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quigleybmd

05:31PM | 09/15/06
Member Since: 09/14/06
2 lifetime posts
Bvmisc
I have a relatively newly built brick chimney (about 4 years old),

and I get water into my attic during sustained rains.

I've also had the roof & flashing just redone, and my roofer believes

the problem is with the chimney or crown. The chimney is large (about 3' x 6' x 3' high).

The brick/mortar & crown all seem to be in excellent shape, and there are caps

over the 2 flues. But the crown is very level; there is no flashing between the

crown & the brick; and the crown does NOT extend beyond the brick.

I'm thinking of putting a new crown on top of the existing one, such that it does slope

down from the top, and extends beyond the brick. Does that sound doable?

Can I put a new crown on top of an existing one (there are no cracks or anything;

and it's sealed with a product called 'Crown Saver')? Will it hold?

What kind of cement should I use to build it, and what kind of mortar should I use

to attach it to the existing one? Also, anyone have experience with brick sealants,

like DEFY Masonry Crack & Joint sealant? The chimney was supposedly sealed with

Chimney Saver when it was built, but now I wondering if some of the water is getting

in through the brick & joints. Any other suggestions would be greatly appreciated.

Thanks very much.

Glenn Good

02:00PM | 09/29/06
Member Since: 09/10/03
320 lifetime posts
If you are getting a good deal of water in the attic it sounds more likely the flashing is at fault. Is the flashing a step flashing with counter flashing that is cut into the mortar joints? If not I would have the flashing redone.

Brick sealer would help if you are experiencing only a minor amount of water and it should be noticeable in the attic by wet brick.

If the cap is not cracked I do not believe the problem is with the cap. A rain guard over the chimney would also help with the problem.

Glenn

Moderator: Construction Systems, Foundations, and Masonry & Stone

For more information about me, my qualifications, and/or home inspections please visit my website at:

www.consultationdirect.com

quigleybmd

04:19PM | 10/04/06
Member Since: 09/14/06
2 lifetime posts
Thanks Glenn.

It's not a lot of water ... just enough to be annoying. Yes, there is water on the masonry in the attic - it's concrete block up there, and then brick starting at the roof line. There is step flashing (copper) all around the chimney, and counter flashing over that embedded in the mortar. The step flashing is only 2 1/2 inches out from the chimney though. Is that enough? It's interlaced with the shingles. The slope of the roof is 5/12. I just sealed the brick with DEFY Chimney Saver brick water repellent, and after 2 moderate rains, no water has some it yet. So I'm hoping that's it!! Thanks again.
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