Since the removal of asbestos-containing materials and lead-based paint is dangerous and even illegal in some areas, if you're planning on removing a popcorn ceiling you should have your ceiling tested for asbestos and lead-based paint. To do this, call companies that specialize in asbestos and lead-based paint removal. The company will require a sample for lab testing. To obtain the sample, saturate a small portion of the ceiling with water and then scrape off some popcorn. Collect this sample in a small container or plastic bag and take it to an asbestos and/or lead-based paint testing company.
If your ceiling does indeed contain asbestos or lead-based paint, you should consider calling in a professional to remove the popcorn ceiling. Professionals with experience in removing asbestos and lead-based paint are familiar with safe removal and disposal techniques. In addition, if you attempt to remove asbestos-containing material and/or lead-based paint and do not have any experience in doing so, you may risk legal repercussions. If you have questions regarding your local ordinances regarding the handling of asbestos and lead-based paint, you should call your local courthouse.
Before attempting to remove a popcorn ceiling, you should purchase and use the proper equipment, which includes a respirator, goggles, gloves, long sleeves and long pants. Even if a popcorn ceiling doesn't contain asbestos or lead-based paint, the job is a messy one that produces a lot of dust and debris. In addition, barriers should be placed in the room with the popcorn ceiling to contain the mess. Place plastic tarps on the floors and hang plastic from the ceilings to create makeshift “walls.”
The popcorn ceiling should be thoroughly saturated before you begin scraping off the popcorn texture. A mixture of detergent and warm water can be used for this purpose at a ratio of 1 cup of dish detergent to 5 gallons of water. After the ceiling is sprayed, the detergent solution should be left for 20 minutes or more to penetrate the ceiling texture. Turn off the electricity in the room in which the popcorn ceiling is being removed.
Scrape off the popcorn texture using a large putty knife. Any time the ceiling starts to dry out, the ceiling should be sprayed again with the detergent solution. Pay attention to where the debris is falling, and use more plastic tarps if necessary.