P/M Concrete Floor Grinding Machines
Prep/Master® Concrete Floor Grinding Machines
This is our own line — the Prep/Master® concrete floor grinders we design and build. Low-maintenance, gear-to-gear machines with no belts or pulleys to break down, available in a range of sizes for any project. From prep to polish, there's a Prep/Master built for the job — and we back every one with in-house expertise and nationwide service. Call and talk to a real surface-prep expert, not a call center.
Why the Prep/Master?
- Gear-to-gear drive — no belts or pulleys to snap mid-job
- Cast-aluminum gearboxes — durable and built to last a lifetime
- Low maintenance — fewer wear parts, less downtime
- A size for every job — small spaces to large pours
- Prep to polish — one machine, the whole process
Built and Backed by STI
We engineer, build, and support the Prep/Master in-house — so when you buy one, you're working with the people who actually make it. Learn more about the Prep/Master.







