Tools and Materials You Will Need

1. Before you begin, gather the following tools and materials:
2. Utility knife or razor blade
3. Putty knife or scraper
4. Adjustable pliers or wrench
5. Bucket or container
6. Silicone caulk remover (optional)
7. Safety goggles and glove

 Step-by-Step Instructions

1. Safety Precautions: Start by ensuring your safety. Wear safety goggles and gloves throughout the process to protect your eyes and hands.
2. Turn Off Water Supply: Before you begin, turn off the water supply to the sink. This can usually be done by shutting off the water valves located under the sink or at the main water supply.
3. Disconnect Plumbing: Using adjustable pliers or a wrench, disconnect the water supply lines and the drain pipe from the sink. Have a bucket or container ready to catch any water that may drain out.
4. Remove Sink Clips (if applicable): Check if there are any clips securing the sink to the countertop. If so, remove them using a screwdriver or pliers.
5. Cut Away Excess Caulk: Use a utility knife or razor blade to carefully cut away any excess silicone caulk around the edge of the sink where it meets the countertop. Take care not to scratch the countertop surface.
6. Insert Putty Knife: Gently insert a putty knife or scraper between the sink and the countertop. Begin prying the sink away from the countertop, starting from one side and working your way around. Be patient and avoid using excessive force to prevent damage.
7. Apply Silicone Caulk Remover (Optional): If the silicone caulk is stubborn and won't easily release, you can apply a silicone caulk remover as per the manufacturer's instructions. This will help soften the caulk, making it easier to remove.
8. Continue to Pry and Lift: Keep working your way around the sink, gently prying and lifting it away from the countertop. If you encounter resistance, stop and assess whether there is any remaining caulk or adhesive that needs to be cut or scraped away.
9. Lift the Sink: Once the sink is loosened from the countertop on all sides, carefully lift it out of its position. Be cautious of its weight and, if necessary, have someone assist you.
10. Clean the Countertop: After removing the sink, use a scraper or putty knife to remove any remaining silicone caulk or adhesive from the countertop. Be gentle to avoid damaging the surface.
11. Dispose of the Sink (if not reusing): If you do not plan to reuse the sink, dispose of it properly in accordance with your local regulations.
12. Clean Up: Finish by cleaning the area and wiping down the countertop to remove any debris or residue.
    

Helpful Video

With patience and the right tools, you can successfully remove a sink attached with silicone from a bathroom vanity countertop. Remember to take your time and exercise caution to avoid damaging the sink or countertop during the removal process.