Basement Waterproofing Warranty

Understanding the Different Types of Waterproofing Warranties

A waterproofing warranty is a legally binding agreement between a company and the owner of a project. It guarantees that the company’s work will be free of defects for a specified period. This warranty provides peace of mind to the customer, assuring them that the product will perform as claimed by the company. If any defects are discovered within the warranty period, the customer can file a claim to recover the cost related to the defective product. Let’s explore the four types of waterproofing warranties commonlyusedin the industry:

Materials-Only Warranty:waterproofing warranty

The most common type of warranty is the Materials-Only warranty. It typically covers the cost of defective materials used in the Baltimore basement waterproofing installation. The warranty duration can range from 5 to 30 years, depending on the company. If any component of the waterproofing system fails within the warranty period, the company will cover the cost of the failed product, including repair or replacement. Most companies do not charge additional fees for this type of warranty.

Labor and Materials Warranty:

Unlike the Materials-Only warranty, the Labor and Materials warranty covers the labor and materials involved in the waterproofing system. When a contractor installs a waterproofing system, this warranty ensures that both the labor and materials are covered if any issues arise within the warranty period. While the manufacturer covers the cost of materials, the contractor is responsible for the labor expenses.

Labor and Materials with Overburden Warranty:

Some waterproofing companies offer a comprehensive warranty that includes labor and materials and coverage for removing and replacing defective product. This warranty is particularly beneficial when the waterproofing system is installed under tile or other hard flooring. In case of a membrane failure, the warranty covers the cost of replacing the membrane, including removing and installing new flooring. It provides greater coverage than the previous warranties mentioned.

NDL Warranty (“No Dollar Limit”):

An NDL warranty is a type of contract that covers all costs associated with repairing or replacing a defective waterproofing system, regardless of the cost. Unlike limited warranties with a maximum claim amount, the NDL warranty guarantees that the company will pay for any necessary repairs or replacements. However, it’s important to note that companies may charge incremental fees for NDL warranties, and the cost may increase as the warranty coverage period extends.

Pre-Qualifications for Obtaining a Waterproofing Warranty

When obtaining a waterproofing warranty for your project, there are pre-qualifications that you need to fulfill. These pre-qualifications ensure the warranty remains valid and provides the expected coverage. Here are some common pre-qualifications required by waterproofing manufacturers:

Factory Training:

To qualify for a warranty, many waterproofing manufacturers require that the product or system is installed by a contractor who has attended and completed “factory training” specific to that particular product or system. Factory training ensures that the contractor knows the correct methodology for surface preparation and installation as provided by the manufacturer. Adhering to the manufacturer’s guidelines minimizes the risk of repairs due to improper installation.

Approved or Factory-Trained Applicators:

Using an approved or factory-trained applicator benefit both the contractor and the owner. It ensures that the manufacturer’s published data for correct installation is followed, minimizing the chances of installation errors. Additionally, experienced factory-trained companies can install the system efficiently and meet established construction schedules and completion dates.

Third-Party Inspections:

In addition to factory training, some manufacturers may require third-party inspections throughout the installation. These inspections serve several purposes:

  • Pre-construction meetings: All parties involved review the project’s scope.
  • Design reviews: The design of the waterproofing system is reviewed to ensure it meets the project’s requirements.
  • “Mock-up” inspections and adhesion test approvals: Before the installation begins, inspections and adhesion tests are conducted to approve the installation process.
  • Observations, inspections, and written reports: Critical installation phases such as surface preparation, primer application, detail work, and base and finish coat applications are observed, inspected, and documented by the third-party inspector.


These third-party inspections help maintain quality control and ensure the waterproofing system is installed correctly.


It’s important to note that pre-qualifications may vary among different manufacturers and products. Therefore, reviewing the specific requirements outlined by the manufacturer offering the warranty is crucial.


Meeting these pre-qualifications ensures that your waterproofing warranty remains valid and provides the expected coverage. It is always recommended to work with reputable contractors knowledgeable about the specific product or system installed and follow the manufacturer’s guidelines for proper installation.

Weighing the Cost vs. Value of a Waterproofing Warranty:

When considering a waterproofing warranty for your project, it’s important to assess the cost versus the value it provides. While warranties can offer peace of mind and protection against defects, they also come with additional costs. Here are some factors to consider when weighing the cost versus the value of a waterproofing warranty:

Coverage Length:

Different warranties offer varied lengths of protection. Longer coverage may seem more appealing, but it’s essential to evaluate the overall quality of the product and installation rather than solely relying on warranty duration. A reputable contractor and manufacturer may provide a shorter warranty period but deliver a quality product and proper installation method.

Additional Cost:

In addition to the base price of the waterproofing solution, companies typically charge an additional fee for warranty coverage. This fee is often calculated based on the square footage of the waterproofing coverage area. Consider the size of your project and calculate the cost of the add-on warranty to determine if it’s a worthwhile investment.

Types of Warranty:

Different types of waterproofing warranties are available, such as materials-only warranties, labor and materials warranties, labor and materials with overburden warranties, and NDL (No Dollar Limit) warranties. Each type offers different levels of coverage and protection. Evaluate your specific needs and the potential risks associated with your project to determine which type of warranty is most suitable.

Scope of Coverage:

It’s important to understand what the warranty covers. Most warranties typically cover the cost of repairing or replacing the waterproofing system if it fails within the specified warranty period. However, warranties may not cover incidental damages or the cost of repairing other areas affected by water damage. Carefully review the warranty terms and limitations to understand what is covered and what is not.

Reputation and Reliability:

Consider the reputation and reliability of the manufacturer and contractor offering the warranty. Look for established companies that use high-quality materials and have a track record of honoring warranty claims promptly and efficiently. This ensures that the warranty holds value and provides the necessary support in case of any issues.

Long-Term Cost Savings:

While warranties come with upfront costs, they can save you money in the long run. A warranty protects against defects and ensures that the manufacturer or contractor will cover the cost of repairs or replacements within the warranty period. This can save you from incurring significant expenses if a problem arises with the waterproofing system.


Ultimately, the decision to invest in a waterproofing warranty should be based on a careful evaluation of your project’s needs, the reputation of the manufacturer and contractor, and the cost versus the value provided by the warranty. Working with reputable professionals and choosing warranties that align with your specific requirements and risk tolerance is essential.

Final Thoughts on Waterproofing Warranties:

While a warranty is beneficial, it’s important to understand its coverage and limitations. Most warranties cover only the cost of repairing or replacing the waterproofing system, typically in the affected areas, and not incidental damages. It’s crucial to read and understand the warranty terms and match them with the project requirements.


If you have any questions regarding waterproofing warranties or need further information, don’t hesitate to get in touch with us. We’re here to help you make informed decisions and protect your project from water damage.


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