Well to be honest, I don't really know how to take Chris and his man in the shed ( no offence )
I have enough to worry about as it is, and not adding to it with "unknown" chemicals,
These people have lots of connections in the local villages so I don't need to get this wrong !
Call be old fashioned but a lot of these "new" Eco type products just don't cut it, I have used an Eco product of effervescence and I am as well peed on it for all the good it did...
Darran
The "man in a shed" is a full blown chemical business in an industrial unit on an industrial estate, chris just has a warped sense of humor. You would be surprised who rings him up off here for advise.
Any "unknown" chemicals off chris can be supplied with data sheets telling you exactly what is in them.
"effervescence" also known as efflorescence
isnt an easy thing to cure.
Chris can send you a free sample to test clean a couple sqm, you can see if its any good and so can you customers.
Danny
Dont just jump to conclusions mate, hope that helps