What Is the Best Coating for Waterproofing

The selection of the optimal waterproofing coating will be determined by the application, substrate, exposure conditions and performance needs. No coating is always the best in every case, roofs need to be UV resistant, basements need to be resistant to hydrostatic pressure and industrial floors need to be abrasion and chemical resistant. The trick is to find the correct coating chemistry that fits the job. Nantong Yuru Engineering Materials Co., Ltd. is a high-tech company with more than 20 years experience in production of full line of high-quality Waterproof Coating products, Waterproof Membrane, Floor Paint, Polyurethane Polysulfide Sealant, Injection Grout, and Grout Pumps. The following is a comparison of the most suitable coating choice for various waterproofing applications.

Acrylic Waterproof Coating: Best for Roofs and Exposed Surfaces

In the case of roofs, balconies and exterior walls that are directly exposed to the sun, acrylic waterproof coating is usually an ideal option. Acrylic finishes are water-based, simple to apply and are environmental friendly. Their best asset is their high UV resistance, they do not turn brittle, become chalky or yellow even after years of exposure to the sun. Solar heat is also reflected by acrylic coating, to lower building cooling costs.They create an elastic and permeable membrane that lets out the water vapor and blocks out the liquid water. Waterproof Coating line by Nantong Yuru contains high-performance acrylic formulations which are strongly bonded to concrete, metal, wood and existing roofing material. On roofs where there is foot traffic or equipment is placed, we will advise that our Floor Paint is used to provide a protective topcoat and extend service life. Acrylic coatings cannot be used on standing water nor below-grade, but in exposed vertical and horizontal applications, they are an industry favorite.

Polyurethane Waterproof Coating: Best for High-Traffic and Industrial Areas

Polyurethane waterproof coating is better in case durability and mechanical strength are the most important factors. The polyurethane coatings possess excellent abrasion resistance, impact resistance, and chemical tolerance. They suit perfectly on parking decks, industrial floors, loading docks, bridge decks, and any other place that will undergo vehicle traffic or high foot traffic. Polyurethane coating unlike acrylics can be immersion service formulated, therefore they may be used in fountains, water features and secondary containment areas. Floor Paint by Nantong Yuru is a polyurethane based coating which offers waterproofing, as well as giving a tough, slip-resistant surface. In the case of an outdoor parking structure with the need to be UV stable we have aliphatic polyurethane formulations which degrade sunlight. Polyurethane finishes are somewhat sensitive to the preparation of the surface and ventilation must be observed during application, but the finish is one of the most durable waterproofing systems available that can be provided in the market.

Cementitious Waterproof Coating: Best for Below-Grade and High-Humidity Areas

Cementitious waterproof coating can be the most feasible choice with regard to basement walls, foundation slabs, tunnels and water treatment plants. Cementitious coatings are mineral products that bond with concrete and masonry exceptionally well. They are permeable,enabling moisture vapor to escape and liquid water under hydrostatic pressure to be blocked. The cementitious systems can be used on damp surfaces unlike polymer based coatings and this is one of the greatest benefits when below grade. They are also very resistant to aggressive chemicals in the soil, and can be utilized in drinkable water tanks once they are certified. Nantong Yuru has Waterproof Coating products that comprise cementitious products that suit these harsh conditions. In the case of active cracks or joints in below-grade buildings, our Polyurethane Polysulfide Sealant would be recommended to be used as a flexible sealant with cementitious coating or our Injection Grout with a Grout Pump to seal pressurized leaks prior to the coating being applied.

Polyurethane Polysulfide Sealant and Membrane Systems: Best for Joints and Large Areas

Coatings do not satisfy all waterproofing requirements. In the case of moving joints, like expansion joints between concrete slabs, window frames or curtain wall connections, a flexible sealant is necessary. Polyurethane Polysulfide Sealant by Nantong Yuru is the most appropriate material to use in joints that are highly mobile, yet need to be submerged or in the open air. Where continuous coverage is required like in below-grade foundation walls and plaza decks, a Waterproof Membrane (in roll form) offers factory-regulated thickness and a time-tested performance. Liquid coating can best be used on irregular shapes and penetrations whereas sheet membranes can be used on large, flat surfaces. A common practice of many professional contractors is to combine the main field with a Waterproof Membrane, use details and penetrations with a Waterproof Coating and all movement joints with a Polyurethane Polysulfide Sealant. The combination is all-encompassing and long-term.

Why Choose Nantong Yuru for Your Waterproofing Coating?

Founded in 2003, Nantong Yuru Engineering Materials Co., Ltd. is strategically located at the intersection of Nantong, Yangzhou, and Yancheng with the sea, land, and air transport being convenient. Our capital is registered at 81.88 million yuan, with a modern plant occupying 16,888.68 square meters, an annual production of 15,000 tons of waterproof materials. We have become the first in our industry to get ISO9001, ISO14001 and CE certifications. We also hold a second-level qualification in waterproofing contracting and have won several national and building materials industry awards. Acrylic top on a roof, polyurethane on a parking deck, cementitious on a basement, or an entire system with membranes and sealants; we have the product you need supported by design, research and development, technical consulting and on-site building assistance. Get in touch with us today to get the most suitable coating in your waterproofing project.