Applying joint tape with a Banjo

Need to apply joint tape over a large surface but want to save time? The Banjo, also known as a taping machine, is an exceptionally efficient tool for placing joint tape. It allows you to complete your taping quickly and carefully—as long as you know how to use it properly. Follow the tips and tricks shared by our technical advisor, Jérémy, and learn how to apply joint tape with a Banjo in just a few minutes.

What is a Banjo?

Far from the musical instrument with the same name, the Banjo is a tool designed to apply joint tape to paper-faced plasterboard in significantly less time than manual application. It combines two steps into one: applying compound and laying the joint tape. This time-saving tool is especially valuable for large surfaces.

The Banjo works as follows: a roll of joint tape is placed at the back, then fed through the tool where the compound is stored. As the tape moves through the Banjo, it gets coated with compound and emerges through the opening, ready for application.

Before starting, you need to choose the right compound. Beissier and its technical expert recommend Bagar Airliss J Light, a lightweight ready-mix compound ideal for joint tape treatment and interior smoothing.

Step-by-Step guide to applying joint tape with a Banjo

Prepare the compound:

• Dilute the compound with 10% water and pour it into the Banjo’s container.
• Ensure the container is securely closed to prevent leaks.
• Pull a few centimeters of tape through the Banjo to confirm that it is evenly coated with compound and ready for use.

If everything looks good, you’re ready to start.

Applying flat joint tape:

• Position the coated tape at the top of the seam and simply pull it downward, letting the tape roll out as you go.
• Use a taping knife to smooth the tape, working from top to bottom in the direction of application, then from bottom to top for a clean finish.
• Make additional passes if needed, and use the knife to cut the tape quickly once you reach the bottom.

Applying joint tape in inside corners:

• Switch to the appropriate Banjo attachment for corners. Beissier’s technical expert recommends using a corner roller for this task.
• As with flat seams, position the Banjo at the top of the corner, press the tape onto the surface, and pull it downward.
• After cutting the tape with a taping knife, use the corner roller to press the tape into the corner for a precise fit.
• For smoothing, use a corner smoother instead of a taping knife to achieve a perfect angle. Make several passes along the newly applied tape for the best results.

Final steps

Once all the joint tape is applied, allow it to dry for 24 hours before proceeding with the second coat of compound.