Product Comparison

Sheet Membrance vs. Liquid Appliced

Three primary methods are commonly used in the field of waterproofing: liquid waterproofing, sheet membrane waterproofing, and integral waterproofing. This comparison is specifically focused on liquid waterproofing, which encompasses a range of materials such as cementitious, acrylic, polyurethane (PU), bitumen, and epoxy. Each of these various options possesses distinct features and specific applications that cater to different project needs. A thorough understanding of these differences is essential for making informed decisions in construction and maintenance projects, ensuring optimal results and long-lasting protection.

Sheet Membrane

Advantages

  • Controlled, Guaranteed uniform thickness

  • Robust, self-reinforced

  • No mixing or specialized equipment for application

  • Trafficked immediately

Disadvantages

  • It is challenging and requires skill for installation

  • Complex detailing

  • Requires skilled labour

  • Joints can be a potential weakness

  • Difficult to install at detailing

Liquid Applied

Advantages

  • Seamless

  • Good in complex geometries

  • Quick coverage with spray application

  • Requires good surface preparation

Disadvantages

  • Variable thickness

  • Mixing and application equipment required

  • Longer Cure time with multiple coat requirements

  • Robust system for all areas

Important Considerations

Before choosing a waterproofing solution, there are a few important considerations to keep in mind:

Cementitious 
Cementitious waterproofing systems are composed of a mixture of cement, sand, and specific additives. They form a durable, rigid or semirigid membrane when applied to surfaces such as concrete, masonry, and cementitious substrates. Cementitious systems provide excellent resistance against water penetration and are commonly used for balconies. They can also be applied as a coating to swimming pools as well as water tanks.

Acrylic

Acrylic waterproofing systems consist of a water-based mixture containing acrylic polymers. They offer excellent flexibility, durability, and UV resistance. Acrylic systems can be applied to various surfaces, including concrete and drywall. They are commonly used for roofs, terraces, and external walls, providing reliable protection against water infiltration.

Hybrid PU

Hybrid PU (polyurethane) waterproofing systems combine the benefits of polyurethane and other polymers. These systems exhibit exceptional elasticity, durability, and chemical resistance. Hybrid PU systems are suitable for various applications, including roofs, balconies, terraces and podium decks.

Conclusion

There are about nine different liquid applied waterproofing systems on the market. These systems are created based on factors like their chemistry, where they'll be used, and the surface conditions they will cover. The next sections will provide detailed information about each system, including their features and best uses.