DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Bricks, Masonry and Concrete > What is a proper chimney crown?




Reply
 
Thread Tools Search this Thread Display Modes
Old 06-03-2009, 07:57 PM  
travelover
Senior Member
 
Join Date: Aug 2007
Posts: 693
Liked 2 Times on 2 Posts

Default What is a proper chimney crown?

My 43 year old chimney (in Michigan) has loose bricks and spalling in the top 10 rows for bricks. Looking at it closely, I can see that it never had much of a crown - just mortar spread from the tile liner to the edges of the top brick layer. I just installed a high efficiency furnace (PVC vent through wall) and an aluminum liner for the water heater, so there will not be much condensation, as in the past.

I have 4 estimates with a price range of $1000.

The highest bidder wants to rebuild the top 10 rows then spread some kind of synthetic material over the top that is "better than concrete".

Mid bidder would rebuild 9 rows then cast a cement crown with 2" overhang.

Low bidder would rebuild 9 rows, add a 2 1/2" thick limestone cap that over hangs, then use sloped fiber filled concrete from liner to edges.

Since the old one lasted 43 years and in another 43 years, I'll be dead, how good is good enough?



__________________
travelover is offline  
 
Reply With Quote Quick reply to this message
Old 06-04-2009, 02:17 PM  
glennjanie
Senior Member
 
Join Date: Mar 2006
Posts: 2,990
Liked 2 Times on 2 Posts

Send a message via AIM to glennjanie
Default

Hello Travelover:
I vote for the mid range bidder.
Glenn



__________________
glennjanie is offline  
 
Reply With Quote Quick reply to this message
Old 06-04-2009, 06:59 PM  
travelover
Senior Member
 
Join Date: Aug 2007
Posts: 693
Liked 2 Times on 2 Posts

Default

Quote:
Originally Posted by glennjanie View Post
Hello Travelover:
I vote for the mid range bidder.
Glenn
Thanks, Glen. What tipped your vote?
__________________
travelover is offline  
 
Reply With Quote Quick reply to this message
Old 06-23-2009, 03:14 PM  
slownsteady
Supporting Member
HRT_SUPPORTER.png
 
slownsteady's Avatar
 
Join Date: Jun 2009
Location: Newton, NJ
Posts: 1,430
Liked 226 Times on 189 Posts
Likes Given: 279

Default

Logic says if it lasted 45 yrs you could rebuild it exactly as it was. You probably want a drip-edge, but maybe two inches is more than necessary. i would also like to know what "better than concrete" is before the guy (any guy) uses it.

__________________

Last edited by slownsteady; 06-23-2009 at 03:18 PM.
slownsteady is offline  
 
Reply With Quote Quick reply to this message
Old 06-24-2009, 07:33 PM  
travelover
Senior Member
 
Join Date: Aug 2007
Posts: 693
Liked 2 Times on 2 Posts

Default

I ended up going with the low bidder, but I'm entirely happy with the job. They crowned it with limestone which overhangs and topped that with a sloped fiber filled concrete cap. Once it was torn down I could see that whoever built it was a little short on flue tile so there was a 6" gap in the tile. No doubt this accelerated the decay of the chimney. They fixed the tile issue plus with my new furnace a few months back, an aluminum liner was added. So, I anticipate the chimney will out last me.



__________________
travelover is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Proper introductions Zachary Introductions 0 04-22-2009 11:28 AM
Is this a 'proper' way to install a new electrical panel? viki412ag Electrical and Wiring 10 04-15-2009 08:54 AM
Proper winterizing techniques watchtower7 Plumbing Forum 3 08-07-2008 08:04 AM
proper way to remove drywall daniel2229 Walls and Ceilings 2 04-21-2008 01:44 PM
Proper application of caulking Therm Plumbing Forum 3 02-22-2008 05:23 PM

Newest Threads

LATEST SPONSOR DEALS