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Machinc
Machinc, General Contractor
Category: Home Improvement
Satisfied Customers: 448
Experience:  Has written home improvement articles since 2008. Earned South Carolina Residential Builders License in 1991.
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Okay moore detail Chimney leaking for 20 years

Resolved Question:

Okay moore detail Chimney leaking for 20 years
Submitted: 1 year ago.
Category: Home Improvement
Expert:  Charles replied 1 year ago.

Charles :

Hello, and thanks for your question! My name is XXXXX XXXXX I am happy to assist you today!!

Charles :

Can you be a bit more specific on where its leaking?

Charles :

Is water getting in when it rains? smoke getting in? I just need a little bit more so I can assist you, Thanks and looking forward to your reply.

Customer:

Leaks with continous rain and if their is wind leaks heavier not instatanious after some time .i have been in attic only 3 feet of space under roof observed the cinder block wet water saturates block before it comes through to ceiling and as i said the bricks are bottom of kill bricks very rustic looking and some bricks are od shaped. Many craftsmen have worked on the roof but to no avail

Charles :

Hello again, Thanks for the info.

Charles :

Chimney leaks are common and very irritating for sure. Most of the times it can actually be a bad flashing that ties the chimney to the roof, or worse no flashing at all

Charles :

The next thing to check would be the brick/mortar seal

Charles :

Is the chimney painted or was it left natural?

Charles :

The last thing to check would be the mortar cap (if there is one)

Charles :

Often times if the mortar was applied wrong or was not the right type of mortar then it can seep into the mortar and eventually end up leaking into the house

Customer:

The flashing is fine what do you mean by brick morter seal ?,not painted, their is a cap had a crack was repaired its like i have been through this many times with professionals but no repair

Charles :

Hello again, I am sorry you have had this problem for so long. I need to ask these questions in order to figure out why its leaking

Charles :

When the chimney is constructed from bricks or blocks they use mortar as an adhesive to hold the brick or block together. The fact that the leak takes awhile to so up after it starts raining tells me that your issue is more likely a slow leak due to a mortar joint/s that are bad or there is one or more bricks / blocks cracked

Charles :

Is the top of the chimney flat or rounded?

Customer:

All joints have been repaired ,the top is rounded

Expert:  Machinc replied 1 year ago.
The first place to check a leaking chimney is
On the roof.
There should be metal flashing around the
Chimney and under the roofing ( shingles)
The flashing is secured to the bricks an roofing
Sealer or tar is applied to seal the top.
Another cause if leaks no matter how goof the
Flashing is location of the chimney.
If the chimney forms a valley then a special piece
Of construction must be built.
This is called. a "cricket"
Ill be back in a few with some links so you can have a
Picture if what I'm talking about
Machinc, General Contractor
Category: Home Improvement
Satisfied Customers: 448
Experience: Has written home improvement articles since 2008. Earned South Carolina Residential Builders License in 1991.
Machinc and 3 other Home Improvement Specialists are ready to help you
Expert:  Machinc replied 1 year ago.
Metal. Cricket
http://www.copper.org/applications/architecture/arch_dhb/flashings_copings/chimney.html




Cricket and flashing with shingles

http://dsbrody.com/masonry-contractor-construction/chimney-cricket-and-flashing/


Properly flashed chimney that does not need cricket.

http://roofingdoctor.net/rp.htm

These should be helpful for understanding the problem.
Expert:  Machinc replied 1 year ago.
Hope these links will be helpful.
It really sounds like you need a "cricket"
but these illustrations should help you
decide.
No matter how good a chimney is sealed
and flashed if it needs a "cricket " and does not have
One sooner or later it will leak.
David. Machado
Expert:  Machinc replied 1 year ago.
Under certain circumstances the chimney
becomes like a dam and in a down pour
The flashing can be completely underwater.
Snow and debri are also caught against the dam
effect and slows the flow of water and can back it up
Over the flashing.
It is not feasible to try and use heavier flashing
instead of a cricket when one is needed.
No flashing will continue to work properly
when it is under water.
Hope this helps
David. Machado

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Machinc
Machinc
Retired
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Has written home improvement articles since 2008. Earned South Carolina Residential Builders License in 1991.