I'm nearing the end of a year-long total shop renovation. My shop floor is concrete (I'm tucked away in the basement). I have some 2 foot square foam "shop floor" tiles (the tiles have jigsaw puzzle edges so they fit together). I think they were "on-sale" about 10 bucks for a pack of 4 at Pep-Boys - I had a weak moment and snapped up enough to do most of my shop.
Before the renovation - I found them a little problematic, as they can be tough to keep clean - even with a good shop vac the sawdust tends to stick to them. And despite them fitting together - they do tend to walk around a bit, requiring repositioning every now and then. The most damning thing is that you can't move any shop tools around on rollers without moving the foam tiles out of the way.
I really like the feel of standing on the foam (beats standing on cold hard concrete).
Concrete seems to have most of the advantages - but I worry about what my back and knees will be like in 20-30 years. So I'm asking for some "expert" advice. Should I keep the tiles or chuck-em?