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Hydrostatic pressure
Hydrostatic pressure is the force of water pushing on a foundation when soil is saturated.
Why it matters
That pressure can push water through small cracks and joints, especially if drainage is poor.
Where people get this wrong
Interior sealants often do not solve hydrostatic pressure. Managing exterior water is usually the main fix. A little foundation crack can leak a lot when pressure is high.
Real-world example
A wet yard presses water against the foundation like a wet sponge against paper. If pressure stays, water finds a way.
Where this hits your build
This matters during site work and foundation. Mistakes here get buried and are expensive to fix later. Pay attention before concrete is poured.
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