You will need
  • - flat spatula
  • - metal brush
  • - a foam roller or a spray bottle with water
  • - rags
  • - bowl of hot water to relieve particularly difficult lime.
In order to remove the old mortar from the wall or ceiling, you need to prepare yourself and prepare the necessary tools. Initially you need to protect yourself. To do this, find safety glasses, hat or scarf, dust mask and rubber gloves.
Protect all objects in the room, covering them with plastic wrap, otherwise, in addition to the removal of lime will also clean chandeliers, cabinets, floors.
The work of removing the old lime is very dusty, so take all the appliances in another room, clear shower curtain with window, glass seal or Newspapers or film.
Don't forget about ventilation, ensuring fresh air in the repaired room.
Take a roller, lightly moisten the foam with water and gently apply the water on the lime wall. Let the water soak in and dry. Repeat wetting. Difficult places, wet with the spray. Do not allow waterlogged and dripping water on the floor – it will only add to the problems with cleaning. Lime will start to lag.
Take the spatula and, holding it at an acute angle to the wall, begin to peel away the lime. Don't forget about the corners, the joints of plates and other difficult places. Clean off the core layer of lime, clean the residues. To do this, use a wire brush (or grinder with a special attachment).
Use wetting with hot water with subsequent drying, if the lime is not removed. The remains of lime wipe the surface with a damp cloth, allow to dry, damage plaster, and then apply primer and allow to dry.