How to Use an Automatic Mortar Jetting Machine

How to Use an Automatic Mortar Jetting Machine

The automatic mortar jetting machine is an efficient tool for applying cement, mortar, and plaster on walls. It is widely used in construction due to its speed, consistency, and ability to deliver high-quality results. Below is a step-by-step guide on how to use the machine effectively for rendering.

1. Prepare the Surface

• Clean the wall: Remove dust, debris, or loose particles to ensure proper adhesion of the mortar.
• Wet the wall: Lightly dampen the surface to reduce suction and ensure the mortar sticks evenly.
• Repair cracks: Fill any major cracks or holes to create a smooth base before spraying.

2. Prepare the Mortar Mixture

• Select the right mix ratio: The cement-to-sand-to-water ratio depends on the type of finish required.
• Ensure consistency: Use a mechanical mixer to create a smooth and uniform mix. Avoid lumps, as they can clog the machine.
• If you are using pre-mixed dry mortar, follow the manufacturer’s instructions to add water correctly.

3. Set Up the Cement Spraying Machine

• Assemble the equipment: Connect all hoses, nozzles, and power sources (electric, pneumatic, or diesel depending on the machine).
• Fill the hopper: Pour the prepared mortar mix into the machine's hopper.
• Test the flow: Turn on the machine and check that the mortar sprays evenly without blockages. Adjust the flow rate if necessary.

4. Spray the Mortar

• Position the nozzle: Hold the spray nozzle at a consistent distance from the wall, typically 10–15 cm.
• Use smooth motions: Move the nozzle in overlapping horizontal or vertical strokes to apply an even layer.
• Control the thickness: Adjust the machine settings to control the mortar output and thickness (usually 5–15 mm for rendering).
• Work in sections: Divide the wall into manageable sections to maintain uniformity.

5. Finishing the Surface

• Smooth the mortar: After spraying, use a straightedge, trowel, or float to level and smooth the surface for a clean finish.
• Create textures: If a textured finish is desired, use appropriate tools or techniques while the mortar is still wet.

6. Curing

• Allow the mortar to set and dry gradually. Keep the wall damp for 2–3 days to prevent cracking and ensure durability.

Advantages of Using an Automatic Mortar Jetting Machine

• Efficiency: Speeds up application compared to manual rendering.
• Consistency: Ensures uniform thickness and a high-quality finish.
• Labor Savings: Reduces the need for extensive manual work.
• Cost-effective: Minimizes material wastage and long-term labor costs.

Conclusion

Using an automatic mortar jetting machine for rendering modernizes traditional construction methods, saving time, reducing costs, and delivering superior results. While the initial investment may seem high, it improves productivity and ensures the quality of your work, contributing to the success of the project. By adopting this technology, you are investing not only in efficiency but also in long-term performance and client satisfaction.