Using wall filler is a straightforward DIY task that can quickly repair cracks and holes in walls, leaving a smooth surface ready for painting. It involves preparing the area, applying the filler, letting it dry, and then sanding it smooth.
Steps for Using Wall Filler
Here's a general guide on how to use wall filler effectively:
1. Preparation is Key
Before applying any filler, ensure the area is clean and free from loose debris.
- Clean the Hole/Crack: Use a scraper or knife to remove any loose plaster, paint, or dust from around and inside the hole or crack. Make sure the edges are firm.
- Wipe Down: Wipe the area with a damp cloth to remove fine dust, and allow it to dry completely.
2. Choose the Right Filler
Different types of wall filler are suitable for various repair sizes and needs. For instance, as mentioned in the reference, for larger holes (potentially indicated by "Millimeters" and "big hole"), a product like Ronseal Big Hole Filler is recommended.
- Consider Hole Size: Small cracks might just need a standard multi-purpose filler. Larger holes, like those needing a "big hole filler", require something stronger.
- Check Product Features: Some fillers, particularly stronger ones like the referenced Ronseal Big Hole Filler, are designed to be really strong, allowing you to nail or drill into the repaired area once dry.
3. Apply the Filler
Applying the filler correctly helps achieve a smooth finish.
- Mix (if required): Some fillers come ready-mixed, while others need mixing with water. Follow the product's instructions carefully to get the right consistency – usually like a thick paste.
- Apply with a Filling Knife: Use a flexible filling knife or spatula. Scoop some filler onto the knife.
- Press into the Damage: Firmly press the filler into the crack or hole, ensuring it fills the entire void from the bottom up.
- Smooth the Surface: Scrape off excess filler, leaving it slightly proud of the surrounding wall surface. This accounts for any shrinkage as it dries. Use smooth, sweeping motions with the filling knife.
4. Allow to Dry
Drying time varies significantly depending on the type of filler, the depth of the repair, and humidity levels.
- Check Product Instructions: Always refer to the specific drying time stated on the filler packaging. This could range from a few hours to overnight.
- Deep Repairs: Deeper holes will take longer to dry completely. Applying filler in layers might be necessary for very deep repairs, allowing each layer to dry before adding the next.
5. Sand Smooth
Once completely dry, the filler should be hard.
- Use Sandpaper: Wrap medium-grade sandpaper (e.g., 120-grit) around a sanding block for a flat finish.
- Gentle Sanding: Gently sand the dried filler until it is flush and smooth with the surrounding wall surface.
- Fine Sanding (Optional): For a perfect finish, follow up with fine-grade sandpaper (e.g., 180-grit or higher).
- Clean Dust: Wipe away all sanding dust with a dry or slightly damp cloth.
6. Prepare for Painting
Your wall is now ready for the final steps.
- Apply Primer: It's often recommended to apply a coat of primer or a mist coat of paint (thinned paint) over the filled area. This helps seal the filler and prevents the final paint coat from looking dull in that spot.
- Paint: Once the primer is dry, you can paint the wall as usual.
By following these steps, you can effectively use wall filler to repair imperfections and restore a smooth surface to your walls.
