wall pointing

Hello, I'm a complete novice about this but I'd like to do some bits of repointing on the wall of my terrace. I can remember (many years ago) a builder mixed sand, cement & lime for pointing another wall but I can't emember the ratio or how to mix it. I also have no idea what type of sand (I...

Three years ago I did some pointing to a north facing above a conservatory. I recently had to get back up there to sort out a leak and then noticed that the pointing had failed. A thin layer had been pushed out at the front and then behind that it felt moist and quite soft. Ironically that’s why...