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A Guide to Waterproofing Concrete

Are you looking for a piece of reliable information about concrete waterproofing? You’ve come to the right place. In this guide, we’ll discuss everything from what exactly waterproofing concrete is, how best to prepare for it, and even tips on caring for your newly protected surface. Waterproofing concrete can help protect against water damage or staining of your surfaces so read up and learn all about it!

Table of Contents:

What is Waterproofing Concrete?

Waterproofing concrete is a process of applying a protective coating to the surface of the concrete in order to protect it from water damage. This can be done with various types of coatings, such as sealants, membranes, and paints. The main benefit of waterproofing concrete is that it helps extend the life of your concrete by preventing water from seeping into cracks or joints and causing deterioration. It also prevents mold growth and reduces staining caused by moisture accumulation on the surface.

Definition of Waterproofing Concrete

Waterproofing concrete is a process used to protect against water infiltration through porous surfaces like cement or masonry walls and floors. It involves applying a waterproof membrane or sealant over existing surfaces in order to create an impermeable barrier between them and any incoming moisture sources such as rainwater or groundwater. This helps prevent structural damage due to water absorption which can lead to cracking, spalling, efflorescence (salt deposits), and other forms of deterioration over time if left unchecked.

Construction workers with brush applied hydro insulation
Construction worker with brush applied hydro insulation on wall

Benefits Of Waterproofing Concrete

Key Takeaway: Waterproofing concrete can help protect it from water damage and extend its life.
Benefits include:
• Preventing water infiltration through porous surfaces
• Creating an impermeable barrier between moisture sources and the surface
• Preventing structural damage due to water absorption
• Reducing staining caused by moisture accumulation

Preparing for Waterproofing Concrete

Waterproofing concrete is an important step in protecting your property from water damage. Before you begin waterproofing, it’s essential to prepare the surface of the concrete for optimal results. Here are three steps to take before waterproofing:

Clean the Surface of the Concrete: The first step in preparing a concrete surface for waterproofing is to clean it thoroughly. This means removing dirt, debris, and any other contaminants that could interfere with adhesion or cause problems down the line. Use a pressure washer or scrub brush and detergent to remove any stubborn stains or build-up on the surface of your concrete.

Repair Cracks and Holes in the Concrete: Once you’ve cleaned off all dirt and debris from your concrete, inspect it closely for cracks or holes that need repair prior to waterproofing.

If there are any visible cracks or holes present, use an appropriate patch material such as an epoxy mortar mix designed specifically for repairing damaged surfaces before applying a sealant over top.

Apply a Primer to the Surface of the Concrete: After cleaning and repairing any damage on your concrete surface, apply a primer coat before beginning waterproofing procedures. Primers help ensure better adhesion between materials by creating an even base layer upon which sealants can adhere properly without peeling off later on due to poor bonding strength between layers. Make sure you select a primer specifically formulated for use with whatever type of sealant you plan on using so they will bond together effectively once applied over the top of one another.

Properly preparing the surface of the concrete is essential for a successful waterproofing project. Now that you have prepared the concrete, it’s time to apply a waterproof coating.

Key Takeaway: To waterproof concrete properly, you must first clean the surface, repair any cracks or holes, and apply a primer.

Applying a Waterproof Coating to the Concrete

Selecting an appropriate coating for your project is the first step in waterproofing concrete. It’s important to choose a product that will work best with the type of concrete you are working with and the environment it will be exposed to.

For example, if you have a pool deck or patio area that is constantly exposed to water, then a rubberized membrane would be more suitable than an acrylic sealer.

Additionally, some coatings may require additional steps such as primers or base coats before application so make sure you read all instructions carefully before starting any project.

Preparing and mixing the coating according to the manufacturer’s instructions is essential for the successful waterproofing of concrete surfaces. Make sure you follow all directions closely and use only approved tools when mixing and applying products.

If possible, wear protective gear such as gloves and safety glasses during this process as well. Once mixed properly, apply the coating evenly across the surface using either a brush or roller depending on what kind of finish you desire.

Finally, once applied it is important to allow adequate time for drying and curing before use; typically 24-48 hours depending on temperature conditions at the time of application. Regularly inspect your newly waterproofed surface for signs of damage or deterioration over time due to weather exposure or other factors such as foot traffic.

Clean up spills immediately if they occur since they can cause staining which can lead to premature failure of your waterproofing system in the future.

Once you have applied the waterproof coating to your concrete, it is important to allow adequate time for drying and curing before use. After this step is complete, regular inspection and maintenance of your newly waterproofed surface will help ensure its longevity.

Caring for Your Newly Waterproofed Concrete

Caring for your newly waterproofed concrete is essential to ensure its longevity and effectiveness. Before you use the surface, it’s important to allow adequate time for drying and curing.

Depending on the type of coating used, this can take anywhere from a few hours up to several days. During this time, keep people off the surface as much as possible, and don’t apply any additional coatings or sealants until it has completely cured.

Regularly inspecting and maintaining your waterproofed surface is also important in order to identify any potential problems before they become serious issues.

Look out for signs of wear or damage such as cracks, chips, discoloration, peeling paint, or bubbling in the coating itself. If these are present then repairs may be necessary in order to maintain an effective barrier against water penetration into the concrete below.

Finally, cleaning up spills immediately will help protect your waterproofing from becoming damaged by staining or other contaminants that could potentially weaken its effectiveness over time.

Use warm soapy water with a soft cloth when cleaning up spills and make sure not to scrub too hard which could cause damage to the coating itself. Be sure that all surfaces are dry before allowing anyone back onto them again after cleaning up spills or other messes on top of them.

FAQs in Relation to A Guide to Waterproofing Concrete

What is the best way to waterproof concrete?

The best way to waterproof concrete is by using a sealant. Sealants are applied in layers, with each layer providing additional protection against water and moisture.

The most common type of sealant used on concrete is an acrylic-based product that can be applied with a brush or roller. It should be reapplied every few years for maximum effectiveness. Additionally, it’s important to make sure the surface of the concrete is clean before applying any sealant, as dirt and debris can reduce its effectiveness.

What is the mix for waterproof concrete?

The mix for waterproof concrete is a combination of Portland cement, sand, gravel, and water. The ratio of these ingredients will vary depending on the application and desired strength.

Generally speaking, a higher proportion of Portland cement will provide greater water resistance. Additionally, admixtures such as silica fume or pozzolans can be added to increase the durability and water resistance of the concrete mix. Proper curing techniques are also important in ensuring that the finished product is waterproof.

When should concrete be waterproofed?

Waterproofing concrete is an important step in protecting your property from water damage. It should be done as soon as possible after the concrete has been poured and cured, typically within a few weeks of installation.

Waterproofing will help protect against freeze-thaw cycles, saltwater intrusion, and other forms of moisture damage that can occur over time.

Additionally, waterproofing can extend the life of your concrete by preventing cracks and spalling due to water absorption. If you are unsure whether or not your concrete needs to be waterproofed, it’s best to consult with a professional contractor who can assess the situation and provide advice on how best to proceed.


With the right preparation and application of a waterproof coating, you can ensure that your concrete will remain safe and secure for years to come.

We hope this guide to waterproofing concrete has been helpful in understanding how best to protect your investment. If you have any questions about the process, don’t hesitate to reach out to Big Easy Concrete – we’re here to help!

We offer top-notch waterproofing solutions to protect your home or business from water damage. Our experienced team of contractors is committed to providing quality workmanship and unbeatable customer service at an affordable price.

Contact us today for a free estimate on our waterproofing services – we guarantee that you won’t be disappointed with what Big Easy Concrete can do for you!