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Hz info,In exterior wall decoration using imitation stone finishes, liquid rock water-in-water coating and sand-in-water coating are the two main choices.
Although both are water-based, eco-friendly coatings, they differ in composition and application process. This means they offer different features in terms of finish and performance. Choosing the right one is essential to balance aesthetics and practical functionality.
Ingredients and Texture: The Most Direct Differences
Water-in-Water Coating：Water-in-water coating uses water-based resins to wrap tiny pigment particles. The resulting film is thin and smooth, mainly used to mimic the fine, detailed textures of polished marble or granite. Up close, the lines look fluid, but the coating lacks a granular, layered feel.
Sand-in-Water Coating：Sand-in-water coating has a special structure. Its core components are natural colored sand and quartz sand, giving it a higher sand content. The finished film has a natural, uneven texture, accurately replicating the substantial texture of bush-hammered stone. Both from a distance and up close, it looks and feels closer to imitation nature stone.
Performance Advantages: Sand-in-Water Stands Out
When it comes to performance, the sand-in-water coating offers more significant advantages. The water-in-water film is relatively thin, resulting in moderate weather resistance. In extreme conditions like heavy rain or strong UV light, it is prone to fading, with a service life of about 10–15 years.
In contrast, the sand-in-water coating uses the sand particles to create a solid protective layer, which improves weather resistance by 50%. Its salt spray resistance can exceed 1,500 hours, extending its color retention period to 15–20 years. Furthermore, the dense polymer membrane on its surface allows stains to be easily washed away by rain, giving it superior stain resistance.
Their application scenarios are also different as a result. The water-in-water coating is suitable for indoor spaces where a refined, delicate finish is desired, or for commercial buildings in mild climates, such as hotel lobbies or office building facades. Its cost is relatively affordable.
The sand-in-water coating, however, is the essential choice for outdoor environments. It is prioritized for villas, high-end residential complexes, and buildings in regions with heavy sand and dust or large temperature variations. While its initial cost is slightly higher, it offers better overall value (cost-performance ratio).
In short, Limeijia‘s advice is: choose water-in-water coating if you are looking for a fine, smooth finish and need to control costs. Choose sand-in-water coating if you prioritize durability and the texture of natural stone. Neither coating is absolutely superior to the other. Only by considering the architectural style, climate, and budget can you achieve a truly “lifelike” imitation stone effect.
Limeijia Coating Wholesale Cooperation Email: cnlimeijia@gmail.com
Whatsapp: +852 57495052
Limeijia English Independent Website: www.paintslmj.com
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