Hydrostatic pressure could be the reason you have a wet basement. Hydrostatic pressure builds up because of poor drainage in the soil around your home’s foundation. Hydrostatic pressure pushes against your foundation wall and if it isn’t relieved, water will eventually get inside. Hydrostatic pressure can even cause a foundation wall to bow inward and crack—more on this below.
Hydrostatic pressure and how it affects your basement walls
Repairing the damage caused by hydrostatic pressure
- Wall plate anchors – Wall plate anchors are great for bowed, cracked foundation walls. The anchor has three main parts: the inside wall plate, the outside anchor, and the high-strength rod that connects the plate and the anchor. When the rod is torqued, the wall gets pulled outward.
- Carbon fiber wall straps – Carbon fiber is a very strong, virtually unbreakable fabric material. The straps are attached to the sill plate with a galvanized bracket and then attached to the floor using a carbon fiber pin.
- Helical wall anchors (tiebacks) – Helical wall anchors are another way to repair bowing basement walls. They’re drilled through the basement wall from inside. They act like a corkscrew, and as the anchors twist, they pull the wall outward.
- Basement I-beam wall support – I-beams straighten block or concrete walls over time. They’re useful for when wall plates can’t be used because of yard restrictions or other obstacles. No excavation required.