Can Rain Increase Hydrostatic Pressure?

This is a question many people ask. Because water holds so much weight, does it increase the hydrostatic pressure my home is under? In fact, rain and the flooding that often ensues thereafter can have a very significant impact on your hydrostatic pressure.

Here’s what you should know about the impact of rain on hydrostatic pressure in your basement.

  • Flooding Adds More Weight

The weight of water plays a huge part in why flooding is such a problem. Flooding causes damage in all sorts of ways. If you’re seeing extreme flooding outside, you may also be seeing rapidly rushing water, which can be surprisingly destructive.

Water’s inherent weight means that all flooding, whether it’s inside or outside your home, adds additional weight to the hydrostatic pressure your home’s already handling. That’s an important thing to remember in the aftermath of rain.

Remember, you can’t just leave standing water alone in your home or basement. Not only can it cause serious water damage, but it can also weaken the floor because of its tremendous weight.

  • Rain Raises the Height of the Water Table

As rain sinks into the ground, it’s going to raise the height of the water table. Even though this is a temporary raising, it’s still a significant one. The higher the water table than normal, the more hydrostatic pressure you’ll see in your basement.

If you live in an area with a lot of rain, you’ll probably need to invest more in hydrostatic waterproofing. As the rain mounts, it’ll tend to start to soak the ground entirely, which means your basement is now under attack by hydrostatic pressure from all four sides.

Proper hydrostatic waterproofing can actually help with this. You just need to make sure you’ve invested in that hydrostatic waterproofing. 

  • Natural Disasters Can Harm Your Home’s Structure

Another reason rain can increase basement leaks is that natural disasters already impact your home’s structure. That makes for a dangerous one-two hit.

If you’ve gotten lots of wind from a hurricane, it’s going to start weakening your basement’s strength. The rain will then build up additional hydrostatic pressure on your basement. With these two things combined, you’re more likely to experience basement leaking.

After any natural disaster, especially those that were more significant than the ones you normally get, you need to contact JES for an inspection. That way, you’ll make sure there aren’t any new basement leaks.

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