Yes, Virginia, you should have weep holes!
The way is is "spozedta be done" is that the foundation should have a
brick ledge. This is a cutaway where 4" along the top of the foundation
or masonry wall or slab is blocked out for 8-12" so that the bricks
start 8-12" BELOW the highest masonry wall or slab. The plate
(generally a 2x6 is you have a 10" wall) is attached to the inside of
the wall, and the brick veneer is started 8-12" below the bottom of the
plate so that water infiltration or condensation does not touch the
plate. The stud wall is built, sheeting (and wrap) put on; brick ties
are nailed to the sheeting/studs, then the brick veneer is built.
YES, there should be weep holes ABOVE the finished landscape surface
outside. The old way was to lay in 5/16 cotton sash rope every 2 feet
in the mortar joint. From the 70s on when nylon was readily available,
I used 5/16 nylon becaue it does not rot and allow bugs and grubs to
enter the wall cavity. Normally these are in the first line of mortar,
under the first course of brick. If the backfill will be higher for
part of the wall, then the rope is omitted for that area, or placed
higher, but should always be below the bottom of the plate.
If your house does not have weep holes you can correct that easily.
Take a long 1/4" masonry drill in a hammer drill and drill them in the
bottom row of mortar. If you were going to stay there, I'd say push
some nylon rope in them. Actually in this case, just drill them with
the 5/32 tapcon drill in a hammer drill. They don't even need to be
1/4" to allow the moisture to weep out. Not many bugs will go through a
5/32 hole
If there is no brick ledge, but only the plate and brick veneerlaying on
the top of a wall, then that may be your problem. A lot of mortar
falls down in the cavity, and it may be making the water run into the
chipboard subfloor.
Kaleb C. Striplin via Mercedes <mailto:mercedes@okiebenz.com>
January 31, 2017 at 4:04 PM
After talking about fixing floors and water intrusion, I did some
research about water intrusion issues and brick, and I saw talk about
how brick work should have weep holes, which are gaps in the mortar
between bricks about every 4-5 bricks to allow water to drain out and
allow air flow to dry out moisture than may get in behind the brick.
In look at my house, I do not see any such weep holes. So, is my
brickwork not done properly? Anybody have experience with such matters?
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