What is a Chimney Chase Cover?

Home Builder with Chase Toppers, LLC

A chase cover, sometimes referred to as a chase top, is a metal covering designed to keep things like rain, snow, and animals from entering a home via the chimney chase.  This chimney chase cover is typically made of less expensive galvanized sheet metal.  Unfortunately, rust on a chimney's exterior is more than just a cosmetic problem; it could be a sign of much more serious issues.  Heat from the fireplace and various environmental conditions contribute to the breakdown of the galvanized coating on chase covers until the metal is completely unprotected and begins to rust.  The rust continues to deteriorate the chase cover allowing water from rain and melting snow into your home causing interior damage. Visit this website to see examples of chimney chase covers.

Rusty Galvanized Chimney Chase Cover Stainless Steel Chimney Chase Cover

Replacing chimney chase covers, we see a lot of "questionable" installs.   Here is one example we (Chase Toppers) had the pleasure of solving.

This builder decided to use 2 sheets of galvanized sheet metal to fabricate this chase cover on site. Note the roofing tar between the two sheets of metal. The customer reported that their fireplaces leaked "for years". Rusty Galvanized Chimney Chase Covers

Here is our custom Stainless Steel Chase Cover to replace the failed galvanized cover:
Rusty Galvanized Chimney Chase Covers

New Home Builders may be especially interested in choosing stainless steel chase covers for their customers homes.  Homeowners will be singing your praises instead of complaining about their rusty, leaky chimney to other prospective new home buyers.  We work with builders, property managers, and homeowners alike to provide this lifetime solution for their homes. 


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Dana Bostick
True Professionals, Inc. - North Hollywood, CA

What do you mean I need a chase cover?  I don't need no stinkin chase cover!  Henry's works fine! 

I don't think they intended to do anything more on this.  The house was being sold in this condition.  There were many more such "finds".  This was the ultimate "fluff 'n flip" job just waiting for some dumb buyer to fall for the granite counter tops, bamboo flooring and beveled glass front door.  You can get anything at Home Depot! (including all the trained building professionals you need.  They are just waiting in the parking lot for you to pick them up.)

No chase cover/flashing

Jul 28, 2007 04:21 AM #14
Larry Wright
nwRealty.Com - Tacoma, WA
Thanks for sharing Tom.  I was educated about this a couple of years ago when we talked with a contractor about upgrading our fireplace.
Jul 28, 2007 07:20 AM #15
Tom Francis
Chase Toppers, LLC - Pottstown, PA

Hey Dana,

      Ouch....Great find.  If it weren't for conscientious inspectors like yourself, unsuspecting home buyers would be in for quite a surprise when the water leaked out from around their fireplace and onto those beautiful bamboo floors.  I think the term "incomplete" would be an understatement for this chimney.  -Tom

Jul 30, 2007 02:12 AM #16
Tom Francis
Chase Toppers, LLC - Pottstown, PA

Thanks everyone for your recent comments.   As you can see, I've been absent from AR again for a bit.  God has blessed us with no "off-season" this year, so it looks like we are going to roll right back into the Fall season with a bang.  I'll try to get some time for some more educational blogs soon.  Until then, keep the comments coming, and be safe!  -Tom

Jul 30, 2007 02:15 AM #17
Bob Elliott
Elliott Home Inspection - Chicago, IL
Chicago Property Inspection

You have only done a few blogs, but they are good Tom.

You are very descriptive and educational.Keep up the good work as alway's.

Jul 30, 2007 05:13 PM #18
Jennifer Kirby
Kirby Fine Homes - Minneapolis, MN
The Luxury Agent

We bought an old home whos chimney wasn't capped at all. Found lots of skeletons of birds and squirrels inside. Not a pretty sight. Thanks for the great example on what not to do.

Jul 31, 2007 01:57 AM #19
Joseph Hagarty
Main Line Inspections, Inc. - Parkesburg, PA


You have a graet product,

I have added a link on my website.



Jul 31, 2007 02:26 PM #20
Tom Francis
Chase Toppers, LLC - Pottstown, PA
Thanks for the link Joe!  I appreciate it.  -Tom
Aug 01, 2007 01:22 AM #21
John smith
SmartRate Mortgage - Tampa, FL

People don't understand the importance of something like this until it effects their homes.

When I bought my home it had an antennae and old cover on the chimney.  When I took the antennae down I realized that it was time for a new one. 

Homeowners need to address these problems before the chimney cracks or before the water starts running into the fireplace or furnace.

What is it they say, "an ounce of prevention is worth a pound of cure"

Aug 24, 2007 06:53 AM #22
Maribeth Messineo Peters
214-566-1210 - Dallas, TX
Dallas native-Preston Hollow Greenway Parks expert

Interesting post...we call them "Chimney Caps" here in Dallas.

My buyer had an inspection this week on a house and the chimney has deteriorated and may partially need to be rebuilt. The inspector mentioned that if there had been a chimney cap on it all these years this problem would not have occurred. Getting bids on the chimney work and a chimney cap next week!

Maribeth Peters- Dallas,TX

Sep 01, 2007 08:48 AM #23
Vincent Coccia
Construction Services Integration - Paoli, PA
Great article!  It is amazing how the inferior material is used for a most important component of a home.  As a contractor I see this many times where inferior products are used just to save some money.  Great solution that you have and I will keep you in mind for any clients that I come across. Thanks.
Dec 18, 2007 02:34 PM #24
Dale Baker
Baker Energy Audits and Commercial Properties Inspections - Claremont, NH
New Hampshire Relocation Real Estate Information

Howdy Tom

I do enjoy reading your blog posts, they are very educational for folks to read. Keep up the fine writing you are doing.

Have a good one


Jan 19, 2008 07:44 AM #25
Leo Vinteler
Stout Associates Realtors - Wyomissing, PA
Exqusite Service

very interesting, always wondered but now I know...


good luck in business

Feb 25, 2008 09:58 AM #26
Robert Machado
HomePointe Property Management, CRMC - Sacramento, CA
CPM MPM - Property Manager and Property Management

Good information on chimneys.  Do you travel to California to work on chimneys?

Jun 01, 2008 05:37 PM #27
Tom Francis
Chase Toppers, LLC - Pottstown, PA

Thanks for your comment Robert.  Our projects sometimes do take us out of state.  Such projects are evaluated on a case-by-case basis.  I'll follow up with you directly via email shortly.  Thanks again!  -Tom

Jun 02, 2008 01:50 AM #28
Sabrina Kelley
ERA Herman Group Real Estate - Woodland Park, CO
Woodland Park Colorado Mountain Homes and Land

Great education. I deal with many wood stoves and chimneys here in the Park and Teller counties of Colorado.

I appreciate the pointers.

Jun 16, 2008 01:30 PM #29
Gita Bantwal
RE/MAX Centre Realtors - Warwick, PA
REALTOR,ABR,CRS,SRES,GRI - Bucks County & Philadel

Thanks for the post. I will mention it to my clients. I will bookmark this post.

Jun 24, 2008 11:04 PM #30

We just had a stainless steel chase top installed. Nine days late, when it rained, it was leaking. What can go wrong? Thanks!

Aug 03, 2011 03:21 PM #31
Tom Francis
Chase Toppers, LLC - Pottstown, PA

Hi Yan,

It depends on where the leak is.  If you have water coming in through your fireplace itself (where the wood/gas burns), then water is traveling straight down your flue pipe.  This is due to a problem with the flue cap or installation of the cap.  If water is entering your home around the fireplace (for example, the drywall around the fireplace is wet), then there could be a problem with the chase cover itself.  If this is the case, have your contractor examine the seam where the collar of the chase cover meets the horizontal part of the chase cover.  It could be possible that a weld on that seem could have been "burned through" during fabrication of the cover.  Hope this helps.  Thanks for your question, and have a great day!  -Tom

Aug 04, 2011 02:00 AM #32

Couldn't agree more Tom. In fact, we wrote an article - http://www.highschimney.com/articles/guide-to-buying-chimney-chase-covers/ - saying the same thing - galvanized covers rust, and stainless is the much better option.   Cheers!

Apr 09, 2012 06:51 AM #33
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