Concrete Sealer/Epoxy

Outside no, but inside yes.

I used the rustoleum stuff from home depot. Picked up two containers and some antislip for around $100 and did my whole 2 car garage with some to spare. It's held up great over the past 2 years. All I can say is clean, clean, clean some more. When you think you have every ounce of grease, dirt, and grime gone, wash it 2 more times before you even think of spreading the epoxy.

Good luck finding something for outdoor use. Everything I've seen says indoor only.

We just finished building my wife's workshop in the back yard. I used the Behr garage floor paint and primer from Home Depot. You'll probably want to build some temporary walls around your pad while you're painting to keep all the leaves and dust off it.

1) Sweep. Get all the big crap off the floor.

2) Sweep again, this time getting as much dust off as you can.

3) Mop with muriatic acid. My son used a yard sprayer to put the acid down, my wife mopped it around, and then I tried to mop it up before it dried.

4) Mop it again with a lot of water to try and get the rest of the acid up. Since you're outside you can probably use a spray nozzle on a water hose. Plus, all the extra water will dilute the acid down to where it might not kill all your lawn.

5) Sweep up all the acid-eaten mop bits up. If you used a spray nozzle this is probably not necessary.

6) Put down a thick coat of the primer. Be sure to fill in any cracks, divits, etc.

7) Put down the paint, again filling in any cracks, divits, etc.

8) Keep your dog from walking on it until it's dry.

Most epoxies don't do well with sun exposure.  You may want to just seal it and/or just paint it.  It will look okay, and hold up okay to oil/antifreeze/brake fluid, but you'll probably need to sand it off and recoat it ever few years. 

If you DO use epoxy, you'll want to put the grit in it so you don't break a hip skiing across the floor in the fog or rain.  The grit will make it look dirty in short order being exposed to the elements, and under a crapcar. 

I'd go over to the Garage Journal Forum:

http://www.garagejournal.com/forum/inde … 64e6e67a1c

There's a section dedicated to flooring, and you'll probably find too many possibilities with just a little searching and/or asking. 

Gene Beaird,
Pearland, Texas