Here are pictures of my first 'home gym flooring' in my garage. Got the big anti-fatigue mats from Sam's and put some linoleum over them so I could move and slide as I needed. I added some foam mats to run on and do floor work to save my knees. This system was really cheap...but really looked messy.
I moved my workout space inside and decided to lay a nice wall-to-wall rubber tile flooring system. We cleared part of a spare bedroom and installed 12 feet by 7 feet of Tatami rubber floor tiles. And I love them.
The tiles are 2 feet by 2 feet and are about 3/4-7/8 inch thick. They are perfect shock absorbers for knees, ankles and feet. I wear my work out shoes and have no pain at all when I'm done. I can jump and bounce with ease.
Installation required a box cutter with 3-4 blades, a Framing Square as my straight edge & measuring tool, a pencil, and some patience. I installed mine directly on the foundation concrete without any adhesive.
I am pressing fairly hard to show they do NOT ever let me hit the floor. They are well made with the perfect balance of bounce and support for my feet and knees.
Also notice each tile comes in two complementary colors so you can flip them over like I did and create the custom look you want.
I was a bit concerned with the interlocking tongue and groove system. Yes, they are tight so I can slide right over them. Every once in a while an edge will stick up a touch...so I'll reach down, gently press it back even with the neighboring tile. Done!
I like the gentle ridges in the tiles. Perfect to slide, but the they also give me traction. When doing floor work, your shoes and hands will stay in place. I have found moist (sweaty) hands tend to stick better.
Honestly, I still use those old small rubber mats on top of the home gym flooring tiles when I need to kneel for an extended period. I guess that just comes with age!
I hope it's not concrete!
Paul Ingraham wrote a great reference article (Is Running on Pavement Risky?) that talks about different running surfaces. The evidence of your risk may surprise you (in a good way.) Yet in the end, he recommends a softer surface. Read his excellent article before you start an movement based exercise program, and talk with your physician about injury risk.
I think my knees, ankles and feet have thanked me many times for my Tatami home gym flooring tiles!