Old thread but seeing as it is now getting some action:
Costco Epoxy kit, the one you order on line, used two kits in 672 square foot of new concrete.
Had installation problems, due to being forced into a rush application, way too hot a morning, and equipment failure. Spike shoe failure, flake dispenser broke.
Installation was 18 months ago.
Usage includes;
Two portable lifts being assembled and moved around the shop.
Several transmission replacements.
Extensive body work.
All car/truck fluids spilled/dripped on floor many times. That's brake fluid, carb cleaner, brake cleaner, transmission fluid, gasoline, solvents, oil, etc. etc. etc.
Floor jack moved many times, especially during body work.
Jack stands.
MANY dropped tools and dropped car parts.
Heavy items dragged.
Many heavily loaded tool boxes rolled around.
Vehicles as heavy as F350 V10 Dually worked on.
Daily parking for one to two vehicles, including my F150.
Lots of toolboxes laid on side during restoration work (things like full size Matco double boxes, Hammerhead boxes, etc.)
Results;
roughly dozen broken places, where the epoxy has cracked and come up, one bigger than a half dollar, the others smaller than a dime. All from impacts.
Assorted scratches in top layer.
A few very weird stains that seem to have bonded with the epoxy. This was caused by transmission fluid, which only stained certain areas. Other nearby areas with much more fluid did not stain.
Overall impressions after 18 months of being careful, but not letting the floor rule my usage of the shop:
I like it.
It cleans much better than plain concrete. Stays way cleaner.
Looks good to the casual eye. Never had anyone notice the damaged places since the shop started getting usage. I have pointed out the problems to visitors, who still say the shop floor looks great.
Would I do it again?
I might think about the paint on surfaces, the 'treatments' that leave the concrete looking the same but seal it, but that is because of cost.
If cost were not a factor (my epoxy job cost very close to a buck a square foot) I would use epoxy again.
I would not leave the concrete untreated.
The cleanliness is so much better that I am spoiled and don't want to work in untreated shops/garages.
I also work on the floor a lot more than other people, as I walk with a cane, or two... So sitting or laying on the floor is an everyday occurrence and the cleaner surface is very appreciated.
