Clean It Up

UK General Cleaning Forum => General Cleaning Forum => Topic started by: vision tech on May 02, 2008, 09:26:40 pm

Title: white stain on bricks
Post by: vision tech on May 02, 2008, 09:26:40 pm

I done a job on wednesday which was 3 story block of flats,gutters where blocked and muck was running down the wall for over a year, i cleared the gutter and then powerwashed the brickwork,when the wall dried in the bricks where white stained,i scrubed it with TFR then washed down again,same result,any ideas?

Title: Re: white stain on bricks
Post by: Andy Foster on May 02, 2008, 11:15:01 pm

brick acid

 ;D

Title: Re: white stain on bricks
Post by: John Kelly on May 03, 2008, 11:06:09 am

It is likely the brick were already suffering from Efflorescence, this is salts coming to the surface due to moisture. This was probably masked by the dirt and moss until you pressure washed it off. It is likely the brickwork is saturated its full depth due to long term problems with the down pipe. I'm afraid until all the moisture has evaporated from the bricks, and depositing salts as it evaporates, it would be pointless even trying to remove it. Just explain this to the customer.