Basement waterproofing is the application of materials to prevent water from penetrating into a basement. Basement waterproofing is crucial, as water seepage can cause foundation damage, mold, decay and other problems.

Homeowners, businesses and landlords should make sure their basement is waterproofed before they buy or lease a building. Institutions, including schools, hospitals and firehouses, should have waterproofing service performed annually to ensure their building is structurally sound and mold free.

Top 10 Best Rated Basement Waterproofing

Basement Systems provides a wide array of essential basement services, including waterproofing, finishing and crawl space repair. Since 1987, Basement Systems' specialists have emphasized honesty and integrity.
For over five decades, Mid-Atlantic Waterproofing has been a go-to home improvement resource from Connecticut to New Jersey. Services include basement waterproofing, mold prevention and crawl space foundation repair.
With more than 65 years in the basement waterproofing business, the experts at Vulcan Basement Waterproofing have successfully completed over 500,000 installations. The company offers state-of-the-art waterproofing technology.
A proud recipient of the NARI Ace Award, Basement Doctor is a trusted resource for basement waterproofing. The Basement Doctor team has fixed and finished Central Ohio's finest basements and crawl spaces for nearly three decades.
Olshan Foundation Solutions has been providing home service for over eight decades. Today, Olshan's services include foundation repair, wall anchoring, exterior water management, crawl space recovery and waterproofing.

The ConsumerAffairs Research Team believes everyone deserves to make smart decisions. We aim to provide readers with the most up-to-date information available about today's consumer products and services.

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What features matter most?

Location and licensing

When hiring a company for basement waterproofing, location and licensing should be key factors. Ideally, customers should hire a business headquartered close to home and well-established in the area as that will make dealing with issues much easier.

  • Service area: Most companies have a designated service area and may charge extra for those outside that geographical range.
  • Contractor arrangements: Some basement waterproofing services work with approved contractors throughout a region or even the whole country. With such companies, customers must be extra cautious when hiring, as less managerial oversight can lead to poorer service.
  • Licensing: Homeowners should confirm businesses and contractors are properly licensed, bonded and insured in their local area.

Pricing

Before hiring a service for the job, get multiple free price quotes. There are a few other pricing factors to understand before selecting a company as well.

  • General calculation method: Basement waterproofing can be costly, and pricing is calculated per foot. Other costs may be added on top of that, such as equipment and parts, product installation, labor and refinishing.
  • Total cost estimate: Basement waterproofing ranges from as low as $200 to $500 for minor repairs and can be as high as $2,000 to $20,000 or more for thorough repairs.
  • Lifetime guarantees: Many companies offer annual waterproofing maintenance at a reasonable rate, so ask any potential companies about their guarantees.

Inspections

With waterproofing, businesses should first provide an inspection. Inspections should cover several factors.

  • High level issues: These types of issues occur when water gets in through the top of the basement, such as through an improperly sealed window well. If rainwater is draining toward the house, water can also come in over the top of the home's foundation/basement wall.
  • Basement wall and floor issues: Inspections should include checking the walls and floors. Many wall and floor issues that lead to water leakage, like cracking and bowing, are caused by hydrostatic pressure (when water presses against the walls). Tie rod holes, air pockets in the concrete, unsecured floor and wall joint bonding, and mortar joint openings can also allow water into basements.
  • Equipment and sealant issues: Sewer pipe leaks, sump pump failures, drain clogs and other malfunctions with equipment all lead to water leakage in the basement. Waterproofing companies should check for this.

Exterior waterproofing services

Exterior waterproofing stops water penetration at the source and is considered a long-term solution.

  • Roof solutions: Waterproofing companies should be equipped to install gutter systems and accompanying downspout systems, which are key to moving water away from the home.
  • Ground-level solutions: Soil near the foundation should always decline away from the house. Waterproofing companies should be capable of modifying issues with the slope of soil and concrete around the house.
  • Exterior excavation: If it is not possible for soil and concrete to decline away from the house, companies should be able to offer exterior excavation. This involves digging down to the foundation wall footer and then replacing the current drainage tiles or putting in a French drain (weeping tile) system.

Interior waterproofing services

Interior waterproofing stops water from entering the basement but does not stop water from draining into the home in general.

  • Crack injections and wall panels: Covering gaps with polyurethane or epoxy coating can effectively prevent water from entering a basement but is not a permanent fix. Installation of plastic wall panels can also fend off water.
  • Interior drain systems: The problem of hydrostatic pressure can be addressed by installing drainage tile and/or piping to route water to a sump pump system. Most reputable waterproofing companies will offer this service.
  • Foundation reinforcement: Though this does not address water control, it makes it more difficult for water to cause structural issues.

Educational tips

It is vital to stop problems before they happen. Basement waterproofing companies should provide building owners with tips to avoid potential water leakage.

  • Cracked and/or buckling walls: Cracks can be in any direction and, if they're widening, a sign of structural damage and heavy pressure. A buckling wall - when the wall is bowing inward -- is caused by hydrostatic pressure and is a strong sign that water is in the process of destroying the foundation.
  • Mold, mildew and moisture problems: Mold and mildew thrive in dark, damp environments, so if there is such growth in a basement, water is getting inside. Some forms of mold are irritants that can cause serious respiratory issues, so waterproofing companies should teach customers how to identify them.
  • Efflorescence: When salt migrates to the outside layer of a porous material, it forms a white, powdery coating. This occurs when water invades the basement through porous construction materials and already-present salt dissolves in that water.

What are different types of basement waterproofing?

Exterior

Exterior waterproofing methods focus on preventing water from entering the house. This is accomplished through excavating, installing drainage systems, the use of gutter systems and sloping soil and concrete away from the foundation.

Interior

Interior waterproofing methods focus on moving out water that has already penetrated the home. This is accomplished through drain tile and pipe setup, sump pump installation and the use of sealant, epoxy and even foundation reinforcement.

Sealants and epoxy injection

Sealant and epoxy injections in cracks on the interior and exterior are a short-term fix. This method is inexpensive and doesn't usually require a contractor's help.

Ventilation and air flow improvement

Excess moisture and humidity can cause a home to be filled with all sorts of contaminants, from molds and mildew to toxins and odors. Many basement waterproofing companies recommend ventilation systems to push out that bad air.

Who's it for?

Homeowners

Every homeowner with a basement should see that it's properly waterproofed to avoid problems.

Landlords

Those who own and lease properties are strongly advised to waterproof their basements. If water damage gives rise to toxic mold or structural issues, there could be losses and liability.

Buildings and institutions

Hospitals, school, firehouses and other buildings rely on the health of their structures. Annual basement waterproofing service can prevent costly repairs and structural fixes.

Businesses

Before buying or renting office or warehouse space, a business should inspect for water damage and make sure the basement is adequately waterproofed. It makes financial sense and ensures employee safety.

Company reviews

  • Mid-Atlantic Waterproofing

    Mid-Atlantic Waterproofing specializes in foundation repair and drying out basements. The long-standing company is known for its reliable residential and commercial services.

    • Lots of experience: With 50 years in the business, few basement waterproofing companies have as much experience.
    • Free home inspections: Customers can get an opinion on their water issues with no obligation.
    • Multiple locations: Mid-Atlantic Waterproofing provides service in nine states from Connecticut to Virginia and Washington, D.C.
    • Top-notch foundation piering systems: For structural repairs, Mid-Atlantic Waterproofing uses the DynaPier® system, considered among the strongest in the industry.
    • Comprehensive services: From mold and mildew prevention to sump pump installation, Mid-Atlantic Waterproofing covers all the bases.
    • Best for Homeowners and businesses who want to prevent or fix water seepage issues.
  • Basement Systems

    Basement Systems provides waterproofing solutions for basements and crawl spaces and also offers refinishing services. The award-winning company's has an extensive network of authorized businesses and contractors.

    • Best for Homeowners dealing with water leaks and those who need refinishing after the job is complete.
  • Basement Doctor

    Based in Ohio, the Basement Doctor has been in business since 1987 and specializes in everything involved with basement waterproofing.

    • Best for Homeowners and businesses looking to prevent water leaks and those in need of financing options.
  • Vulcan Basement Waterproofing

    Vulcan focuses on one thing: basement waterproofing. Established in 1947, the company has a long history in the business. Vulcan services areas of the northeast and mid-Atlantic.

    • Best for Large companies, institutions and homeowners in need of comprehensive basement waterproofing services.
  • JES Foundation Repair

    JES Foundation Repair offers foundation repair, basement waterproofing and crawl space repair services for customers in the Washington D.C. metro area, eastern Virginia and northeastern North Carolina. The company was founded in 1993.

    • Best for Any homeowner in need of waterproofing, those with complex or unique water damage issues and those who require new water control equipment.

  • B-Dry

    B-Dry makes a point of fixing basements that are wet, have cracks, and smell bad. The company's service area covers nearly all of the East Coast, South and Midwest.

    • Best for Homeowners, landlords and business owners who want basement waterproofing services.

  • Olshan Foundation Solutions

    Founded in 1933, Olshan Foundation Solutions offers a range of services in addition to foundation repair and waterproofing. The company operates throughout much of the South and Southwest.

    • Best for Ordinary homeowners, large building owners, businesses and institutions in need of foundation repairs, waterproofing and other services.
  • Trotter Company

    Established in 1929, Trotter Company is an Atlanta-based foundation repair and basement waterproofing company that prides itself on repairs that last a lifetime. Trotter Company has won numerous awards from national and local associations.

    • Best for Regular homeowners, owners of multi-unit homes and small businesses that require cost-effective waterproofing.

  • Stay Dry Waterproofing

    A family-owned company in the Midwest, Stay Dry Waterproofing places value on friendliness, honesty and a gritty work ethic. The company sets itself apart by providing personal attention and unique solutions.

    • Best for Homeowners and businesses who want a waterproofing solution with a solid warranty.

  • Select Basement Waterproofing

    Select Basement Waterproofing aims to provide fast and superior basement waterproofing services. The company services all of New Jersey.

    • Best for Homeowners and small businesses in the New Jersey area.

  • EverDry Basement Waterproofing of Chicago

    EverDry Basement Waterproofing of Chicago specializes in basement waterproofing, foundation repair and clean air ventilation. The company uses tried-and-true methods to create a healthier and more livable environment for homeowners, building owners and businesses.

    • Best for Homeowners with water seepage, mold/mildew, cracked foundations and other issues, and those with asthma and allergies.

  • U.S. Waterproofing

    Serving the Chicago area, northwest Indiana and southeast Wisconsin, U.S. Waterproofing has been in business since 1957 and is recognized as one of the best in the industry in the Midwest. As part of their basement waterproofing services, the company offers sump pump installation, foundation repair, crawl space encapsulation and other services for both homeowners and commercial enterprises.

    • Best for Homeowners with current water seepage issues and new homeowners who want to avoid these problems.

  • AFS Foundation & Waterproofing Specialists

    AFS Foundation & Waterproofing Specialists focus on basement waterproofing offering crawl space repair, foundation repair, concrete leveling and sump pump repair/installation. AFS, a trusted name in the industry since 2000, serves southern Tennessee, all of Alabama and the greater Columbus, Georgia, area.

    • Best for Homeowners who want a foolproof method for waterproofing their basements, those who need other related services and those who want to take advantage of financing options.

11 – 14 Best Rated Basement Waterproofing