What To Expect With Exterior Basement Waterproofing

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What To Expect With Exterior Basement Waterproofing

21 December 2023
 Categories: , Blog


A wet basement can be a homeowner's worst nightmare. It causes inconvenience and damage and takes a toll on the property's value. Exterior basement waterproofing is an effective solution to prevent water infiltration and keep your basement dry. However, you may wonder what the process entails. Explore the waterproofing process so you know what to expect during this project.

Inspection and Evaluation

The first step in exterior basement waterproofing is to inspect and evaluate the condition of your basement. A professional waterproofing contractor will visit your property and examine the foundation, walls, and drainage system. They will look for signs of water infiltration, such as cracks, leaks, mold, and moisture. Based on their findings, they will determine the best course of action and recommend a waterproofing solution.

Excavation and Preparation

The next step is to excavate the soil around your foundation walls to expose them entirely. This process creates a trench along the perimeter of your basement, allowing the contractor to access the foundation walls. Excavation also involves removing any obstructions or debris that may interfere with waterproofing. Once the excavation is complete, the contractor will clean the walls and repair any damages or defects.

Application of Waterproofing Membrane

The most critical part of exterior basement waterproofing is the application of a waterproofing membrane. It is a barrier that prevents water from infiltrating through the foundation walls. The membrane is usually made of asphalt-modified polyurethane or rubberized asphalt. The contractor will make sure that the membrane is properly installed and sealed so no water can penetrate the walls.

Installation of Drainage System

After the waterproofing membrane is installed, the contractor will install a drainage system to divert water away from your foundation. The drainage system typically consists of a perforated pipe covered with washed gravel and a filter fabric. The pipe is installed at the bottom of the trench and runs along the perimeter of the basement walls. It is connected to a sump pump which discharges the water away from the foundation.

Restoration and Cleanup

Once the waterproofing and drainage systems are installed, the contractor will restore the soil around the foundation walls. This step involves adding backfill soil and grading the surface to ensure proper drainage. The contractor will also clean up all debris and materials used during the project.

Exterior basement waterproofing is a comprehensive solution to keep your basement dry and moisture-free. The process involves inspection, excavation, applying the membrane, installing drainage, and site restoration. By choosing a professional, reputable contractor, you can expect thorough and reliable waterproofing results that will last years. For more information, reach out to basement waterproofing services near you.