The general rule of thumb is that if there are cracks bigger than one-fourth of an inch in width or stair step cracks in blocks or bricks are evident, it’s time to fix your foundation.
Foundation sealing is one of the steps you want to take when it comes to waterproofing your foundation. Essentially, this will help moisture from getting in through the foundation and send water to the installed drains, instead of pooling and becoming a potential problem. Keep in mind though, you’ll want to consult with a professional because this will look different, depending on what part of the country you live in, and what your weather conditions are like there.
In many cases, a special type of coating and then a drain board is fixed on the outside of the wall and drain tile is set against the foot of it, so that water moves away from the house. Gravel fill that’s sealed by some type of poly membrane is set under the slab to keep extra moisture or any gases from getting into the house.
A drainage system, meanwhile, is also paramount for basement waterproofing, that works in tandem with your sump pump and a dehumidifier. The drainage system and the sump pump keep water from accumulating and pooling, and the dehumidifier helps reduce the humidity in your basement.