How To Fix Wall Anchor Holes That Are Too Big

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Wall anchors are commonly used to secure heavy objects to walls, such as shelves, paintings, or mirrors. However, sometimes the anchor holes end up being too big, causing the anchor to become loose and potentially damaging the wall. In this article, we will guide you through the process of fixing wall anchor holes that are too big.

Materials Needed

1. Spackle or joint compound

Spackle or joint compound is a paste-like substance used to fill holes and cracks in walls.

2. Putty knife

A putty knife is a versatile tool used for scraping, applying, and spreading various materials, including spackle.

3. Sandpaper

Sandpaper is used to smooth out the patched area after applying spackle.

Step-by-Step Guide

Step 1: Clean the Hole

Start by cleaning the hole with a dry cloth or brush to remove any loose debris or dust. This will ensure proper adhesion of the spackle.

Step 2: Apply Spackle

Take a small amount of spackle or joint compound on the edge of the putty knife and press it into the hole. Make sure to completely fill the hole with the spackle, slightly overfilling it to account for shrinkage.

Step 3: Smooth the Surface

Use the putty knife to smooth out the surface of the spackle, ensuring it is flush with the surrounding wall. This will create a seamless finish once painted.

Step 4: Let it Dry

Allow the spackle to dry completely, following the manufacturer’s instructions. This usually takes around 24 hours, but it may vary depending on the brand and thickness of the applied spackle.

Step 5: Sand the Patched Area

Once the spackle is dry, use sandpaper to gently sand the patched area. This will help achieve a smooth surface and blend the patch with the surrounding wall. Be careful not to sand too aggressively, as it may damage the wall.

Step 6: Remove Dust

Wipe away any dust or debris from the sanded area using a clean, dry cloth. This will ensure a clean surface for painting or further wall treatments.

Step 7: Repaint or Touch-up

If needed, repaint the patched area to match the color of the surrounding wall. Use a small brush or roller for accurate application. Alternatively, you can touch up the area with a matching wall paint to blend it seamlessly.

Step 8: Reinstall the Anchor

Once the patched area is dry and painted, you can reinstall the anchor. If the hole is still too big, consider using a larger anchor or a wall anchor designed for oversized holes.

Step 9: Test Stability

Before hanging any heavy objects, test the stability of the anchor by gently pulling on it. If it feels secure, you can proceed with attaching your desired item. If not, repeat the steps above or consult a professional for further assistance.

Step 10: Final Check

After hanging the object, give it a final check to ensure it is properly secured. Monitor it over time to ensure there are no signs of loosening or damage to the wall.


Fixing wall anchor holes that are too big is a simple process that can be done by following these steps. With the right materials and technique, you can restore the stability of your wall anchors and prevent any potential damage to your walls. Remember to take your time, let the spackle dry properly, and ensure a seamless finish before reattaching heavy objects. Happy fixing!