Cracking is a common issue that occurs with poured foundations.
Concrete walls will crack due to the release of water
during the curing process (known as shrinkage) or because
of settlement. Cracks will commonly be found near breaks
in the wall (such as windows and beam pockets) or in
the middle of long walls uninterrupted by turns in the
wall. These cracks will not automatically leak but often
do. Surface repairs with rigid products such as hydraulic
cement or epoxy will often fail again within a couple
of years. Proper crack repair requires that the cracks
be fully filled with either epoxy resin or urethane foam.
Urethane injection method can also solve other common
problems with pipe penetrations that leak.
When a pipe is installed through a foundation
wall many contractors seal the remaining gaps with
This cement shrinks when curing and can eventually
provide a means for water to enter the structure.
Additionally vibrations and temperature differences
in the pipe can also cause separation between
the pipe and wall.