Application scenarios
APPLICATION SCENARIOS
Construction technology
This guide applies to stone-like texture coatings made from synthetic resin emulsion as binder, with natural colored sand and stone powder, applied by spraying.
Pre-Application Preparation
1. Substrate Requirements:
Firm, flat, dry (moisture content < 10%), clean (free of oil, dust), without hollow spots or cracks.
Alkalinity: pH value < 10.
Curing: New plastered walls require standard curing for over 28 days.
2. Environmental Conditions:
Application Temperature: 5℃ ~ 35℃.
Air Humidity: < 80%.
Weather: No rain, snow, or strong wind (stop application if wind speed > 5m/s).
Substrate surface temperature must be at least 3°C above the dew point to prevent condensation.
3. Materials & Tools:
Materials: Special Alkali-Resistant Sealer Primer, Stone-Like Paint (Main Material), Waterborne Topcoat Varnish.
Tools: Air compressor, Special spray gun for stone-like paint (nozzle size typically 6-8mm), Scaffolding, Roller, Brush, Masking tape, Protective film, etc.
Standard Application Steps, Consumption & Intervals
| Construction Steps | Materials | Construction method | Reference dosage (kg/㎡) | Recoating interval (25℃, humidity <75%) |
| Grassroots treatment | —— | Repair and polish | —— | —— |
| Apply primer. | Dedicated alkali-resistant sealing primer | Roller/Spray | 0.10~0.15 | ≥2 hours (after surface drying) |
| Spray-on stone-effect paint | Stone-effect paint (main material) | Spraying | 3.5–5.0 | ≥24 hours (after actual work) |
| Apply a topcoat. | Water-based clear coat | Roller/Spray | 0.10~0.15 | —— |
Consumption Notes
Primer/Topcoat Consumption: May vary slightly depending on substrate smoothness and application technique.
Stone-Like Paint Consumption: This is the **most critical and variable factor.
- 3.5 kg/m²: Suitable for flat surfaces, small granules, thin-film effects.
- 4.0 ~ 4.5 kg/m²: Standard consumption, suitable for most conventional textures like lychee pattern or rock finish
- 5.0 kg/m² or more: Suitable for strong 3D relief effects or large granules. Consumption increases significantly.
Key Points for Spray Operation
1. Spraying Stone-Like Paint:
Stir Thoroughly: Must be stirred thoroughly before use. **Strictly prohibit dilution with water** to avoid delamination or color inconsistency.
Spray Technique: Use the "cross-spray method": spray horizontally first, then vertically. Ensures uniform film thickness, no misses, and consistent color.
Pressure & Distance: Air compressor pressure should be stable at 0.6-0.8 MPa. Maintain a consistent distance of 30-50cm between the nozzle and the wall.
Complete in One Go: The same wall should be sprayed continuously, ideally by one person, to avoid noticeable seams.
Grid Work: Designing and applying in sections defined by grids is recommended. Apply masking tape before spraying to define grids, helping prevent cracking and seam issues.
2. Topcoat Application:
Timing: Must be applied only after the stone-like paint is **completely dry.
Function: Enhances dirt resistance, water resistance, UV resistance, and extends the overall service life.
Method: Apply evenly using a short-pile roller, ensuring complete coverage without misses.
Precautions
- Safety First: Follow safety regulations for work at heights. Wear protective equipment like helmets, safety harnesses, etc.
- Protection: Protect non-painted areas like windows, doors, railings, and glass by masking with protective film before application.
- Batch Procurement: Materials for the same project, especially the main stone-like paint, should be from the same production batch. Reserve 5%-10% extra material for future touch-ups to prevent color differences.
- Tool Cleaning: Clean all equipment and tools thoroughly with water immediately after use to prevent clogging due to cured paint.
luckyma