How To Stop Water Leaking In Your Basement: Some Useful Tips

A wet basement is a common complaint; without question, there are a great many homeowners who’d like to know how to stop water leaking in the basement without calling in the assistance of expensive professional repairmen. The fact is that most basements suffer from moisture seepage, a common side effect of which is the growth of molds and fungi, which can be harmful to humans. Thus it is in fact very important, if you’re ever faced with this problem, to know how to stop water leaking in the basement, and proceed quickly to safeguard the well being of your family.

Waterproofing Your Basement

The simplest and perhaps the most common means of halting basement leaks is to use waterproof paint or hydraulic cement to coat the inside of your basement wall. Either of these will seal the cracks in the walls and stop moisture from seeping into the basement. Both can be sprayed on or applied in sheets.

Problems With Concrete Walls

Of course, there are problems with this approach.

  • Concrete walls finish shrinking and curing over a period of as much as 10 years, during the entire course of which cracks can still appear in the walls, often very rapidly and in response to heavy rains.
  • White powder, or efflorescence, can be a sign of incipient capillary seepage, and suggests that a wall may be in danger of collapse.
  • Paints such as those described above are really just a patch on the problem – they won’t stop further cracks from forming, and won’t prevent leaking when those cracks do appear, and as such don’t constitute a real answer to the question of how to stop water leaking in basement.

The Solution

By far the better solution is to use sealers capable of penetrating deep inside the concrete, chemically reacting with lime and alkalis and expanding into microscopic pores, hardening into a mineral as they do. Sealers of this nature will ensure that your basement is sealed against water, vapor and even radon gas. RadonSeal is capable of working this particular brand of magic inside concrete, without leaving any traces of its work on the surface. It’s a permanent internal seal that contains no chemical solvents. With a quick and easy application of this spray, professionals and DIY enthusiasts alike can solve the problem of waterproofing a basement.


Another great thing about RadonSeal and similar products is that you can use them in a newborn basement or on one that is already leaking. To begin, you need to:

  • Find out where the water’s coming from.
  • Ventilate the area and install a fan or dehumidifier to dry out the area at the source of leak.
  • Spray a liberal quantity of RadonSeal onto the offending areas, and wall will be forever sealed.

Another answer to the question of how to stop water leaking in basement lies in fast setting hydraulic cement. It can fill the cracks or holes even when water is presently leaking through them. After using fast setting cement, you can treat the entire wall with masonry waterproofing. You might need to repeat your application after the next sequence of heavy rains, which should reveal the weak spots in your patch up job.

Baseboard Systems

Alternatively, you can try waterproofing the foundation from the outside. One of the most efficient methods of waterproofing a basement is the installation of a baseboard system. In baseboard systems,

  • A hollow vinyl baseboard collect the water, which is then be drained to a sump pump system.
  • The pump discharges water outside the house, through a pipe extending to an area where water can run downhill, away from your foundations.

This is a great solution for homes with persistent damp problems that can’t be stopped up by conventional means.

Irrespective of the way you choose how to stop water leaking in the basement, you should keep in mind that this is really going to be your biggest hurdle when finishing this part of your home. As such, the job should be done properly, and if you need to call in professional for that purpose, then assure yourself that it’s preferable to pay up now than to have to deal with a serious problem in a few years time. Once you have a waterproof basement, the road is open to remodeling it to create a comfortable space that will add value to your entire home.