What Size Chimney Balloon You Require
Chimney Balloons come in six standard sizes. The vast majority of houses built during the 1970s or later will tend to have a lined round shaped flue. It is always best to double check before purchasing though. Follow the below steps
1:Use a torch to view up the inside of your chimney. Establish whether you have a round, square or rectangular or round shaped flue.
2: If its is round order the 7-9 Round Balloon
3: If it is a square or rectangular chimney you will need to locate two straight or parallel walls to where the chimney balloon will rest once inflated. (See Diagrams)
If it is square the options are 9×9 Inch or 12×12 Inch. If it is rectangular your options are 15×9, 24×12 or 36×15 Inch.
4: Measure this area front to back and side to side and compare measurements with the standard sizes available to establish which size you require.
5: If the sizes are not exact always go for balloon size which is slightly above your measurements.