Concrete gets affected by water seepage through cracks and capillaries, which may develop during the life cycle of the structure. A perfect waterproofing system is needed to stop water from getting in and damaging the rebar in the concrete. An effective cementitious waterproofing system maintains the durability of the structure. The Multiguard range of cementitious coatings is designed to perform as a damp proofing to waterproofing under high water pressures.
Hydronil: Advanced Hydrophilic Crystalline Technology for Watertight Concrete
Hydronil is built on high-quality hydrophilic crystalline technology that ensures watertight concrete. Treatments using Hydronil begin as a surface-applied slurry, dry shake, or admixture. These treatments act as catalysts, triggering a reaction between unhydrated cement particles and water within the concrete. Over time, this reaction generates billions of microscopic crystals that fill pores and capillaries, making the concrete impermeable. This process continues as long as water and unhydrated cement particles are present, ensuring long-term waterproofing and structural durability.
Unlike traditional waterproofing membranes that degrade over time, Hydronil’s crystalline technology becomes an integral part of the concrete matrix, ensuring long-term durability and self-sealing capabilities. Whenever water enters the structure, the active chemicals in Hydronil react to form additional crystals, effectively blocking moisture penetration. This continuous protection makes it an ideal solution for below-grade structures, water treatment facilities, tunnels, basements, and marine environments.
Elastomeric wall coatings are ready-to-use waterproofing layers designed for application in thick films—approximately 10 times thicker than regular paints. These coatings are tough, highly flexible, and capable of stretching as underlying cracks expand and contract. This flexibility allows them to effectively bridge cracks, preventing water ingress while maintaining an aesthetically pleasing finish.
Due to their elasticity, elastomeric coatings are particularly suited for substrates prone to cracking or those exposed to significant thermal expansion and contraction. They can also be tinted in light colors for enhanced visual appeal.
Suitable applications include podiums, terraces, balconies, and areas beneath tile bedding.
Hand-applied polyurea waterproofing is a liquid, two-component coating applied manually to create a seamless, flexible membrane. It offers rapid curing, superior chemical, abrasion, and temperature resistance. Ideal for detailed areas or smaller applications, it provides reliable protection against water infiltration and extreme conditions. It’s uses are expanding due to its seamless and fast-curing properties. Organizations like the Polyurea Development Association (PDA) provide valuable resources on formulation advancements and best application practices. This method is suitable for applications such as water tanks, basements, and roofs requiring precise, custom application.
High-density polyethylene (HDPE) membranes are advanced waterproofing solutions designed for demanding applications, including basements, below-grade, and above-grade concrete structures. These membranes feature a pre-applied pressure-sensitive adhesive, available with sand or liner finishes, ensuring a strong bond with poured concrete. Their weather-resistant protective coating enhances durability, while their ability to withstand substrate settlement ensures long-term performance. HDPE membranes effectively prevent water ingress, making them ideal for terraces, roofs, sunken slabs, and basements where structural movement or cracks are anticipated.
Concrete is an inexpensive, readily available, and versatile material that has been in use for over 100 years. However, it behaves like a hard sponge—being hydrophilic, it absorbs water. A waterproofing system is essential to prevent water ingress and protect the rebar from damage. Integral waterproofing is the most economical, effective, and environmentally friendly alternative to membrane waterproofing.
Concrete, although strong, is also a hard sponge—hydrophilic and capable of soaking up water. Special treatments are needed with specialized waterproofing materials. Multiguard Crystal and PrimeShield are products that react with concrete to form billions of crystals, effectively plugging porosity. Being in liquid form, these products can be easily sprayed or brush-applied on a properly prepared surface. Multiguard EP and AquaBlock are epoxy-based but water-dilutable products with high bond strength. Being water-based epoxy, they can be applied on wet or damp surfaces.
Polyurethane waterproofing is a highly effective and durable solution for preventing water infiltration in both residential and commercial buildings. This liquid membrane forms a seamless, flexible coating that bonds tightly to a variety of surfaces, ensuring long-term protection against leaks and moisture. It is ideal for applications such as roofs, balconies, and terraces, providing resistance to harsh weather conditions, UV rays, and foot traffic. It also offers excellent crack-bridging properties, effectively sealing hairline cracks to prevent water penetration. Its fast-curing nature allows for quick application, minimizing downtime and enabling rapid project completion. Additionally, it is available in both solvent-based and water-based formulations, catering to different environmental and application requirements.
Primers play a crucial role in preparing surfaces before applying polyurea and polyurethane waterproofing systems. They enhance adhesion, seal pores, and create a uniform base for optimal coating performance. Designed for concrete, cement, and various other substrates, primers ensure a durable, seamless, and long-lasting waterproofing application. This essential step significantly improves both the effectiveness and lifespan of the waterproofing system.
PVC (Polyvinyl Chloride) Geo Membranes are single-layer waterproofing solutions featuring two distinct layers: a light-colored layer on one side and a black layer on the other. The light-colored layer aids in identifying any damage during application, ensuring precise installation.
PVC membranes are highly effective in waterproofing tunnels, foundations, and underground sections of buildings and structures. They offer long-term cost savings by reducing the need for remediation, repairs, maintenance, or replacement over the project’s lifespan. Designed for superior waterproofing performance in demanding environments, these membranes are a reliable choice for complex construction projects.
Styrene-Butadiene-Styrene (SBS membranes) are high-performance waterproofing materials widely used in construction for their flexibility, durability, and weather resistance. These elastomeric bitumen membranes are reinforced with polyester or fiberglass, offering exceptional tensile strength and adaptability to structural movements. SBS membranes are ideal for flat roofs, terraces, basements, and below-grade structures, providing excellent protection against water ingress and harsh environmental conditions. Their ease of application and compatibility with various surfaces make them a preferred choice for both new constructions and renovations.
Spray applied polyurea waterproofing is an advanced, high-performance solution that creates a seamless, monolithic, and highly durable barrier against water, chemicals, and mechanical damage, making it an ideal choice for concrete, metal, and geotextile surfaces. Unlike traditional waterproofing methods such as bituminous sheets, cementitious coatings, or polyurethane membranes, polyurea is a fast-curing, flexible, and highly resilient material that offers superior protection in harsh environments.
Polyurea coatings must comply with ASTM standards for durability. Additionally, polyurea is known for its high chemical resistance, making it an excellent choice for waterproofing areas exposed to acids, alkalis, fuels, and industrial chemicals, such as oil refineries, wastewater treatment plants, and chemical storage tanks.
Multichem Group is a pioneering Indian corporation with over three decades of experience in the construction chemical industry. Offering 600+ innovative products, we cater to diverse sectors like infrastructure, industrial zones, coastal applications, and smart cities
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