Concrete Waterproofing: How to Protect Your Property

Concrete is strong, but it’s not immune to moisture. Over time, exposure to rain, snow, and humidity can cause concrete surfaces to show signs of wear. That’s where concrete waterproofing comes in. It’s a proactive step that helps keep your structure solid and dry. 

At Atlantic Restoration, a full-service waterproofing and building restoration company based in New England, we’ve helped countless clients protect concrete in commercial and industrial settings using proven techniques. Whether you manage a parking structure, a utility vault, or a rooftop deck, waterproofing is essential to long-term performance. 

Here’s what you should know about concrete waterproofing, how it works, and why it’s a smart investment. 

What Is Concrete Waterproofing? 

Concrete waterproofing is the process of sealing concrete surfaces to limit moisture infiltration. Concrete might look like a solid material, but it’s actually full of tiny pores. Water can enter these openings over time, which may lead to surface wear and changes in performance. 

Waterproofing blocks this from happening. It forms a protective barrier that helps preserve the surface and maintain the strength of the concrete over time. Different systems exist depending on the setting, including coatings, crystalline technology, and liquid membranes. 

Where It’s Used 

Concrete waterproofing is used in a wide range of places. On commercial properties, you’ll see it applied to: 

• Parking garages 

• Rooftop decks 

• Mechanical rooms 

• Balconies 

• Elevator pits 

• Retaining walls 

• Utility vaults 

These areas are often exposed to moisture, temperature shifts, and heavy wear. Adding waterproofing helps slow down deterioration caused by environmental exposure and keeps your structure performing as intended. 

Popular Waterproofing Methods 

Not all concrete waterproofing is the same. The right system depends on your specific use case, the age of the building, and the conditions it faces every day. 

Surface-Applied Coatings 

These coatings are rolled, brushed, or sprayed onto concrete to create a sealed top layer. They’re typically made from polyurethane, acrylic, or epoxy. The coating fills small pores in the surface and blocks water from getting in. 

This is a common option for flat areas like decks, walkways, and garage floors. It’s quick to apply and usually has a clean, professional finish. Some formulas also offer added slip resistance for improved safety. 

Crystalline Waterproofing 

Crystalline systems are either mixed into new concrete or applied to existing concrete with water. Once in place, they react chemically and form crystals deep within the material, filling in tiny pathways that water would otherwise follow. 

This method is widely used in below-grade applications like basements, utility vaults, and foundation walls. One of the benefits is that it continues to work even years after application by responding to moisture when it appears. 

Liquid Membranes 

Liquid membranes are applied like a paint and cure into a continuous, flexible surface. They’re ideal for covering irregular shapes or hard-to-reach areas. Once cured, they offer seamless protection across the concrete, including around joints, corners, and protrusions. 

This type of waterproofing is ideal for exposed concrete surfaces such as balconies, planters, and elevated decks that require a high-performance, long-lasting seal. 

Why Concrete Waterproofing Is Worth It 

Waterproofing may not be the first thing that comes to mind when managing a building, but it plays a critical role in long-term maintenance and asset performance. 

Preserves Concrete Surfaces 

Waterproofing prevents moisture from entering and affecting the surface texture or internal makeup of the concrete. This helps protect against flaking, scaling, or surface staining and keeps the concrete looking better for longer. 

Reduces Wear from the Elements 

In places where rain, snow, or de-icing salts are common, concrete waterproofing can reduce the impact of daily exposure. It acts as a buffer, slowing down wear caused by changing temperatures and harsh weather. 

Adds Value Over Time 

Buildings with protected surfaces tend to show fewer signs of aging and wear. This translates into less frequent surface treatments and a more reliable building envelope. For commercial or industrial sites, this is part of keeping the property market-ready and efficient to manage. 

Fits Preventive Maintenance Plans 

Many property owners today are prioritizing proactive upkeep. Concrete waterproofing fits well into that approach. It doesn’t just address surface performance today but it also supports the long-term usability of your structures. 

Work With the Right Team 

Atlantic Restoration has specialized in concrete waterproofing and building envelope work for more than 30 years. We work with property managers, engineers, and contractors to evaluate structures and apply solutions that work for the real-world conditions of each site. 

Our team is trained in multiple systems and manufacturers, so we can provide recommendations that match your goals, building type, and schedule. From below-grade foundations to exposed walkways, we handle waterproofing jobs across Boston and the greater New England area. 

Talk to a Waterproofing Expert Today 

If you’re looking to improve performance and reduce environmental wear on your building, concrete waterproofing is the place to start. Atlantic Restoration offers tailored solutions for both new construction and existing structures. Contact our team and schedule an inspection. We’ll help you find the right approach for your property. 

Frequently Asked Questions 

Is concrete waterproof on its own? 

No. Concrete is naturally porous. Without treatment, water and moisture can enter over time. Concrete waterproofing helps seal those pores and limit exposure. 

Can waterproofing be added to older concrete? 

Yes. There are many systems available for existing buildings, including surface coatings and crystalline treatments. Our team regularly applies waterproofing to older garages, balconies, and basements. 

How long does concrete waterproofing last? 

It depends on the method and location. Surface coatings may last 5 to 10 years, while crystalline and membrane systems can last much longer when maintained correctly. 

Does waterproofing affect the appearance of concrete? 

Some products are clear or semi-transparent, while others come in different finishes. Our team can help select a system that fits both the visual and technical needs of your property.