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How to Choose the Right Chimney Brush

Back to the Chimney Brushes

Clean your Chimney Regularly

Since there is no standard fireplace chimney you will have to first measure the inner dimensions of your fireplace or woodstove chimney to properly size the chimney brush you'll need.  Use caution when climbing onto the roof.

For metal or pre-fabricated chimneys you'll need to remove the chimney cap then measure the distance across the inner diameter of the chimney.  Select either a round wire or poly brush that is the same diameter as your chimney.  A Poly brush is recommended for metal chimneys since it won't scratch and wear down the inner stainless steel lining.

For masonry chimneys you'll need to measure the inner flue liner dimensions both directions.  Buy a brush that is at least as big as your chimney liner otherwise it will not reach the side walls of your chimney and won't do an adequate job.  If you buy a chimney brush that is too big then it will be harder to get down the chimney but will work unless excessively oversized.  If you have an oval chimney liner then you could buy a brush as large as the rectangular dimensions would be then snip off the tines to make it oval.  Some oval sized chimney brushes are available.  Call us if you can't find what you need.

Wire bristle chimney brushes are most commonly used and generally do a great job.  Homeowner versions and Master Sweep versions are available.  The Master Sweep version has more bristles and will generally make the job easier and faster.  Wire bristle brushes are not recommended for metal chimney flues.
Flat Wire Bristle chimney brushes are stiffer than regular wire bristle brushes and the flat tines provide better scraping action: great when glaze creosote is present.
Poly chimney brushes are recommended for use in metal chimneys as they don't scratch the chimney walls.  Standard poly brushes are very stiff and may be difficult to work into a very dirty chimney and also do not go around any bends that may be present in a chimney system.  Pre-Fab poly brushes are more flexible and are recommended where bends are present or heavy amounts of creosote make cleaning difficult with standard poly brushes. 
Fiberglass rods do not have a lot of bend in them.  They should be used in flues that are pretty much a straight shot.  The 5RU-10624 rods will flex up to 90 degrees to allow you to enter the flue through most fireplaces but will not go through a 45 degree elbow in the flue.  The 5RU-59F-4 rods do not have much flex in them at all.  They are good for straight flues with heavy creosote buildup requiring strength for pushing through the buildup.
Super Flexible Rods are used in chimneys where there are tight bends present.  These rods will bend around 90 degree bends or more.  Due to the extreme flexibility and thin rod diameter they may become too flexible in long chimney runs.  They are best used when the bend is at the end of chimney and can be used in combination with other style rods.
ProFlex Poly Rods are designed to be flexible enough to go through sharp bends, offsets, breaches, or thimbles; their flush brass fittings stop flue tile hang-up.  Although large in diameter these polypropylene rods are flexible and versatile.  These rods are generally too flexible for scraper use.  Using an adapter you can attach any brush or rod that has a 3/8" NPT.
The LockFast Poly Rod is flexible like the ProFlex Poly Rod, but it's designed with a locking mechanism that prevents accidental unscrewing.  Using an adaptor you can attach any brush or rod that has a 3/8" NPT.
Adapters are available to connect Lock-Fast Rod directly to Proflex Rods, quick connects, and several others.
Kwik-Lock chimney rods offer a unique locking system that will not "unscrew" in the chimney, yet will allow very quick attachment and detachment.  Kwik-Lock rods allow you to quickly and confidently maneuver through offsets, thimbles, breaches, and sharp bends with no unscrewing.  Although they are not generally stiff enough for scraper use they work well for chimney brushes.
ProKleen 5 Foot Steel Rod - The 5' rod is made of 1/4" steel. Use the 1' Starter Rod to insert into your heavy-duty drill and then attach the other rods to your starter rod. These rods may also be used as replacement rods for the RoKleen System. The ProKleen Rods feature a spring-loaded, locking mechanism that won't unscrew. Thus, your drill can rotate your ProKleen System in either a clockwise or counterclockwise direction. 1 Foot Starter Rod and 2.5 Foot Rod sold separately.

While you're up on the chimney you might as well put on a chimney cap, keeps the animals, leaves, rain and snow from damaging your chimney.  Follow this link for chimney caps.

 A chimney fire in progress 

Click here for instructions on cleaning your chimney.  For more information on chimney fires read this.

Click here for a great selection of chimney cleaning supplies.

If you are looking for a chimney cleaning product you don't see please call us toll free at 866-NORTHLINE (866-667-8454) or e-mail us at

Back to the Chimney Brushes

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