Lift support and RaceDeck concrete prep question

[Poolshark314]

We are about a month out from getting concrete poured. Getting a 4" slab poured and will plan on getting a 4-post lift. I like the idea of the casters to move the lift from one bay to the other if I am working on a different car, so I don't plan on mounting it to the floor. Is there any reason to think I should go to a 6" slab instead?

I have also ordered a bunch of RaceDeck to go down. I know standard builds wait for concrete to set at least 2 weeks before adding substantial weight for the concrete to dry and strengthen up. Should I wait longer before applying the RaceDeck so it doesn't trap the moisture into the concrete? Maybe this is a question for @RaceDeck1? There will be a vapor barrier under the slab. Thanks in advance!

 

[Yankeefarmer]

Probably not 6”, but you should check what the manufacturer of the lift recommends for concrete thickness. I think I used the recommendations from BendPak‘s website, and then purchased an Advantage lift. I just checked both BendPak and Advantages’s website and both seem to be recommending 4” for a 4 post, so you should be good.

 

[zc15]

Make sure to check the psi of your pour against manufacturer specs too

 

[Poolshark314]

Any suggestions on curing time for the concrete before putting the RaceDeck down?