Brush size

[Terry B]

Hi guy's
Might be a dumb question but what brush size would you use on a 7 inch stainless chimney pipe? A 7 inch one which is the same size as the pipe or 8 inch one ? Am going to use a poly brush.

 

[double-d]

I'd stay with a 7" hard bristle Poly brush, anything larger will give you problems. The Poly is what is recommend by the MFG usually over a wire brush. Some say that a wire brush will score the stainless and you could have an early failure of the liner.
You might want to take that new brush, when sweeping for the first time, and insert it about 12" into the liner and then pull it back out, then do it again at about 2', just so you don't shove it in 5' and find out it is to tight to get it back out. Had someone do it with a 5.5" liner and a 6" brush.

 

[Terry B]

I'd stay with a 7" hard bristle Poly brush, anything larger will give you problems. The Poly is what is recommend by the MFG usually over a wire brush. Some say that a wire brush will score the stainless and you could have an early failure of the liner.
You might want to take that new brush, when sweeping for the first time, and insert it about 12" into the liner and then pull it back out, then do it again at about 2', just so you don't shove it in 5' and find out it is to tight to get it back out. Had someone do it with a 5.5" liner and a 6" brush.

Thanks for the reply ! Will give the 7 inch brush a try.