That looks like glue mastic, right?
It's all the stuff that Nate said. The floor is epoxy coated.
Thanks,
@Nate The Great. I'll investigate the boat decking.
do you have room to keep pallets that can be laid out after cleaning for drying?
Good Idea but space is limited.
Other shops use a lot more water by flowing water under the rug while cleaning to keep the debris flowing. I need to be more conservative with water usage because of the drought.
I guess periodic clean-up is just another form of maintenance. I feel the tiles provide a space for debris to fall and be separated from the rugs, which means cleaner rugs. Roll up tiles would be easier.