Reasons Your Basement Is Leaking

Recent flooding in October 2016 in Windsor and Tecumseh has forced many area residents throughout southwestern Ontario to assess their risks and begin to address their leaking basements – before their house becomes the next home flooded.


Water can enter a basement or crawlspace in any number of ways, and if you’re concerned with moisture in your basement, there is no better service to call than Paul’s Basement Waterproofing. We keep basements dry in Windsor, Essex County, Chatham-Kent, Sarnia-Lambton, and London and the surrounding areas, providing everything from basic interior waterproofing to sump pit and pump installations. One of the key questions our technicians are asked frequently is how and why moisture is leaking into a basement. Here are a few of the more common sources of water entry into your basement:


  • Top of the Foundation/Basement Wall – this happens when the ground is near level, or worse, sloping towards the house, rainwater drains back towards your house, rather than away from it.
  • Window Wells - are both practical and decorative when working properly, but overflowing gutters are a common source of disruption in window wells.
  • Wall Cracks - one of the most serious issues in leaking basements and the cause of the crack needs to be discovered, most likely created by pressure, a level of pressure that is not good for your home’s foundation.
  • Tie Rod Holes - from the original construction of your home can cause basement leaks, especially in older homes.
  • Honeycomb - a cute word to describe air pockets that resemble actual honeycombs created by poorly mixed concrete when it was originally poured.
  • Sewer Pipe – these leaks can be dangerous because they can remain hidden until the issue because more serious and noticeable.
  • Mortar Joint - basement walls constructed of cinder block, brick, stone or wood rather than concrete are built using mortar to hold each individual block in place, and the mortar can deteriorate over time.
  • Water Pipe Conduits - when water line, conduit, or sewer pipes are installed, a hole is drilled through the wall, which should be sealed with a cement water plug on the inside and outside of the hole that was drilled that can eventually leak.
  • Floor Cracks - hydrostatic pressure, a natural effect on your home caused by the weight of water in the ground, can cause cracks in the floor of your basement leading to very serious structural problems.
  • Sump Pump - failing sump pumps from power failure, improper installation, switch problems, lack of regular maintenance, and frozen or clogged discharge lines can cause basement leaks.
  • Floor Drain - sanitary sewer water from a clog in your home’s sewer line or even the municipal sewer line can cause sewer systems to back up into your home’s drain system.
  • Floor and Wall Joint – sometimes, the process of digging and pouring your basement foundation and walls results in an unsecured bond between the footing of your basement and the basement walls.
  • Plugged Drain Tile - wraps around the perimeter of your basement and is made from perforated plastic piping,which is wrapped in a cloth sock that can be damaged by outside forces like tree roots.

There are many reasons a basement leaks, and for each one of them, Paul’s Basement Waterproofing is the answer. Our system not only channels water from saturated cement and block foundation walls to the sump pit, but it also alleviates groundwater. Our service ensures a complete clean up as well as property protection during installation, and we also offer a 15-year written guarantee. So if you are having problems with your basement or crawlspace, contact Paul’s Basement Waterproofing toll free at 1-877-322-2260 for a free estimate. Senior discounts are available.