Sand is the most abundant ingredient in the mix. The powdered cement and lime are the glue that holds the sand together and ...

Cleaning brickwork ... efflorescence or accidental flecks of paint ruining brick, stone and paving slabs, Sika’s powerful acid cleaner is your secret to correcting them all.

What's more, the wall might not even stay put once ... you can also use muriatic acid or another acidic brick cleaning solution like Prosoco Sure Klean 600 — Sunshine Supply in California ...