My house was built in 1952. It has a basement about 60% underground
with some high windows. There are some cracks in one of the walls and
in wet winters, water seeps through the cracks. One crack is 1/16 inch
wide and runs from the window to the floor. Other cracks may be several
feet long, running mostly horizontal, but are thin. Water seeps through
most of them (as evidenced by the stains). I have noticed water on the
floor 2 of the 4 winters I have owned the house. I live in Portland, OR
where we get about 32 inches of rain from October - June. The
temperature rarely drops much below freezing but every once in a while
we have a cold spell with temperatures as low as 10 degrees for a few days.
Can this wall be effectively sealed? What should I use to seal it?
It should be cleaned , loose material removed, acid washed and sealed
with mortar, from both outside and inside. 1/16" isnt going to give you
the working ability to get the mortar in deep, using a chisel to make
the opening wider will help you to get depth on the repair.
You can effectively seal it, but only from the outside. On the inside,
the best you can do is to collect the water and pump it out.
The best thing that you can do is to make sure the ground on all sides
of your home is graded away from your home at least 15 feet. Also gutters
must be routed away from your home at least as far.
With cracks in concrete foundations I have had good results when I
chiseled out so I got the mortar in 3+ inches, sure outside is best, but
this is concrete, not block. Try it, if you get it in deep enough, and
its clean it will bond and seal. Brick or block or stone, take major
work. A few cracks are not a big deal.
Also address drainage
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