I have a brick home and noticed that on the outside walls just above ground
there is a empty space (about 1centimeter) between the bricks & joint that
is not filled up with joint cement. This is conssistent around all home. Is
this done on purpose? If yes, then why? To let wals "breathe"? I am asking
this as I have ant problem in my house and I would like to close all gaps so
ants would not be able to enter house.
You should see similar "open head joints" above doors and windows.
There is - or should be - flashing at these levels to direct moisture
out of the space behind the brick. As "default" says, you must keep
these weep holes open and can deal with insects without closing the
Flashing was probably left out and ants get in between the foundation and
wood sill. If flashing was installed under the walls building paper
properyl the ants would have to walk up inside the wall to your roof to get
in. Unfortunately, many brick walls are defective. There are bug screens
which masons can install while building a weep hole but no oneuses them
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