insert stove adaptor (an insert liner kit) rather than a two-part tee with cleanout cap.


    Usually pellet stoves have an exhaust hole id of 3 inches. However, if you are going up more than 15 feet to the top of your chimney you need to use a pipe and/or flex liner that is 4 inches diameter.





    If you are only venting a hot water heater then the exhaust hole diameter is probably 3 inch diameter. If it is 3 inch diameter and you are going up more than 15 feet to the top of your chimney, you must use a 4 inch diameter flexible liner or ridged pipe for proper draft. We also suggest to go ahead and use a 4 inch diameter flexible liner or ridged pipe even if the total length is 15 feet or less.


    Not the depth or any other dimension inside your fireplace.

    Most gas log fireplaces require an 8 inch liner kit or rigid kit. But do not assume that is the case for the gas log fireplace kit you are installing. Obey the requirements for that specific unit that are in your installation/instruction manual.

    THANK YOU FOR ANSWERING THOSE QUESTIONS

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