Q: Jason, My house has a standard colonial Chimney made in 1796. What size chimney do i have and what size Chimney Balloon should I use? – JS
A: Dear JS, Unfortunately, there is really no way I can estimate a size Chimney Balloon you would need without seeing the application or having some measurements of the flue. There were certainly no codes or standard sizes for 1796 fireplace construction. It really would be necessary to measure the flue first.
If you want a little more assistance you can email photos of the fireplace and flue area and I can give you more direction on specifically where to measure. You will be looking for a location in the flue to measure that is within arms reach and has roughly parallel walls. Let me know if I can be of further assistance. – Jason