Thick, cheap shirts don't get worn.

The weight of their equipment is the main reason. 3mm thickness(4 would be better if affordable), a minimum of a 20 mil wearlayer and ESPECIALLY a scratch resistant FINISH like Aluminum Oxide or Ceramic Bead.

Thanks for all the info guys..Darrie...it sounds like we have the same books...I have read " The Art Of War"...will try " Thick Face/ Black Heart..and per two votes I will get " The Millionaire Real Estate Investor "

You want no less than 5mm in thickness.

We had supplied thick plastic sheeting etc etc but it happens & they paid for the replacement.

If it's not too thick you can cut most of it out with a drywall knife.

Put down medium density fiberboard, the only thing is, it will raise the floor another 1/4" or 1/2" depending on the thickness you get.https://www.homedepot.com/p/Medium-Density-Fiberbo...

If you do shelves above toilet, make them thick chunky and rustic looking.

Fashionable is gray or dark thick(25mm, 15 mm) with good backings. 

The day a bag of powdered tile mud split open in my trunk was a day that truly sucked and put me on the path to truck ownership.If you're not quite ready for a truck's gas sucking issues, try a foldable trailer like this:Foldable TrailerTakes up very minimal space in your garage and when unfolded and a sturdy piece of thick plywood as the base, works really well for hauling around stuff.