Garage floor

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Fishroes

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Looking for some info or first hand experience on putting fiberous materials in concrete for garage floor. Pros and cons. So far I’ve been told it leaves a rough surface. I want to minimize cracking but not spend a fortune doing it. Concrete isn’t cheap anymore
 
Fishroes said:
Looking for some info or first hand experience on putting fiberous materials in concrete for garage floor. Pros and cons. So far I’ve been told it leaves a rough surface. I want to minimize cracking but not spend a fortune doing it. Concrete isn’t cheap anymore
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My experience with fiber reinforced concrete for a garage floor was poor. Take it for what it is. It may have been a poorly mixed batch of concrete. It may have been how fiber reinforced concrete is. The durability against any kind of impact was very poor. Pot marks very quickly all over the place. I have never experienced this in any other other garage floor I`ve had. I said I would never again for a garage floor.
 
After Mike lambert` post on his garage floor. I think that would be the way I would go next time. I would think that would work well even on a floor with some small cracks.
 
Old schooler here. The story of concrete: it won’t burn, your neighbors won’t steal it and it will crack. We were taught and I still believe there is no guaranteed way to stop concrete from cracking. That said, I believe your best chance of it not cracking is lots of steel (rebar), a full 6” slab and relief cuts in strategic places. No, it isn’t the cheap way. Most contractors poor 4” slab these days. I’ve got An 8” (60’X40”) slab with lot’s or rebar in it out in the back yard as my kids basketball court. Utah weather can fluctuate 105 degrees from summer to winter. After 14 years there isn’t a hint of a crack anywhere. This slab was set on road base and a lot of it. My garage has held up much the same way, though I do have one 4 ft. crack across a breezeway. That area had a relief cut but the crack chose it’s own path, go figure.
 
I had my floor poured to 6" and with rebar on stilts spaced every 16" O.C. My concrete guys hated me but it was worth it IMO. They came back and put in relief cuts later and then I had them filled in before the Polyurea coating was done. No cracks yet and I don`t expect I`ll see any either. ;)



 
Cracks come heaving, best way to minimize that is to have a solid base of gravel and as you`re using it for garage ild say if minimum is 12" do 18", so your doing g 50% more than minimum at the least. Then do a minimum of 6" of concrete with rebar as rasky did.

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RaskyR1 said:
I had my floor poured to 6" and with rebar on stilts spaced every 16" O.C. My concrete guys hated me but it was worth it IMO. They came back and put in relief cuts later and then I had them filled in before the Polyurea coating was done. No cracks yet and I don`t expect I`ll see any either. ;)



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Can I live in you garage please?


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I remember when my garage was being built. I had the floor made with concrete thick enough to accommodate my two post lift. I had the floor painted in black and white checkerboard pattern as a cheaper and less permanent alternative to actual tile. Still looks fantastic.
 
Rasky what size is your garage kind of lights and spacing between them
Lights are something else I haven’t decided on yet
 
Fishroes said:
I would like to make the slab 6” instead of 4 That will definitely bump the price up on a 46x28
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I get that in spades. That said, ten years from now while you’re looking at your 6” crack free floor you won’t even think about the price.
 
This probably goes without saying but assuming you’re going to use creepers or rolling stools in your garage make sure that your reliefs are cut and not troweled in. Trowel marks are bad juju with wheeled equipment.
 
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