Causes of Foundation Cracks
Water pressure is one of the most common causes for cracking and bowing concrete. It can push upward “hydrostatic pressure” or push laterally against the foundation wall, especially in colder climates.
Since the footings are supporting the basement walls, and holding up the house, when the soil becomes oversaturated, the footings “settle” causing the walls to crack and the excess weight of the soil can cause the walls to push inward.
On the other hand, not enough moisture in the soil can cause foundation cracks. When the moisture is drawn from the soil, usually as a result of drought, the soil itself will shrink and cause the foundation walls to shift outward and the footings to settle.
Comes from the curing of the concrete or mortar. As it shrinks, cracks develop, usually along the mortar lines, but mostly in the form of vertical cracks, and the possibility that pressure from outside the wall will begin to bow the wall.
Concrete cracks because of changes in humidity and temperature, as it gets hot “concrete expands” as it gets cold, “concrete contracts”. This constant change causes stress fractures in concrete over time.
A good portion of our basement solutions involve sealing poured concrete foundation wall cracks. If you can visibly see seepage coming thru a crack and it’s accessible from inside, a low pressure injection of Polyurethane Foam or Epoxy is used to seal the crack from inside.
American Radon Plus can quote you over the phone and schedule a highly trained technician to repair the crack.
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