4-5L Mortar Cement Spray Gun with Hopper Bucket

4-5L Mortar Cement Spray Gun for Fast Wall & Stucco Work

This 4-5L mortar cement spray gun with integrated hopper bucket is designed for efficient application of cement-based materials on walls and other vertical or overhead surfaces. Working in combination with an air compressor, it delivers a consistent spray pattern for cement paste, lime slurry, lime mortar and waterproof mortar, helping you cover larger areas in less time and with less manual effort than traditional trowel methods.

The attached hopper holds approximately 4-5 litres of material, reducing refill interruptions on site. Material is drawn from the hopper and propelled through four spray outlets, distributing mortar or plaster evenly onto the substrate. The four-hole design supports rapid, uniform coverage, which is especially useful for base coats, scratch coats and general rendering work. Operation is straightforward: fill the hopper, connect to a suitable air compressor, adjust your air supply, and control the spray via the handle.

The handle is made from zinc alloy for added robustness and resistance to cracking under regular jobsite use. The tool is designed to work with a 3 HP compressor, with a recommended exhaust volume of about 0.6 m³/min and a working pressure of around 6 bar. An air inlet of 3/8" allows connection to standard pneumatic lines. Overall dimensions are approximately 76 × 18 × 18 cm, making the unit compact enough for easy handling, transport and storage while still offering a generous hopper capacity.

By automating material delivery through air pressure and vacuum-assisted feed, this spray gun reduces reliance on manual pumping and repetitive trowel work. This can support more consistent layer thickness, help minimise material waste and limit operator fatigue over longer shifts. It is suitable for construction, renovation and repair tasks where controlled, repeatable mortar or plaster application is required.

Why It's a Smart Choice

• Speeds up application of cement, stucco and plaster compared to manual trowelling, especially on larger wall areas.
• Four-hole spray head and 4-5L hopper support more uniform coverage with fewer refills and less material waste.
• Designed to work with standard air compressors, with a durable zinc alloy handle for reliable use on active jobsites.

FAQ

Q: What type of air compressor do I need?
A: The spray gun is designed to be used with an air compressor of about 3 HP, providing an exhaust volume around 0.6 m³/min at a working pressure of roughly 6 bar. Ensure your compressor and hose fittings match the 3/8" air inlet.

Q: Which materials can I spray with this tool?
A: It is suitable for cement paste, lime slurry, lime mortar and waterproof mortar. Always follow the manufacturer's mixing instructions and avoid aggregates that are too coarse to pass through the spray outlets.

Q: Can I use it for interior and exterior walls?
A: Yes, it can be used on both interior and exterior surfaces, provided the substrate is properly prepared and compatible with the chosen mortar or plaster system.

Q: Is it difficult to operate for one person?
A: The tool is designed for simple operation by a single user. Once connected to the compressor and filled, the operator controls the spray via the handle while adjusting air pressure on the compressor as needed.

Q: How do I clean the spray gun after use?
A: Empty any remaining material, then flush the hopper and spray outlets with clean water (or a suitable cleaning solution compatible with your material) soon after use. Ensure all passages are clear before storage to help maintain consistent performance.