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Whether you can reuse a drywall anchor or not depends on the type. Plastic expansion anchors and plastic self-drilling anchors, which expand once screwed into the wall, are single-use only. You can't straighten and reuse them after removing them from the wall.

Metal toggle bolts can be reused, provided you can successfully remove the toggle from behind the wall. Once you remove the bolt, the toggle often falls down and can be difficult to retrieve without removing the drywall.

The average life span for drywall is between 40 and 60 years, although panels can last significantly longer in many cases if it’s well-maintained. Of course, many things can reduce the life span of your drywall, including fire, smoke damage, water, moisture, and physical damage, like dents and holes. Thankfully, you’re likely to get around 50 years of value out of professionally-installed drywall, making the $2,000 you’ll spend on the job well worth it in the long run.

You should wait at least 24 hours between each coat of drywall mud before sanding and adding another coat. This ensures the mud dries completely, although drying time depends on temperature, humidity, and the type of compound used. Lightweight muds dry faster, while heavier all-purpose compounds take longer. Always check for firmness and dryness before sanding or applying the next layer.

To hide drywall edges, you need to properly apply drywall tape and multiple layers of joint compound. These materials hide the seams between drywall sheets and fill the holes from drywall screws, leaving behind a smooth, flat finish to paint over. Apply joint compound smoothly, and finish the job by sanding the walls to make sure you fully hide drywall edges and other imperfections.