We have a crack on the outside of are house in the pebble dash. I bought the house off my mum for cash so never got a surveyor but she bought the house 20 yrs ago and the crack was there and she had it filled in but it came back. I dont know how good of a job they filed it in as I was only a kid. Now I want to get this crack sorted out. What route do I need to go down, is it just a cash of filling or do I need to do anything for subsidence issues ?