There seems to be a leak somewhere under the steps or patio. Water is constantly coming through the brick/ mortar, and has apparently been doing so for some time.At first, I thought it was some kind of organic/biological growth, so I tried using a 1600psi pressure washer, but it didn't do anything. Now, I'm guessing it's some kind of calcium build-up.Should I try vinegar, CLR, something more powerful?http://bit.ly/2Ih7BZA via /r/DIY http://bit.ly/2Z9MRbj
