How to Use a Mortar Gun for Grouting Tiles

This video shows how to use a mortar gun for grouting porcelain tiles using a Mortar gun (Roughneck Mortar Gun), FUGA-PAVE Flex CH Grout, and the Pedalo cleaning system. You’ll see the full process in real time, including how to apply the grout, clean up efficiently, and get a solid, neat finish.

Grouting Process Overview

• Prep the surface: Make sure the tiles are clean and dry before you start.
• Mix the grout: Follow the instructions on the FUGA-PAVE Flex CH Grout bag to get the right texture—smooth and easy to load into the gun.
• Apply with the mortar gun: Fill the joints carefully, working in sections to avoid waste and get even coverage.
• Clean up: Use the Pedalo to remove leftover grout from the tile surface while it’s still fresh.
• Final checks: Look over the joints, make any needed corrections, and let the grout set properly.

Why Use a Mortar Gun for Grouting?

• Better control: Using a mortar gun makes it easier to fill joints neatly, especially on detailed or uneven surfaces.
• Faster than traditional methods: It saves time on large jobs where pointing by hand would take longer.
• Cleaner results: Less mess around the tiles since you apply the grout directly where it’s needed.
• Works well with FUGA-PAVE and Pedalo: When combined with the right grout and cleanup tools, you’ll get a reliable, tidy finish.

Maintenance Tips

For Grouted Joints

• • Give the joints a quick clean now and then to stop dirt from building up.
  • If you spot any cracks or gaps, refill them with fresh grout using your mortar gun.
  • Don’t pressure wash until everything is fully set—usually a few days, depending on the weather.

For the Roughneck Mortar Gun

1. Rinse It Out After Every Use

• • • • • Flush warm water through the barrel as soon as you finish. This stops leftover grout from hardening inside.
        • Take apart the nozzle, plunger, and seals to clean each piece thoroughly before putting it away.

2. Keep the Barrel and Moving Parts Dry

• • • • • The aluminium barrel won’t rust, but some other parts can. Wipe everything dry after cleaning.
        • If air pockets form when loading, tap the gun gently to release them before you start.

3. Lightly Oil the Mechanism

• • • • • Use a bit of silicone grease or light machine oil on the plunger rod and trigger to keep things running smoothly.
        • Do this every few jobs, especially if you rinse the tool often.

4. Use the Right Type of Mortar

• • • • • Stick with mixes made from soft building sand. A plasticiser can help get a smooth, workable texture.
        • Avoid sharp sand or anything with large bits; it can block the nozzle or wear down parts faster.

5. Check for Wear

• • • • • Look at the rubber plunger, seals, and nozzle regularly. If anything’s worn or cracking, it’s best to swap it out before it causes problems.
        • Keep a few spares handy—especially if you’re using the gun on site often.

6. Store It Somewhere Dry

• • • • • Once the tool is clean and dry, store it in a bag or box to keep out dust and damp.
        • This helps extend the life of the tool and keeps it ready for the next job.

Checklist Recap

• • Flush with water: After every job.
  • Dry thoroughly: Especially inside the barrel.
  • Lubricate moving parts: Now and then to avoid stiffness.
  • Use smooth mortar: No coarse grains or grit.
  • Replace worn parts: Don’t wait for a breakdown.
  • Store dry: Always in a clean, dry place.

This approach works well for both tradespeople and DIY users who want reliable results when laying porcelain paving. Whether you’re working on a patio, a garden path, or any other outdoor area, using the Roughneck Mortar Gun with FUGA-PAVE Flex CH Grout helps you get the job done faster and with a cleaner finish.