Leveling a floor with self-leveling screed is a common and effective method for creating a smooth and even surface. Here are the general steps to level a floor using self-leveling screed:

Materials and Tools You’ll Need:

• Self-leveling floor compound (screed)
• Water (as specified by the manufacturer’s instructions)
• A bucket or mixing container
• A drill with a mixing paddle attachment
• A trowel or smoother
• A notched trowel or squeegee
• Measuring and marking tools
• Painter’s tape
• A primer (if recommended by the screed manufacturer)
• Dust control and cleaning equipment (vacuum, broom, mop)
• Safety gear (gloves, goggles)

Step-by-Step Instructions:

1. Prepare the Surface:
   • Clean the existing floor thoroughly. Remove any dirt, dust, debris, and loose materials. You may need to vacuum, sweep, and mop the area.
2. Plan the Installation:
   • Mark the desired level for the new floor, considering any slope or drainage requirements. Use a laser level or a spirit level for accurate measurements.
3. Prepare the Edges:
   • Apply painter’s tape or use a self-adhesive strip around the perimeter of the room to create a border. This will prevent the self-leveling compound from flowing out of the area.
4. Prime the Subfloor (if necessary):
   • Some self-leveling compounds require a primer. Follow the manufacturer’s instructions for selecting and applying the appropriate primer for your specific subfloor type.
5. Mix the Self-Leveling Compound:
   • Follow the manufacturer’s instructions to mix the self-leveling compound. Typically, you’ll need to combine the powder with water in a clean bucket. Use a drill with a mixing paddle attachment to ensure a smooth and consistent mix.
6. Pour and Spread the Compound:
   • Pour the mixed self-leveling compound onto the floor within the taped perimeter. Work quickly, as the compound sets fast.
   • Spread the compound with a notched trowel or a squeegee, moving it toward the edges of the room. Maintain the desired thickness and level as you go.
7. Level and Smooth:
   • After spreading the compound, use a smoother or trowel to level and smooth the surface. Move it in a back-and-forth motion to eliminate any ridges or uneven areas.
8. Check for Bubbles and Imperfections:
   • While the compound is still wet, check for any bubbles or imperfections. Pop bubbles with a pin or needle and smooth out any imperfections.
9. Allow to Dry:
   • The drying time will vary based on the product you use, so follow the manufacturer’s instructions for the recommended drying time. Typically, it takes a few hours to a day to dry completely.
10. Remove the Border Tape:
    • After the compound has dried, carefully remove the painter’s tape or adhesive strip used to create the border.
11. Check for Final Level:
    • Inspect the leveled surface to ensure it meets your level and smoothness requirements.

Self-leveling screed is an excellent way to create a smooth and even surface for a new flooring installation. Always follow the specific instructions provided by the manufacturer of the self-leveling compound you are using, as products can vary in their mixing ratios, drying times, and other requirements.