That looks like efflorescence from here,....if it is,.don't make any promises on that efflorescence until you do a test spot. And then you need to explain to the customer what efflorescence is.
*The rest looks fairly easy.
Jeff
AJ said
May 17, 2016
What is best way to clean it? I read water and a stiff brush is all I need. Doesn't seem likely.
BlueRidge said
May 17, 2016
Jeff Wible wrote:
That looks like efflorescence from here,....if it is,.don't make any promises on that efflorescence until you do a test spot. And then you need to explain to the customer what efflorescence is.
*The rest looks fairly easy.
Jeff
What Jeff said. Efflorescence is a bear! Then there is calcite which takes two different chemicals and still might not come off.
While in Myrtle Beach last year I sat in on the class by Arron Richie, http://www.benchmarkpressurewashing.com/ for brick cleaning. He said he has no problem hitting brick with straight SH if that is what it takes. It beats getting the PW going and possibly doing damage with older brick and mortar. I attack these with roof mix then bump it as needed. A strong garden hose rinse or a 30 or 40 tip in the gun will usually do a nice job. It doesn't look like you have anything to worry about other than weeds!
AJ said
May 17, 2016
Thanks Brett. I like that plan!!
SprayWash said
May 19, 2016
Jeff Wible wrote:
That looks like efflorescence from here,....if it is,.don't make any promises on that efflorescence until you do a test spot. And then you need to explain to the customer what efflorescence is.
*The rest looks fairly easy.
Jeff
What Jeff said!!!!!!
And What Brett said!
-- Edited by SprayWash on Thursday 19th of May 2016 08:05:27 AM
Chris Mozick said
May 20, 2016
F9 makes an efflorescence Reamover I've used it and works great
Asked to quote this building. it looks like algae on most of it but that one side has the white and that looks like salt or limestone
Any suggestions
*The rest looks fairly easy.
Jeff
What Jeff said. Efflorescence is a bear! Then there is calcite which takes two different chemicals and still might not come off.
While in Myrtle Beach last year I sat in on the class by Arron Richie, http://www.benchmarkpressurewashing.com/ for brick cleaning. He said he has no problem hitting brick with straight SH if that is what it takes. It beats getting the PW going and possibly doing damage with older brick and mortar. I attack these with roof mix then bump it as needed. A strong garden hose rinse or a 30 or 40 tip in the gun will usually do a nice job. It doesn't look like you have anything to worry about other than weeds!
What Jeff said!!!!!!
And What Brett said!
-- Edited by SprayWash on Thursday 19th of May 2016 08:05:27 AM