Rent a rotary floor machine.
Keep it wet at all times during removal, to prevent dangerous dust. Alternatively, scrape it up using a putty knife.
Wear old clothing, and throw it away at the end of the project. Damage will easily occur if the construction adhesive is on mortar.
Things You'll Need Hot water. Wet the floor optional. You mostly want everything to be as flat as possible. Clean the floor with an industrial cleaner or soapy water. This will only work on some types of mastic, usually in recent homes. There is no fast way to remove mastic, but elbow grease or chemical removers will do the job.
The information below will go over how to effectively remove construction adhesive from brick. Use a rag to remove any remaining residue. If petroleum jelly does not appear to be working then try using heat. This will cut off the circuit rapidly if water causes an electrical short.
Old, black mastic can contain asbestos, which causes illness or death when inhaled. Will the floor machine method work on plywood or will it just tear up the plywood? Home About asbestos. Article Summary X If you want to remove mastic, wet it with a mixture of hot water and vinegar before leaving it to soften for 20-60 minutes.
Old, black mastic may contain asbestos. For large areas, rent a wet vacuum instead.
Apply another thin layer of remover to remove the remaining residue. Agitate the area with a mop or bristled broom.
Use a normal hair dryer on its highest setting and place it close to the adhesive. This is a round base that attaches to your floor machine. Removing construction adhesive can be tricky because the wrong method could damage the brick.
Let dry completely before laying down new material. If it's soft, scrape it off with a wide putty knife. Use as much ventilation as possible. You can instead use a floor machine equipped with a 3M black scrubbing pad, with a speed no higher than 175 rpm.