Your cart is empty.

Mastering Concrete Pool Waterproofing: Your Pool's Best Defense

Waterproofing a concrete pool is essential to maintain its structural integrity, prevent leaks and extend the lifespan of the pool. Knowing how to make a concrete pool waterproof ensures that your leisure spot will remain an oasis of relaxation. In this guide, we’ll delve into the step-by-step methods to effectively waterproof a concrete swimming pool.

Assessing the Pool’s Condition

Before waterproofing a concrete pool, it’s vital to meticulously inspect the pool for pre-existing damage. Addressing these issues before you start the waterproofing process is essential to ensure a long-lasting and effective seal. Here’s what you should be on the lookout for:

  1. Cracks and Fissures: Cracks and fissures are among the most common issues in concrete pools. Depending on their size and location, cracks can be a sign of structural problems or simply the result of natural settling. In any case, they provide an avenue for water to seep through and must be repaired before waterproofing.

  2. Spalling: Spalling refers to areas where the top layer of the concrete has chipped or flaked off. Spalling can be a result of freeze-thaw cycles, the use of an improper mix when the concrete was poured or the application of a chemical that reacted adversely with the concrete.

  3. Hollow Spots: Sometimes, the plaster can separate from the concrete shell to create hollow spots that can eventually lead to larger issues if not addressed.

  4. Efflorescence: Efflorescence is a white, powdery residue that appears on the surface of concrete when water inside the concrete reaches the surface and evaporates and leaves salt deposits behind. This is an indication of water seepage.

  5. Rust Stains: If you notice any rust-colored stains on your pool’s surface, it could indicate that the steel reinforcements inside your concrete pool (known as rebar) are corroding. It might be because the rebar is too close to the surface or there’s a crack that is allowing water to reach the steel.

  6. Pooling or Standing Water: If you notice areas where water tends to stand or pool outside the pool, it might indicate a leak or drainage issue.

Repairing these damages will help ensure that your subsequent waterproofing efforts will be effective and long-lasting.

Preparing the Concrete Pool Surface 

Clean the Pool Thoroughly

To ensure that the waterproofing material adheres properly, start by removing all debris, dirt and algae. A clean surface helps to guarantee that the sealant works effectively and will provide maximum protection against water penetration.

Patch All Cracks

Minor cracks can be a gateway for water seepage, and addressing these fissures is pivotal for a waterproof seal. For this task, we recommend using DRYLOK® Masonry Crack Filler. Not only does this product effectively seal cracks, but it also ensures a smooth finish that complements the waterproofing process.

Smooth All Rough Spots

Uneven or rough spots on your pool’s surface can reduce the efficacy of waterproofing materials. Before you proceed, ensure that all rough spots are smoothed out in order to allow uniform application of the chosen waterproofing method.

Choosing the Waterproofing Method

Different pools may require varied waterproofing strategies. Let’s explore the most common methods:

Liquid Membrane

Liquid membrane is a thin coating, usually a primer coat followed by two top coats. It’s easy to install but requires an expert hand for the best results.

Epoxy Coating

Known for its durability, an epoxy coating involves applying a coating that forms a protective layer on the pool’s surface. They are generally two-part coatings.

Cementitious Waterproofing

A popular choice for many pool owners, this method involves using a cement-based mixture. It’s straightforward to apply and doesn’t require specialized knowledge.

The Best Option for Waterproofing a Concrete Pool

DRYLOK Original Concrete & Masonry Waterproofer provides an effective solution for waterproofing concrete pools. This advanced formula not only reduces vapor transmission but also greatly diminishes the risk of radon gas to help ensure a safer swimming environment. It also eliminates the need for initial mixing or pre-wetting for added convenience along with its exceptional water infiltration prevention capabilities.

Impressively tough, it can withstand pressure up to 10 psi, equivalent to a towering water column of 22 feet, to help ensure pool walls stay watertight. That’s not all — pool owners can take advantage of its 10-year, transferable warranty and its ability to withstand rain driven by winds of up to 98 mph. For those who are concerned about aesthetics, it can be tinted to seamlessly blend with your pool’s design.

Applying the Waterproofing Material

Here’s a guide on how to apply DRYLOK Original Concrete & Masonry Waterproofer:

  1. Clean the Surface: Ensure the concrete or masonry surface is clean and remove any dirt, grease or loose particles.

  2. Patch and Fill: Address any holes or cracks with a suitable filler.

  3. Stir the DRYLOK: Before you apply, it’s important to give the product a good stir. Remember not to dilute it. This will ensure the best results and make your application process smoother.

  4. Apply the First Coat: To start waterproofing, gather a ¾‑inch nap roller or a high-quality nylon bristle brush. Apply the first coat of DRYLOK Original Concrete & Masonry Waterproofer, ensuring thorough penetration into the masonry’s pores. Fill all pores and small holes for effective waterproofing. If using a roller, back brush the first coat to ensure proper filling of all pores and small holes.

  5. Let it Dry: Wait for the first coat to dry completely — a minimum of 3 hours.

  6. Apply the Second Coat: Apply a second coat using a roller or brush — a minimum of two coats is required to warranty the waterproofing.

  7. Dry Completely: Let the second coat dry thoroughly before exposing the surface to water. Wait 24 hours before top coating with latex paint.

That’s it! Your concrete or masonry should now be well-protected with DRYLOK.

Curing and Testing

When applying to new concrete, let the concrete cure for 28 to 30 days or reach a pH of below 10 before applying DRYLOK Original Concrete & Masonry Waterproofer.

After application, patience is crucial. The curing time for the waterproofing material can vary depending on the chosen product. DRYLOK Original Concrete & Masonry Waterproofer should be allowed to dry a minimum of 48 hours before refilling the pool.

Once dried, it’s recommended to conduct a water test. Fill the pool and monitor it closely for any signs of seepage or wet spots. This test will help ensure the effectiveness of the waterproofing and give you peace of mind.

Additional Pool Maintenance Tips

Regular Inspection and Reapplication of Waterproofing as Needed

Over time, wear and tear can reduce the efficacy of the waterproofing. Regular inspections help in identifying areas that might need reapplication.

Proper Cleaning, Balancing Chemicals and Maintaining Water Levels

A clean pool with balanced chemicals not only feels great, it also increases the longevity of your waterproofing.

Waterproof a Concrete Pool the Right Way with DRYLOK

A white two-story house features a pool with palm trees incorporated into the landscaping.

At DRYLOK, we understand the ins and outs of waterproofing and provide reliable solutions that stand the test of time. Our Original Concrete & Masonry Waterproofer isn’t just a product — it’s an investment in peace of mind that helps to preserve your pool’s integrity and aesthetic appeal. Don’t let the threat of leaks or cracks interrupt your enjoyment.

Contact us today to find a DRYLOK location in your area!