Exterior basement waterproofing involves digging around the foundation, applying waterproofing coatings, repairing cracks, and installing drainage systems to stop water before it enters your basement. This process can be complex, but the benefits are worth it. It provides superior protection, offers a strong, long-term solution that lasts for decades, and helps increase your home’s value.
What is Exterior Basement Waterproofing?
Exterior basement waterproofing is a method that protects your home by stopping water before it ever reaches your basement walls. This process often involves excavation, applying waterproofing coatings, repairing foundation wall cracks, and upgrading drainage systems.
While it can be complex and may require heavy equipment, it offers strong and lasting protection for your foundation. It works best for new homes where waterproofing can be added during construction and for homes located in areas with high water tables or frequent heavy rain.
Benefits
Waterproofing basement walls from the outside comes with several advantages. These include:
- Strong Protection: Stops water before it reaches the foundation.
- Long-Term Solution: Provides strong, long-term protection.
- Ideal for New Homes: Works especially well for new constructions, homes in high water table areas, or regions with heavy rainfall.
- Increased Property Value: Increases your home’s value by preserving the strength of its foundation.
- Additional Usable Space: Allows you to take full advantage of your basement’s available space.
- Peace of Mind: Peace of mind knowing that you have a strong shield against moisture for your basement.
The Full Process Explained
If you are wondering how to waterproof exterior basement walls, here’s an example of the general process used by waterproofing companies.
1. Assessing Your Basement
They start by inspecting the basement of your home. Inside, they look for cracks, damp spots, or mold. Outside, they evaluate the grading of the yard and examine the existing drainage system.
2. Preparing the Work Area
Before beginning the work, they prepare the site to ensure safety and efficiency. They have utility lines marked, clear away any plants or outdoor features that could obstruct the project, and set up safety barriers around the work zone. If excavation equipment is needed, they bring it in and operate it safely while taking precautions for anyone near the area.
3. Excavation
They carefully excavate soil around the foundation walls. Depending on the soil type, site layout, and weather conditions, they may dig in sections or all at once. They make sure the foundation walls are fully exposed down to the footing to allow proper installation of the waterproofing system.
4. Foundation Crack Repair
Once the walls are exposed, they address any cracks or weak spots in the foundation. Depending on the cause and severity of each crack, they may use different repair methods to ensure the foundation is properly protected. This step helps prevent water from entering through damaged areas.
5. Applying Waterproofing Materials
They apply waterproofing coatings or membranes to the foundation walls. They prepare and clean the surface, apply a primer if the product requires it, and install a waterproofing solution following the manufacturer’s instructions. They allow sufficient time for the coating to dry completely before moving to the next stage.
6. Installing Drainage Systems
They install a drainage system to direct water away from the foundation. A drainage board is placed against the wall, and a perforated pipe is set at the base of the footing. They surround the pipe with gravel to promote water flow and connect it to either a sump pump or a daylight drainage point to move water safely away from the home.
7. Backfilling and Finishing
Finally, they restore the soil and landscaping around the foundation. They backfill the excavation with gravel and soil, compact it to prevent settling, and grade the ground so water slopes away from the house. They may also replant grass or other landscaping to return the yard to its original appearance.
They can also install gutters and downspouts to move water at least 5 feet from your house. Deep-rooted plants can also be planted to provide additional moisture control, but these additions can vary depending on the service provider.
Common Mistakes in Exterior Foundation Waterproofing
Common mistakes can occur during exterior foundation waterproofing if the company is inexperienced or overlooks important steps. A knowledgeable provider should identify these issues and recommend solutions during their assessment and procedure.
Not Allowing Proper Drying Time After a Flood
They emphasize that the basement must be completely dry before any waterproofing work begins. This step makes it easier to spot additional leaks or problem areas that also need attention, ensuring the waterproofing system addresses every issue effectively.
Ignoring Exterior Drainage Issues
They check for exterior factors that could direct water toward the foundation, such as downspouts that empty too close to the house or soil that slopes inward towards the foundation. Addressing these issues is critical to preventing water from pooling near the foundation and causing water damage down the line.
Ignoring Essential Maintenance Tasks
They recommend keeping gutters clear of leaves and debris so water flows away from the home instead of pooling near the foundation.
In winter, it is also important to check the sides of the house when clearing snow. Snow piled against the foundation will eventually melt, and if it melts quickly, it can put significant pressure on the exterior of the basement.
Draining Flooded Basements Too Quickly
They caution against removing water from a flooded basement too quickly. Sudden water removal can cause the soil around the foundation to settle unevenly, potentially creating cracks. They advise slowly draining the water over several days to give the soil time to adjust and protect the foundation from long-term damage.
Signs Your Home Needs Basement Waterproofing
There are several signs that your home may need exterior waterproofing. These are some common indicators that we’ve found after servicing over 80,000 basements during our 39 years of experience in the basement waterproofing industry.
- Visible Water: Flooding, puddles, or water stains are some of the most common indicators that water is entering your basement.
- Musty Smell: Excess moisture in the air creates a damp, musty odor. Left untreated, this environment can encourage mold, mildew, and even rust.
- Wall or Floor Cracks: Water pressure around your foundation can build up over time, eventually causing cracks in the basement walls or floor.
- Mold and Mildew: Damp conditions in a basement provide the perfect environment for mold and mildew to grow.
- Rust Formation: Tools, appliances, and metal components stored in a damp basement can develop rust due to high humidity.
- Bowed Walls: Long-term water pressure can cause basement walls to bow inward, which may indicate serious structural stress.
- Efflorescence: When water evaporates from basement walls, it can leave behind a chalky, white mineral residue known as efflorescence.
- Warped Doors: Wooden basement doors may swell and warp as they absorb excess moisture, making them difficult to open or close.
- Insect Issues: A damp basement creates an ideal habitat for insects to nest and multiply.
- High Water Table or Frequent Heavy Rains: Homes in areas with a high water table or regular heavy rainfall are more likely to experience water intrusion and benefit from exterior waterproofing.
Learn more by visiting our article on: Should I Waterproof My Basement?
Professional vs. DIY Basement Waterproofing
While tackling basement waterproofing yourself might seem like a cost-effective solution, the reality is often more complex. Moisture problems only worsen over time, and exterior waterproofing in particular requires heavy equipment, technical knowledge, and precise work.
Over the years, we’ve seen many homeowners try DIY solutions, but these usually provide only temporary relief rather than lasting results.
Professional waterproofing specialists offer several advantages, such as:
- Accurate Diagnosis: They have the tools and knowledge to identify and treat underlying problems.
- Efficient Completion: Their experience allows them to finish complex projects quickly.
- Safety Expertise: They are trained to handle risks like mold exposure and heavy equipment.
- Financing Options: Many companies provide flexible payment choices.
- Warranties and Protection: They offer long-term peace of mind through warranties.
EverDry Toledo also provides unique benefits for homeowners in Ohio, Michigan, and Indiana, including:
- Free Inspection and Consultation: Helping you understand your basement’s condition at no cost.
- Customized Proposals: Tailored solutions designed for your specific home.
- Certified Professionals: Experienced specialists handling every project.
- Comprehensive Services: A one-stop shop for all waterproofing needs.
- Award-winning Service: Recognized for quality and customer care.
- Patented Technologies: Advanced solutions available only through EverDry Toledo.
How To Hire a Basement Waterproofing Company
Choosing the right waterproofing contractor is just as important as the work itself. Here are some steps to follow:
- Check online reviews
- Ask for references from past clients
- Request examples of similar projects
- Verify qualifications and certifications
- Discuss the waterproofing methods they recommend
- Get a detailed written estimate
- Understand if they provide a guarantee or warranty
- Compare contractors to find the one that best fits your needs
DIY-Friendly Waterproofing Tasks
While major waterproofing projects should be left to professionals, there are smaller maintenance tasks you can manage on your own to help keep your basement dry.
- Regular Gutter Maintenance: Keep gutters clear of leaves and debris to ensure water flows away from the foundation.
- Strategic Landscaping: Slope the soil away from your home so water drains naturally instead of pooling.
- System Check-ups: Inspect your basement once in a while to check for leaks or damp spots so you can address small problems before they grow.
Factors Affecting Costs
Understanding what affects exterior basement waterproofing costs can help you set realistic expectations for your project.
- Basement Size: Larger basements require more materials and labor, which raises costs.
- Existing Water Damage: Any mold, rot, or moisture issues must be repaired before waterproofing begins.
- Foundation Cracks: Cracks in walls or floors need sealing first to prevent new water intrusion.
- Location: Your area impacts flood risk, labor rates, permits, and inspection fees.
- Waterproofing Method: Different techniques come with varying material and labor expenses.
- Gutters: Properly functioning gutters and downspouts help prevent water from pooling near the foundation.
- Egress Windows: Finished basements used as living spaces should have egress windows with window wells in case of emergencies, which add to costs.
- Project Complexity: The difficulty and time needed to complete the job can affect the final cost.
Frequently Asked Questions
Homeowners often have questions about exterior foundation waterproofing.
Should a Basement Be Waterproofed During Construction?
Yes, waterproofing during construction is both practical and cost-effective. It is easier and less expensive to install membranes and drainage systems while the foundation is being built rather than digging everything up later. In addition, moisture problems may take years to appear, so early waterproofing prevents unexpected damage down the road.
Can Exterior Waterproofing Fail?
Exterior waterproofing can fail if it is not done correctly or if poor-quality materials are used. That is why relying on experienced professionals who use proven techniques and durable products is so important for long-term protection.
How Long Does Exterior Basement Waterproofing Last?
The lifespan of exterior waterproofing depends on the method, materials, and workmanship. When high-quality products are applied properly, they can protect your basement for decades. Drainage systems such as drain tiles can even last as long as the foundation itself when installed and maintained correctly. Regular upkeep and timely repairs also play a key role in extending the life of your system.
Can Exterior Waterproofing Increase Property Value?
Yes, a professionally waterproofed basement can raise a home’s value by up to 10 percent or more. A dry, protected basement reassures buyers that the foundation is sound and provides extra functional space, making the property more attractive on the market.
Schedule Your FREE 20-Point Inspection
EverDry Toledo is a premier provider of exterior basement waterproofing, proudly serving homeowners across Michigan, Ohio, and Indiana since 1986. With more than 80,000 basements serviced, our reputation speaks for itself.
Schedule your FREE 20-point basement inspection with us today and take the first step toward a healthier home.
