How can I improve the look of a stone wall which is discoloured?

  3 answers
  • Ren Shambley Ren Shambley on Jan 25, 2019

    Pressure wash. Perhaps with chemicals (do so carefully as stone cleaning chemicals are often costic and dangerious.

  • Joy30150932 Joy30150932 on Jan 25, 2019

    If it is discolored from smoke on a fireplace then you can use muriatic acid to wash the stone off. It is an acid so clothing and eye protection is required. Follow the instructions on the container. Put down a heavy cloth or tarp on the floor before starting.

  • Jeremy Hoffpauir Jeremy Hoffpauir on Jan 27, 2019

    Grind the discoloured portions or paint it.