It's called a vacuum and sand blaster in one unit need a gas home depot air compressor 2 tanks. Blast away grout clean and slate very good we use glass beads harbor freight. 
Hector Castillo 

Sent from my Verizon Wireless 4G LTE smartphone

-------- Original message --------
From: Baird Standish <>
Date: 12/13/2015 3:26 PM (GMT-08:00)
Subject: Re: Marble shower floor


From the desk of
Baird Standish
Managing Partner
Facility Specialists, LLC
15 West Highland Ave. Suite E
Philadelphia, PA 19118
Phone: 215-732-7505
Fax: 215-546-9160

On Dec 13, 2015, at 1:15 PM, hector castillo <> wrote: