Not sure if this is the right forum for this, but couldn't find one more appropriate?
We have a retaining wall around our pool that has a ton of cracked mortar joints. I know nothing about masonry repair so I don't know if its even worth fixing, but it seems like it will keep getting worse and eventually fall apart. So, first question is should I fix it? Second, if I do it myself can I just cut out the cracked mortar with a grinder and diamond blade, then put new grout/mortar in its place? If so, how deep do I need to cut out?
Thanks for any help!