Transparent self-cleaning protective paint for external walls.

1. Remove and wash off all objects, dust, and loose material from elastic and cement paint coatings or exposed aggregate concrete, sponge-washed exposed aggregate concrete, and tiled surfaces of external walls and allow a drying time of at least 3 days.
2. Fill fine cracks in the construction surface with elastic paint or neutral transparent silicone sealant (fillers must be free of waterproofing agents to prevent impacts on the adhesiveness of the follow-up transparent waterproofing paint). Use elastic putty or cement paste to fill larger depressions and wait until the construction surface is completely dry.
3. Apply 2-3 thin coats of photocatalyst self-cleaning antifouling agent at around 30-60-minute intervals.
4. The product must be applied to external walls and facades with sufficient sunlight exposure to facilitate photocatalyst reactions and achieve optimal self-cleaning effects.