Stucco spray is a simple and inexpensive way to conceal slight blemishes over large expanses of ceiling or walls. Workers typically perform this task using a tool called a "hopper gun," a bucket-like device that connects to an air compressor with a rubber hose. By pushing the trigger, the worker can spray a ceiling or wall with a large amount of material that creates a stucco texture. Several different types of stucco are available, so look for a picture on the stucco mixture's packaging to make sure it provides the look you want to achieve.
Things You'll Need
- Hopper gun
- Air compressor
- Damp sponge
- Bag of stucco powder
- 5-gallon bucket
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Buy the type of stucco that works best for your project. Outdoor applications may require waterproof stucco. Interior applications typically call for plaster-based stucco. Read the product’s packaging carefully to determine its recommended uses.
Connect the hopper gun to the air compressor according to your particular model’s manual. If you rent a hopper gun or air compressor, make sure the tool rental store provides you with clear instructions. Typically, you will have to attach the hopper gun to the air compressor with a rubber hose that has threaded female connectors on each end, similar to a garden hose.
Use a damp sponge to wipe dust and dirt off the walls and ceilings that will receive stucco.
Pour the bag of stucco powder into the appropriate amount of water in a 5-gallon bucket. Follow the manufacturer’s instructions exactly or you may end up with a mixture that is too thick or too thin to apply. Typically, you will have to add stucco powder to 4 gallons of room-temperature water while mixing constantly until the mixture reaches a recommended consistency.
Pour some mixture into the hopper. Use an old board to test your sprayer. Press the trigger to spray the mixture, then adjust the spray nozzle until you reach the desired texture.
Fill the hopper completely. Spray stucco over the walls and ceilings using long, even strokes. The goal is to create a consistent texture over the entire expanse of the project. Typically, you will get the best result by holding the spray nozzle 2 to 3 feet away from the surface and slowly moving your arm, not your wrist. Note that some hopper guns may require more or less distance for best results.
Clean out the hopper gun thoroughly according to the manufacturer's recommendations to prevent a damaging buildup of dried stucco texture in the hose or the hopper's components. Typically, you will have to fill the hopper with water and spray it until the water runs clear.