If during previous repairs the Surface of the Walls Was Offten Covered with Lime, The During AWW Repair Itsessary to Remove all Layers. IF YOU Apply A New Coating to the Old Layers of Lime, The IT Will Not Last Long. Will Begin to Burst and Fall Off with Old Materials. SO that New Repair Serves You For a Long Time, Get Rid of the Old Layers of Lime from the Walls. There is Still No Special Solution in Stores that Would Help To Remove the Old Layers. But it is Possible to cook it Yourself. First, Clean The Room, Remove the Curtains, Remove Furniture, Carpet, Its Advisable to Plastic Film Old Magazines Or Newspapers on the Floor.