Q: Dear Jason, Do you make a Chimney Balloon for a 10.5" diameter, circular chimney uptake? Your products seem to be made for squares or rectangles. I can't put a square into a round hole and expect a snug fit...or can I? Thank you. RM
A: Dear RM, Thank you for your Chimney Balloon question. You present a very common question about the Chimney Balloon. How can you fit a square or tapered Chimney Balloon into a round hole (like a round metal flue)? The answer is... balloons are flexible and only expand as far as the flue wall allows it to and no further, the extra material either folds or pops inward and the balloon is still able to seal tightly. We have a tradeshow demo that we use to explain it and I took two photos of the demo, so you can see what I mean. This image is of a 9" clear tube with a 9x9 Chimney Balloon installed in it. Your 10.5" diameter flue would need a 12x12 Chimney Balloon, but it will seal the same.
However, if you really want to get a round 12" Chimney Balloon we do make those as a custom for the same price as the standard, it just takes 14 days to get a custom made and shipped to you. The rounds are not listed on the website, so you would need to call in the order and we can enter the order in directly with proper build notes. - Jason
Interesting article, with a great idea to explain this chimney concept. I'll be sure and share this information with our featured contractors.
-econtractorbids.com
Posted by: Finding a Contractor | April 28, 2010 at 12:17 AM
this was just what I was looking for, thanks
Posted by: Pointing chimney | June 01, 2010 at 02:12 AM