[s-cars] NAC: Garage floor

[Bluemaxww1 at aol.com]

Hi,
It all comes down to prep work just like painting a car.
 
When you place concrete, it forms a film on the top basically sealing the  
concrete.  You want to remove this.
 
The best way to make any paint stick to concrete is to create what they  call 
a profile on the surface you are applying the epoxy to. In creating a  
profile, you are roughing up the surface you are going to paint. Sanding  concrete 
won't work well and is time  comsuming.   Profiling the concrete creates small 
ridges in  the concrete, increasing the surface tension area to be coated.  
 
I would get a small chipping gun, get a small gad, that looks like a meat  
tenderizer, and run this over the whole are of the floor.  This will give  you a 
great profile for surface tension for the epoxy.
 
By the way, this is how we do the concrete floors in the power plants for  
the Power Utility I work for.  These floors get a lot more abuse than your  
garage ever would.  All comes down to prep.  I will let some else  advise you on 
the epoxy to use, because the stuff we use is over 300 dollars a  gallon.
 
As for cracks, use Concresive 1001 LPL.  This works  great on cracks.  Just 
mix up as much as you want, two parts, like in a  paper cup or a grout bag.  
Just pour or squeeze it into the  cracks.  Of course, it will fill up any void 
you have under the concrete,  so you could use quite a bit if you have a large 
void under the crack.  You  could also coat your entire floor with this stuff, 
but it would cost you your  right arm.  We sometimes use it to line clay 
pipe, if fluid seeps  through,  It seals the inside of the pipe.
 
There are also come concrete crack injection systems on the market you  could 
try.
 
Greg W.