Elastomeric Waterproofing

Are you tired of dealing with water leaks and moisture issues in your building? Look no further than elastomeric waterproofing, a revolutionary solution that provides long-lasting protection against water damage. In this comprehensive guide, we will delve into the world of elastomeric waterproofing, exploring its benefits, applications, and installation process. Whether you are a homeowner, contractor, or building owner, this article will equip you with the knowledge you need to make informed decisions about waterproofing your property.

Understanding Elastomeric Waterproofing:

Elastomeric Waterproofing Basics

Elastomeric waterproofing is a flexible, seamless, and durable solution designed to create a watertight barrier on various surfaces. This type of waterproofing is made up of elastomeric polymers, such as acrylic, polyurethane, or silicone, that provide exceptional elasticity and elongation properties. These characteristics allow the waterproofing membrane to expand and contract with the substrate, accommodating structural movements and preventing cracks. Elastomeric waterproofing is commonly used in construction to seal and protect surfaces, including roofs, walls, foundations, balconies, and even swimming pools.

How Elastomeric Waterproofing Works

Elastomeric waterproofing works by forming a protective membrane that adheres tightly to the surface, creating a seamless barrier against water infiltration. When applied correctly, the elastomeric coating fills in cracks, gaps, and porous areas, preventing water from seeping through. The flexibility of the membrane allows it to withstand structural movements and temperature fluctuations without compromising its integrity. Additionally, elastomeric waterproofing resists UV rays and weathering, ensuring long-lasting protection against the elements.

The Benefits of Elastomeric Waterproofing

Elastomeric waterproofing offers numerous advantages over traditional waterproofing methods:

  • Flexibility: The elastomeric membrane can stretch and contract, accommodating movements without cracking or peeling.
  • Durability: Elastomeric coatings are highly resistant to aging, cracking, and deterioration, ensuring long-term protection.
  • Seamless Application: The liquid form of elastomeric waterproofing allows for easy application, ensuring a seamless and uniform coating.
  • UV Resistance: Elastomeric waterproofing reflects UV rays, preventing premature degradation and extending the lifespan of the coating.
  • Waterproofing Performance: Elastomeric membranes provide excellent waterproofing properties, effectively sealing off surfaces from water infiltration.
  • Energy Efficiency: Some elastomeric coatings have reflective properties, reducing heat absorption and lowering energy costs.

Applications of Elastomeric Waterproofing:

Rooftop Waterproofing

Elastomeric waterproofing is widely used for rooftop applications due to its superior waterproofing capabilities and ease of installation. The elastomeric coating creates a seamless, monolithic membrane that provides a durable and watertight barrier, protecting the building from leaks and water damage. Whether it is a flat roof or a sloped roof, elastomeric waterproofing can be applied to various roofing materials, including concrete, metal, bitumen, and single-ply membranes.

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Foundation Waterproofing

Foundations are particularly vulnerable to water intrusion, which can lead to structural damage and mold growth. Elastomeric waterproofing is an excellent solution for protecting foundations as it adheres tightly to the concrete surfaces, forming a flexible and impenetrable barrier. By applying elastomeric waterproofing to the foundation walls and the footing, you can prevent water from seeping into the basement or crawlspace, ensuring a dry and moisture-free environment.

Balcony and Terrace Waterproofing

Balconies and terraces are exposed to constant moisture, rain, and temperature changes, making them susceptible to water damage. Elastomeric waterproofing provides a seamless and flexible coating that adheres to the surface, preventing water penetration and protecting the underlying structure. The elastomeric membrane can withstand foot traffic, weathering, and UV rays, ensuring long-lasting waterproofing performance for balconies and terraces.

Swimming Pool Waterproofing

Swimming pools require a specialized waterproofing solution to withstand constant exposure to water and chemicals. Elastomeric waterproofing is an ideal choice for swimming pool applications, as it offers exceptional resistance to water immersion, chlorine, and UV rays. The elastomeric coating creates a seamless and durable membrane that prevents leaks and protects the concrete or pool shell from deterioration.

Commercial Building Waterproofing

Elastomeric waterproofing is widely used in commercial buildings to provide reliable protection against water damage. Whether it is an office building, shopping center, or hotel, elastomeric coatings can be applied to various surfaces, including roofs, facades, podium decks, and parking structures. The flexibility and durability of elastomeric waterproofing make it an ideal choice for commercial applications, ensuring long-term performance and reducing maintenance costs.

Preparation for Elastomeric Waterproofing

Before applying elastomeric waterproofing, proper surface preparation is crucial to ensure optimal adhesion and performance. Here are the essential steps for surface preparation:

Surface Cleaning

Thoroughly clean the surface to remove any dirt, dust, grease, or loose particles that may hinder the adhesion of the elastomeric coating. Use a pressure washer, scrub brush, or appropriate cleaning solution to ensure a clean and debris-free substrate.

Surface Repairs

Inspect the surface for any cracks, holes, or damaged areas that need repair. Fill in cracks and gaps with a suitable elastomeric patching compound, ensuring a smooth and even surface. Repair any structural defects or damage before proceeding with the waterproofing application.


Priming the surface is essential to enhance the adhesion of the elastomeric coating. Apply a suitable primer that is compatible with both the substrate and the elastomeric waterproofing product. The primer helps seal the surface, improves bonding, and prevents the absorption of the liquid coating into porous substrates.

Choosing the Right Elastomeric Waterproofing Product

Choosing the right elastomeric waterproofing product is crucial for achieving optimal results. Consider the following factors when selecting a product:

Substrate Type

Different surfaces require specific types of elastomeric waterproofing products. Consider the substrate material, such as concrete, metal, or wood, and choose a product that is compatible with the surface and provides the necessary adhesion and flexibility.

Climate Conditions

Climate plays a significant role in determining the performance of elastomeric waterproofing. Consider the average temperature range, humidity levels, and exposure to UV rays or extreme weather conditions. Choose a product that is designed to withstand the specific climate conditions of your location.

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Desired Finish

Elastomeric waterproofing products come in various finishes, such as smooth, textured, or tinted. Consider the desired aesthetic appearance and texture for the coated surface. Some products also offer reflective properties, which can help reduce heat absorption and improve energy efficiency.

Tools and Equipment for Elastomeric Waterproofing

Having the right tools and equipment is essential for a successful elastomeric waterproofing project. Here are some of the tools you may need:

Surface Preparation Tools

Pressure washer, scrub brushes, scrapers, and cleaning solutions are necessary for effectively cleaning and preparing the surface before applying the elastomeric coating. These tools help remove dirt, debris, and loose particles, ensuring a clean and smooth substrate.

Application Tools

Roller brushes, paintbrushes, or spray equipment can be used to apply the elastomeric waterproofing product onto the surface. The choice of application method depends on the type of product, substrate, and the desired finish. Follow the manufacturer’s instructions for the recommended application tools and techniques.

Safety Equipment

Always prioritize safety during the waterproofing process. Wear appropriate personal protective equipment (PPE), such as gloves, goggles, and respiratory masks, to protect yourself from potential hazards, including chemical exposure and fumes.

Step-by-Step Installation Process

Follow these step-by-step instructions for a successful elastomeric waterproofing installation:

Surface Preparation

Clean the surface thoroughly using a pressure washer, scrub brush, or appropriate cleaning solution. Remove any dirt, grease, or loose particles that may hinder adhesion. Repair any cracks or damaged areas using an elastomeric patching compound.


Apply a suitable primer to the prepared surface, following the manufacturer’s instructions. Use a brush or roller to ensure even coverage. Priming helps improve adhesion and prevents the absorption of the liquid coating into porous substrates.

Application of Elastomeric Waterproofing

Stir the elastomeric waterproofing product thoroughly before application. Use a roller brush, paintbrush, or spray equipment to apply the product onto the surface. Follow the manufacturer’s instructions regarding the recommended application thickness and number of coats. Apply the first coat, allowing it to dry before applying subsequent coats

Drying and Curing

Allow the elastomeric waterproofing to dry and cure according to the manufacturer’s instructions. The curing time may vary depending on the product and environmental conditions. Avoid any foot traffic or exposure to water until the coating is fully cured to ensure optimal performance.

Inspection and Touch-ups

After the coating has cured, inspect the surface for any areas that may require touch-ups or additional coats. Check for any pinholes, uneven areas, or missed spots. Apply the necessary touch-ups to ensure a complete and uniform coating.

Final Inspection and Quality Assurance

Once the elastomeric waterproofing has fully cured and all touch-ups are complete, perform a final inspection to ensure the coating is seamless and free of defects. Check for proper adhesion, uniformity, and coverage. Conduct any necessary quality assurance tests to verify the effectiveness of the waterproofing barrier.

Maintenance and Repair of Elastomeric Waterproofing

To maintain the longevity and performance of elastomeric waterproofing, proper maintenance and prompt repair are essential. Here are some guidelines:

Regular Inspections

Periodically inspect the coated surface for any signs of damage, wear, or deterioration. Look for cracks, blisters, peeling, or discoloration. Detecting and addressing issues early can prevent further damage and extend the lifespan of the waterproofing system.

Cleaning and Maintenance

Keep the surface clean and free of debris, dirt, and vegetation. Regularly remove leaves, branches, or other materials that can accumulate on the roof, terrace, or other coated areas. Clean the surface using appropriate cleaning solutions and methods recommended by the manufacturer.

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Prompt Repairs

If any damage or defects are detected during inspections, address them promptly. Repair any cracks, blisters, or areas of delamination using compatible elastomeric repair products. Follow the manufacturer’s instructions for proper repair techniques and application methods.

Cost Analysis of Elastomeric Waterproofing

When considering elastomeric waterproofing for your project, it’s important to analyze the costs involved. Here are some factors to consider:

Product and Material Costs

Elastomeric waterproofing products vary in price depending on the brand, quality, and performance characteristics. Consider the cost per gallon or square foot of the product, as well as any additional materials required for surface preparation, priming, and repairs.

Labor Costs

The labor costs for elastomeric waterproofing installation depend on the size and complexity of the project, as well as the region and contractor rates. Obtain quotes from reputable contractors to estimate the labor costs associated with the application of elastomeric waterproofing.

Long-Term Savings

Although elastomeric waterproofing may have higher upfront costs compared to other waterproofing methods, it offers long-term savings in terms of maintenance and repairs. The durability and effectiveness of elastomeric coatings reduce the need for frequent repairs and replacements, resulting in cost savings over the lifespan of the coating.

Return on Investment

Consider the return on investment (ROI) of elastomeric waterproofing in terms of the increased lifespan of the protected surfaces, reduced maintenance costs, and potential energy savings. Calculate the potential ROI of elastomeric waterproofing compared to other waterproofing options to determine its cost-effectiveness for your specific project.

Frequently Asked Questions about Elastomeric Waterproofing

Here are some common questions and answers regarding elastomeric waterproofing:

Q: Is elastomeric waterproofing suitable for all types of surfaces?

A: Elastomeric waterproofing is compatible with various surfaces, including concrete, metal, wood, and masonry. However, it’s important to choose a product specifically formulated for the intended surface to ensure proper adhesion and performance.

Q: How long does elastomeric waterproofing last?

A: The lifespan of elastomeric waterproofing depends on various factors, including product quality, surface preparation, application technique, and environmental conditions. High-quality elastomeric coatings can last up to 15-20 years or more with proper maintenance.

Q: Can elastomeric waterproofing be applied to existing coatings?

A: In some cases, elastomeric waterproofing can be applied over existing coatings, provided they are in good condition and compatible with the elastomeric product. Surface preparation and adhesion testing are essential to ensure proper bonding between the existing coating and the elastomeric membrane.

Q: Can elastomeric waterproofing be painted over?

A: Yes, some elastomeric coatings can be painted over with compatible paints. However, it’s important to follow the manufacturer’s recommendations and choose paints that are specifically designed for use over elastomeric coatings.


Elastomeric waterproofing offers a reliable, flexible, and durable solution for protecting your property from water damage. Its versatility allows for application on various surfaces, making it suitable for a wide range of applications, from roofs and foundations to balconies and swimming pools. By understanding the basics, benefits, applications, and installation process of elastomeric waterproofing, you can make informed decisions and ensure a watertight seal that provides long-lasting protection for your property. Invest in elastomeric waterproofing and enjoy the peace of mind that comes with a watertight solution.

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