JBurd
New member
We came in after a crew soda blasted a residential driveway to strip paint. Their project was off and on over a few weeks due to weather but then we went right in there and soft-washed the house down. We downstreamed a pretty sudsy mix of PM for Bleach to neutralize the soda, then did a very thorough low pressure rinse (about 10 times as much rinsing as with a normal house wash). The rinsing was done at about 300 psi with fan tips. It looked great wet but after it dried the stone was still showing an efflorescence like white haze. A second rinse didn't charge the results much. Any ideas on what is happening and what can be done about it?