Efflorescence
This is a white, chalky substance that can be found on basement walls. It isn’t dangerous to humans, as is the case with mold growth (which may look the same). Seeing the problem usually indicated that there is a moisture issue beneath the home. The seepage is likely making its way inside via damaged areas in the concrete of the foundation wall. As the water leaks inside, it starts to evaporate from the surface and it leaves behind a white mineral deposit. Eventually, this moisture can start to damage other areas of the space beneath your home, including wooden supports, floor joists, and anything you may have stored here. It may also spark the development of dangerous mold and bacteria which could make your family sick.
Crack Repair and Exterior Membranes

Basement Problems
To take care of the problem, St. Louis Basement Pros can fill in and seal wall or floor cracks after first repairing the initial cause of the issue. We can also apply an exterior waterproofing membrane to the outside of your foundation wall. This is a dimpled surface which will collect seepage from around the home, and it will send it into a sump pump system where the moisture where eventually be sent out to a safe distance away.
Testimonials
Basement Waterproofing
We live in a house with a full basement that was built in 1915. The house has three full stories. We had noticed a new plaster crack in the second story and wanted to be sure the foundation was stable. The representative came, looked at the foundation and basement, and pointed out a few things we could do ourselves to keep the foundation area dryer. He also told us that the plaster crack was caused by settling from the weight of the house on the support beams in the basement (not basement walls). He explained what they could do to improve the support system in the basement and gave us a quote if we wanted to do the work, but was honest enough to tell us that the house was very stable in its present condition, which is what we really wanted to know.
foundation repair
I had a retaining wall that was in disrepair. They came out and secured and repaired the retaining wall quickly. It is working as it should and looks much better than it did before.
Crawl Space Insulation
They did a good job installing insulation in my crawl space. The crew was punctual and professional.