Guide to Concrete Waterproofing Methods
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Concrete, while durable, is vulnerable to water damage over time. To enhance its longevity and performance, various waterproofing treatments have been developed. These treatments strengthen concrete by reducing its susceptibility to moisture, ensuring it remains robust in diverse environmental conditions.
Most often, concrete waterproofing methods employ structural or chemical treatments to increase the material’s resistance to moisture. When concrete is treated, the ability of water and other liquids to cause degradation is reduced significantly.
There are various approaches to concrete waterproofing, some of them better suited to the complexities stemming from commercial construction. The following guide will give you a thorough idea about the top choices and the reasons why these methods deliver better results than others.
Overview of the Most Common Concrete Waterproofing Methods
The choice of a suitable waterproofing method depends on the complexity of the structure and environmental factors. Professionals typically begin with a detailed inspection to determine the best approach. Here are some of the top techniques:
Cementitious Waterproofing
Cementitious waterproofing involves applying cement-based materials mixed with polymers or additives to seal concrete surfaces. Once cured, this treatment significantly enhances water resistance.
Cementitious waterproofing has various practical applications:
- Internal wet areas, like bathrooms and basements
- Foundations
- Roofs requiring additional water resistance
To give you a better idea about cementitious waterproofing, let’s also take a look at its pros and cons:
Pros | Cons |
---|---|
✔️ Easy to apply | ❌ Poor joint or crack movement tolerance (no flexibility) |
✔️ Cost-effective | |
✔️ Materials required are readily available | |
✔️ Depending on the materials chosen, the coating can be very durable |
Liquid Waterproofing Membrane
A liquid substance is applied to concrete structures and once it dries, it forms a protective layer. The performance and durability of this waterproofing method are both excellent and because of the easy application, the liquid waterproofing membrane method is considered quite versatile.
Some of its most typical applications include:
- Roofs
- External walls
- Balconies and terraces
As far as advantages and disadvantages go, here’s the breakdown:
Pros | Cons |
---|---|
✔️ Very easy to apply | ❌ There may be special application procedures |
✔️ Can be used to cover large surface areas | ❌ Applying only a thin layer will diminish durability |
✔️ Adaptable and versatile | |
✔️ Excellent flexibility | |
✔️ Durable even when concrete is exposed to a lot of moisture |
Bituminous Membrane Waterproofing
This technique uses asphalt-based coatings or sheets to create a waterproof barrier, commonly employed for flat or gently sloped roofs.
The best application of bituminous membrane waterproofing is:
- Flat roofs
- Commercial roofs with minimal slope
As far as pros and cons are concerned, you need to know the following:
Pros | Cons |
---|---|
✔️ Durable | ❌ Not environmentally-friendly |
✔️ Cost-efficient waterproofing method | ❌ Can sustain UV damage |
✔️ Highly water resistant | |
✔️ Can survive extreme weather conditions | |
✔️ The coating is self-healing to some degree |
Polyurethane Liquid Membrane
Polyurethane waterproofing involves mixing a base and a reactor to create a tough, water-resistant layer. It is quick to apply and highly effective in harsh conditions.
Polyurethane liquid membrane waterproofing is suitable for:
- High-traffic areas
- Commercial constructions exposed to harsh environmental conditions
The benefits of this kind of waterproof coating are various and there are also a couple of disadvantages to take into account:
Pros | Cons |
---|---|
✔️ Very durable | ❌ More expensive than other waterproofing products |
✔️ Excellent flexibility | ❌ High curing time |
✔️ Excellent bonding | |
✔️ The structure remains breathable, regardless of the fact it is waterproof | |
✔️ Versatile |
Crystalline Waterproofing
This method uses chemical compounds that crystallise when in contact with water, sealing micro-cracks and enhancing concrete’s toughness.
A few common applications for this waterproofing method include:
- Underground structures
- Foundations
- Concrete structures that are constantly in contact with water
The pros and cons of this method include:
Pros | Cons |
---|---|
✔️ Long lasting results | ❌ Minimal flexibility |
✔️ Low maintenance method | ❌ Application can be time-consuming |
✔️ Very tough, can resist moisture and harsh weather | ❌ Higher initial cost in comparison to other methods |
✔️ Offers long-term protection by addressing micro-cracks | |
✔️ Environmentally-friendly |
Benefits of Choosing the Right Waterproofing Method
As you can see, some differences exist between the various waterproofing methods. These distinctive characteristics make each waterproofing technique more suitable for certain structures and certain environments.
By picking the right type of concrete waterproofing, you’ll get to enjoy the following benefits:
- Enhanced Durability: Tailoring the method to your structure’s specific needs and environmental conditions improves its resistance to wear, cracks, and moisture.
- Cost Efficiency: While some methods may have higher upfront costs, they often provide a better return on investment by reducing repair and maintenance expenses.
- Protection Against Environmental Stress: Proper waterproofing safeguards concrete from erosion, temperature fluctuations, and sunlight, extending its lifespan.
Protect Concrete Structures, Opt for Professional Waterproofing
Waterproofing makes commercial concrete structures last longer, protecting your valuable assets and extending their lifespan. To reap the full range of benefits, you’ll have to choose professional waterproofing solutions that are properly tailored to address your needs.
RCR Services has over 25 years of experience in the application of various specialised concrete waterproofing solutions ranging from liquid-applied membranes to epoxy coatings.
We have extensive know-how and a specialised understanding of commercial concrete structures. Depending on the building’s specifics and other important factors, we’ll recommend the waterproofing method that will maximise durability and offer reliable protection for years to come.
If you believe that a concrete building you own or manage is becoming susceptible to water damage, contact RCR Services now. Let us know what issues you’re dealing with and our expert team will come back with personalised suggestions to remedy the situation.