I am attempting to repair part of a tiled shower/bathtub wall where a section of the water-resistant greenboard has to be replaced due to water damage.
Would anyone know if I have to replace the entire wall or can I limit the size of the job by cutting out the damaged tiles-backerbard section and replacing it with a new piece of backerboard and then re-tile with new tiles?
If I can replace just the damaged section, how would I go about treating the joint connections of the new greenboard with the existing backerboard to ensure the best possible water-resitant connection before I begin the re-tile phase?
Thanks in advance for your ideas & suggestions!
No Bob Villa