Best type of brush for oval corrugated S.S flex liner measuring 5.5" x 9.5"? Ovalized from a 8" round.

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RJ in PA

New Member
Jun 19, 2026
21
Central PA
Good evening to Hearth.com users!

I appreciate the help from everyone here as I am planning on installing a new stove setup.

A new question: What is the reccomended type of brush to use in a SS oval corrugated flex liner about 5.5"x9.5"? It has several sharp bends in the roughly 30' of liner, including one at the bottom (at the cleanout tee).

I am looking for a brush that will allow me to clean from the bottom up, to avoid the risks with going on the steep roof of our house. As a result, I think some flexibility in the rods and brush is needed. I certainly do not want to puncture/scratch the liner anywhere!


I have heard soot-eater works well, but is there any rigid/manual type poly brushes that can work well for this setup? I would have to buy a stronger drill in order to use the sooteater. Would the manual poly brush work well for cleaning out the liner vs the sooteater?

Many thanks in advance for the help!
Russ