Installed on plywood review:
I wanted a easy, light weight floor for my garage attic woodshop (scroll saw shop) that is only 6'-4' tall and I am 6'-1" tall.
It is 11'x30' with 3/4" plywood tongue and groove subfloor that had been painted with indoor latex paint and primer in one within the last 5-6 months. It wasn't a semi nor gloss, but I can't remember which I actually used, but 1 gal was used at that time( first "rule broken"). The flooring was originally only air nailed on construction, but I screwed it down 16" on center with 2" screws to remove and flex(or as much as possible). Then seams and screw holes filled with gorilla adhesive and sanded after 2 days of curing with a 120 grit finish (matched the surface texture better, but second rule broken?).
Applied one coat epoxy gray, then one coat clear top coat.
Area- 330 sq ft
Surface- semi textured "sealed" by paint and primer subfloor
Temp out side - 20 below F indoor 75*-80* epoxy temp was 63* at 75* room temp for 2 days. So I let it set for the full hour.
Base coat- 1 coat dark gray epoxy shield professional(2 one gal paint cans). Opened door and window for 5 min every 4 hours to exchange the air. 2 days cure, which smoothed out nicely, but dried more of a "dry" than I wanted possibly from air temp shock on adhesive ( 3rd rule broken). But my weather station sensor showed increase in humidity, so exchanged the air to 20-25% humidity in those 5 min. I split the 2 gal kit in half, first half doing 11x16' at first. It was not a stretch but I had just enough with a nice 3/8 nap roller.
Top coat- epoxy shield professional clear 2 days cure, with 1/4" nap roller because didn't NOT want to buy 2 clear kits.
WHY THEY USE A BAG IS FOOLISH!
OK, having to half of my area then cure and move things to finish the other half, the bag is taped back shut for a week until the other half is being finished, but seriously what are they thinking? Because of this alone, I would not recommend this clear coat, and if your base epoxy comes in bags, just use a 5 gal bucket. Secondly, I mixed aircraft adhesives almost daily for over 10 years, so with a wire stir stick on my drill, part A&B parts were measured out 5:3. Mixing half the kit for 1 minute and then let set 5 minutes. Then remixed again for 1 minute, and applied with surface and air temp 75* 30% humidity (20 below outside in winter). There was still a few spots that did not mix 2 half dollar size. So having said this, I would have no idea how one would make sure things were mixed using their stupid bag idea if a full kit was being used and dumped into a paint tray. Not helping anyone out here, we are still using a bucket Rustoleum!
The gummy spots I just put extra sand down, not a big deal, but was pretty surprised because the area where the soft spots were, are half way throughout the application area.
I had only hand spread sand in the first 4'x4' entry area by the door, not mixing it into the full batch(4th rule broken?)I then worked down the center of my floor(walk area)and the rest of the area worked itself clear with no sand after 4 more feet.
Anyways,
Like every other customers have said, HOW they give such large coverage numbers are beyond me! If doing a shop floor, I would not stretch it at all, I would assume the lower number coverage, then hope for the best hitting halfway between third numbers. But would install 2 thin coats vs 1 thicker coat.
Coverage= aim for lower sq ft coverage.
One 2 gal kit gray kit barely covered 330 sq ft of previously painted PLYWOOD SUBFLOOR flooring.
1 clear kit applied seriously barely covered 330 sq ft.
Granted I know they say only concrete, yet for my use, I wanted a better surface, more light reflecting, and light weight and also not using any of my floor to ceiling height. And having worked on epoxy shop floors, you can't really compare their durability.
The finished floor came out well. Worth the time, and I am OK if some seams or screw heads pop. It is a smooth floor now, much easier to sweep and things are easily seen if dropped( no color flakes were used). For $225 it covered 330 sq ft. and will be very durable compare to vinyls or cheap laminate these days. And not having 500-700 pounds is also a nice plus, only 30# give or take for the 2.75 gal of product.
I will not monitor for questions asked/ nor update the review, unless there are major things that happen which would only be my fault for the substrate that it was applied too and be of help for someone else wishing to apply to a small shop area with tongue and groove subfloor substrate. I don't see any reason why this would not be useful inside a cargo trailer. All the anti slip would be used for that otherwise you would be regretting it.
The lower garage area is heated to 45-50* in the winter, with the upstairs being brought up to room temperature as I work. Otherwise the upstairs will be 45-50* ,so I don't think the floor will have too much temperature shock, being the bottom of plywood being 20* cooler than the topside.