HZ info,

Nature stone coating，with its authentic stone-like texture, is the premier choice for exterior decoration. However, the final finish depends entirely on precise spray gun calibration and standardized operation. To ensure a uniform coating and natural texture—while avoiding common issues like sagging or visible lap marks—contractors must use specialized spray guns and master professional tuning and spraying techniques.

Spray gun tuning is the foundation of success. Calibration must follow the “Air First, Needle Second” principle. Start by opening the air valve fully, then gradually pull back the needle while monitoring the spray pattern until you achieve uniform atomization. If atomization fails despite normal air pressure, dilute the coating with a small amount of clean water. Add water incrementally—excessive thinning will compromise adhesion and texture.

Standardized spraying – the precision in every stroke. Proper technique is vital. Always test and tune the spray gun away from the wall before starting. Prioritize horizontal spraying to ensure a more even coating. Maintain a strict overlap ratio, ensuring each pass covers 1/2 of the previous one to prevent gaps or uneven thickness. When reaching the edges of the wall, slightly angle the nozzle outward. This adjustment creates a feathered edge for seamless transitions at joints, ensuring a flawless and professional aesthetic.

Beginner’s guide – practice makes perfect. For novices, follow the principle of “Start Small, Prime First.” Practice on small sections or scrap boards to master trigger control and spraying rhythm before tackling large areas. When possible, apply a primer first. This not only enhances adhesion between the Natural Stone Coating and the substrate but also provides a stable surface for practice. This approach accelerates skill mastery and guarantees superior final quality.

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