Substrate Technology
CONSTRUCTION EQUIPMENT & SUPPLIES
1384 Bungalow Rd.
Morris, Illinois, U.S.A.
Prep/Master grinding machines work hard on the job to save you time and labor
Cuts through epoxies, thin set, and coatings like a breeze
STI is dedicated to personalized, informative education around the world
Polish basements, garages, and tight residential areas with ease
Quickly prep smaller jobs with the S210E 8-inch shot blaster
Offering a full range of shot blasting equipment from IMPACTS Americas
Airtec’s 8-inch scarifier makes surface prep quick and easy
Grind down your toughest surfaces with Airtec’s 13-inch profiler
Bring amazing shine to concrete floors using STI Diamond Systems
Our Products & Services
From surface preparation to polishing — for concrete, terrazzo, and stone surfaces
Diamond Systems
Use the STI diamond tools and systems to get the best results with your prep-to-polish projects.
Grinding Machines
STI is the famous manufacturer of the Prep/Master grinding machine
Shot Blasters
We offer the best shot blasters in the world – the IMPACTS Streamer line of blasters
Dust Collectors
Our powerful and reliable dust collectors keep job sites cleaner and healthier for everyone
Scarifiers & Profilers
Remove tough coatings and adhesives by scarifying your surfaces quickly and easily
Service & Support
STI is known for its excellent customer service and support — you will always get a real person to talk to!
STI offers real-world solutions and high quality floor prep-to-polish equipment and accessories.
Words from Our Clients
The main reason I use the Prep/Master for my flooring prep work is due to its incredible durability and low level of maintenance. It is by far the best piece of equipment for the removal of high build coatings and membrane systems.
Steven S. Williams, Field Support Manager
What we were pleased to find is that the diamonds worked exactly as advertised. We did not have issues with scratch marks between steps – productivity and diamond life were spot on. I will use the system again because of its predictable results and fast turnaround time.
Darcy Manchak
Concrete Resources, Inc. , Canada
I am writing to compliment your professional support and the great results of STI tools used to complete our project of prestige — The National Art Gallery Singapore (NAG). We have accomplished our mission for this project and got more projects from the same consultants thereafter.
JJ Tan
Asia Mortar Pte., Ltd , Singapore
I’ve been in the epoxy flooring business for 3 years and have spent a fortune on grinding machines and tooling. NOTHING I have used works as well as the Prep/Master system. My employees couldn’t get rid of their smiles with our new machine. Life just got a lot easier!
Jonathan Walker
Garage Kings , Florida
“We use our Prep/Master grinders almost daily under very harsh conditions for concrete prep work. We find they are built like tanks, and require very little maintenance, and run better than any other machine we have used.”
Daniel Blum, President
Armorpoxy, Inc. & Prep-Crete Services, LLC , New Jersey
I am amazed! I have done 3,000m2 (30,000SF) and the TPS #1 and TPS #2 still have life left! I will never use any other diamond for terrazzo ever again.
Silas Katonyera
Smart Floors Africa , Uganda
The customers who see my floor say they have never seen polished concrete look so good without a guard on top of it. Because of the EGT System, I now need to redo my other polished areas because they do not have even half the shine!
Gus Valdez, Owner of
Concrete & Terrazzo Equipment , Chicago, IL
Guaranteed Results
Our Partners
Our Benefactors
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