Exterior Basement Waterproofing

Exterior Basement Waterproofing Services Toronto

Exterior Basement Waterproofing

External waterproofing works to prevent water and moisture from entering a home’s foundation, and alleviating the potential for dampness inside the home while protecting the foundation from future deterioration. A key component of any construction process, the benefits of external waterproofing are numerous, while the disadvantages of overlooking exterior basement waterproofing as a necessity can often prove to be disastrous. 


How Does it Work?

Exterior basement waterproofing can be a costly and time-consuming venture, though the overall value and protection waterproofing offers your home marks it a valuable investment. Exterior waterproofing should only be done by professionals, as the process is often more complicated and precise than many homeowners suspect. Exterior waterproofing encompasses excavating the perimeter of the home’s foundation. Once the perimeter has been excavated, old drainage systems are replaced and the foundation examined for signs of cracking and water damage. A rubber membrane is then applied to the foundation along with a second membrane for drainage. These membranes are then covered with loose gravel, in order to facilitate drainage. The excavated area is then filled and compressed to the same level as the surrounding soil.

Problem Areas:

  • The Sill
    All construction projects begin from the foundation up. After the foundation is laid and set, contractors begin to build the structure of the edifice over it. On homes, the sill is the line where the foundation and structure meet. The sill is one problem area where water has the potential to enter if not sealed correctly or should the seal deteriorate over time. 
  • Extension Points
    Similar to the sill, points where newer additions to your home, extensions, and renovations meet, are highly susceptible to leaks. However, water damage stemming from extension points is generally minor and easy to remedy using proper sealants. 
  • Window Wells
    Sitting just beneath ground level, window wells are vulnerable to water damage; particularly those with poor drainage systems. A buildup of water inside a window well can lead to seepage inside and around the window. This can be avoided by regularly replacing damaged window wells and ensuring the existing drainage systems remain clear of debris.
  • Brick Foundations
    Brick foundations often complicate the flow of water. Encompassing numerous air pockets and joints in their mortar brick foundations may become waterlogged. As a result; waterproofing brick foundations can be treated either by internal or external waterproofing, the overlap of which is recommended in order to reinforce any weak points. Because bricks can become easily saturated with water, brick walls may be drilled through in order to expel excess moisture.


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