One of the key waterproofing methods, liquid-applied waterproofing involves the application of various membrane materials in liquid form. Reliable and long-lasting solutions are essential in construction when it comes to water insulation. In this regard, liquid-applied materials ensure a watertight seal and protect the structure.
So, what exactly is liquid-applied waterproofing, what does it do, and how is it applied? As Construction Chemicals Experts at Baumerk, we’ve answered your most frequently asked questions.
Liquid-applied waterproofing is a method used for both water and moisture protection. In this technique, waterproofing materials are applied directly to the outer surface of the structure. A durable coating layer is then added over it. The system helps maintain temperature control and water resistance within the building.
Waterproofing products come in various forms depending on the insulation needs. Generally, the types of liquid-applied waterproofing are as follows:
Cementitious coatings are commonly used on both interior and exterior surfaces, particularly in basements and water tanks. They are easy to apply and breathable, making them compatible with concrete surfaces. These materials provide strong water resistance while allowing vapor diffusion. Cement-based waterproofing products can be applied easily to many types of surfaces.
Bituminous coatings, with their flexible structure, offer crack-bridging capabilities and are mostly used on dynamic surfaces. They perform well against water in underground structures like foundations and retaining walls. These systems are usually applied with a primer to ensure strong adhesion to the substrate.
For more information, visit our Bitumen-Rubber Based Waterproofing Products page.
Polyurethane-based membranes offer high elasticity and chemical resistance. They are ideal for long-lasting waterproofing in open areas such as terraces, roofs, and balconies. Once cured, they form a flexible membrane that helps prevent cracking.
These systems cure through a chemical reaction and provide a combination of waterproofing and flexibility. They are suitable for areas exposed to constant moisture, such as pools and wet-area floors. These fluid-applied systems offer high durability and excellent mechanical performance.
Liquid-applied waterproofing products may be cement-based, single-component crystalline, cement-acrylic, polyurethane-based, or bitumen-based. These materials are applied to surfaces using brushes, rollers, or trowels. For example, CHIMEX 127 – Cement-Acrylic Waterproofing Material is a highly effective liquid-applied product that can be applied easily by brush.
Liquid membranes help regulate indoor temperature and block water ingress. Applied with various material types, this method reduces moisture and humidity levels on surfaces, enhancing indoor comfort. In general, a liquid-applied waterproofing system performs the following functions:
Both single-and two-component liquid/fluid-applied systems enhance the durability of a structure. Applied with brushes, rollers, or sprays, these membranes contribute to the long-term resilience of buildings.
Liquid-applied waterproofing can be used across a wide range of applications. As part of comprehensive waterproofing strategies, this method is suitable for roofs, walls, and floors. Main application areas include:
Liquid-applied systems are also used to combat moisture and dampness. The specific application depends on the structure's unique features and needs.
This method follows standard steps common in waterproofing applications. Using appropriate materials, the liquid membrane is applied via brush, roller, or spray. The general process includes:
Drying time usually ranges from 4 to 12 hours. Full curing may take over 24 hours. If additional finishing layers will be applied, it is best to wait at least 3 days. With Baumerk’s quality liquid-applied systems, your building will enjoy long-lasting protection against water infiltration.