Let me explain the characteristics of non-curing spray machines when used with rubber-modified asphalt.

Release date:

Sep 28,2021

Let me explain the key features of a non‑curing spray machine when used with rubberized asphalt: it effectively seals the capillaries and cracks in the substrate, eliminating leakage issues in the waterproofing layer and significantly enhancing its reliability. Additionally, it addresses compatibility challenges that often arise when combining traditional waterproofing membranes with waterproof coatings.

　　Let me explain it to everyone. Non-curing spray machine What are the characteristics of rubberized asphalt?

　　 Non-curing spray machine

　　 Non-curing spray machine This coating is suitable for applying non‑curing rubber‑modified asphalt, thick‑film coatings, and high‑solid‑content waterproofing materials. Using a high‑pressure pump, it enables uniform application over long distances and in challenging environments such as rooftops, tunnels, basements, and underground garages. Non‑curing spray is a novel waterproofing material formulated primarily from rubber powder, asphalt, and special additives; in its applied state, it remains a paste‑like consistency with viscoelastic properties and exhibits creep behavior. This coating can seal cracks and micro‑pores in the substrate, making it ideal for complex construction sites. It does not harden upon exposure to air, retaining its adhesive characteristics and demonstrating strong self‑healing capabilities—resisting adhesion and delamination—and maintaining excellent bonding performance across a wide temperature range of 1 to 20°C. As a result, it effectively addresses issues such as crack‑induced stress transfer to the waterproofing layer, leading to cracking, flexural fatigue, or premature aging under high‑stress conditions. Moreover, thanks to its viscoelastic nature, it efficiently seals capillary pores and surface cracks in the substrate, thereby preventing water leakage and significantly enhancing the reliability of the waterproofing system. It also resolves compatibility challenges that previously arose when combining traditional waterproofing membranes with conventional waterproofing coatings.

　　Non-Curing Spray Machine Application Procedure

　　1. Construction tools: shot blaster, broom, vacuum cleaner, roller brush, rubber squeegee, heating equipment, coating equipment, drum remover, and soldering pot.

　　2. Construction process: end‑of‑line cleaning, application of end‑of‑line treatment agent, detailed reinforcement, coating with non‑cured rubberized asphalt waterproofing material, detailed patching, installation of composite waterproofing membrane, and final acceptance inspection.

　　3. Construction Requirements

　　1) The substrate must be smooth, dry, free of sanding marks, peeling, and cement laitance. If defects are present, they should be repaired. To enhance the adhesion between the coating and the substrate, an oil-based primer can be applied; coating application should proceed only after the primer has dried. Prior to large‑area painting, detailed joints and other critical areas must be primed and finished according to relevant specifications and design requirements.

　　2) Approximately two hours before coating, activate the heating system and pre‑inject the material to warm it. Once the overall temperature of the coating reaches a workable level (around 120°C), apply the non‑curing liquid rubber waterproofing coating evenly using a dedicated sprayer. During application, if the coating liquefies, perform either spray application or manual scraping—scrape at temperatures below 120°C and spray mechanically at temperatures above 150°C. Adjust the nozzle size according to the specified design thickness to form the waterproof layer in a single pass. Position the nozzle perpendicular to the substrate surface and apply the coating uniformly at a 90° angle. Ensure the coating thickness is as consistent as possible; select an appropriate nozzle based on the design thickness to achieve a seamless, one‑step waterproofing layer.

　　3) After coating a specified area, use the needle‑probe method to measure the coating thickness before laying the coil. If the thickness does not meet the standard or requires localized reinforcement, apply additional coating using a soldering iron and hand‑apply it, followed by scraping to achieve the desired finish. The coating work shall be carried out in stages or by designated zones, with each zone covering an area of 500 to 1,000 square meters.

　　4) Immediately after coating, apply an isolation layer or waterproof membrane to prevent excessive dust from adhering to the coating surface, which could compromise the bond between the coating and the isolation layer or waterproof membrane. At the coil overlap joints, manually trim and seal using a non‑curing rubber‑asphalt coating. Following completion of the work, the waterproof layer must be protected. Heat the non‑curing coating to a specified temperature, then apply it under pressure in an atomized spray onto the substrate, thereby saving time and labor.

　　 Non-curing spray machine That concludes our manufacturer’s explanation. If you’re in need of a non‑curing spray machine, please feel free to contact us!

Requirements for Non-Curing Spray Machines

Next, let’s discuss the features of the Qingfei curing‑free spray machine.