I have a client who installed 20 000sqft of sand blasted granite in his lobby.

 

It has been sealed with a silicone impregnator.

 

It has held up beautifully for the last year

 

 

The cleaning company came in and started to clean it using a black pad to remove marks that were left behind from the winter carpets

 

What has happened is that the black pad as acted as an abrasive and sort of polished the fresh , bright  sand blasted finish, leaving what looks like a darker spot

 

 

Personally I think that trying to keep it looking so light will be an impossible task unless I find a way to mimic the sand blasted technique indoors.

 

I will accept any advice, as I am going for tests in tomorrow

 

I have acids

Degreasers

White pads

Blue pads

One of those rotating washer blasters

 

 

What do you guys think?

 

Antonio

The guy who looks for headaches and impossibilities!