After some advice. I have a concrete pool which has a moss rock edge and waterfall.
I need to do some repairs as the waterfall leaks where tree roots have penetrated and cracked the mortar.
So, I am wanting to know what mortar mix would be the best for the repair.
I have read something that is M4 classification would be best. Do I use lime or a plasticisier and acrylic modifier?
And what type of sand would be best? I have read that brickies sand reacts with salt and chlorine?
I am located in Perth.
Thanks in advance.