Hello everyone,
I have a concern with my newly poured concrete slab. I have asked 20 different individuals and I have received 20 different answers, regarding the proper time to seal, paint or both a newly poured slab. This past Monday, 28 Oct, I had a 20'x30' slab poured, 12" footers all around and 4" slab. I put down the plastic moisture barrier, prior to pouring and now I want to seal and paint. I have been told that I should wait at lesat 72hrs before sealing and then 24-48hrs after that to paint. I have also been told that I should wait 30, 60 and 90 days before doing anything to it. Can anyone tell me if there are any truth to any of these theories? Also, any advise, suggestions, and recommendations will be greatly appreciated. I am basically looking to seal and paint this slab as soon as possible, so I can start putting the framing up. I don't want to deal with any paint after construction has started. Thanks.

JD

 

What type of sealer do you intend to use? Normally you don't use a sealer if you are going to prime and paint. What type of paint do you intend to use? what kind of traffic will the floor see? Paint doesn't react well to green concrete. I've always waited a minimum of 30 days before applying any paint.

 

Concrete floor epoxy paint surface prep

 

From doing some more research, I was able to find "Quickrete, Cure & Seal". I thought this migh be the option at first, since it will seal green concrete. However, after reading Marksr, I don't know if this will work. I want to ultimately paint the floor with some type of durable paint.

"What type of traffic will it see"? This is only a work shop and will see normal foot traffic, not vehicle traffic, except for maybe the occassional oil change from the tractor or truck.
I just don't want to have stained floors from grease and other products that may fall onto the floor.
"What type of paint/sealer do I plan to use"? Not sure, that is kind of why I am on here to get some suggestions as to what would be the most beneficial and cost effective.

I can't wait 30 days, as I am about to start the framing. I wanted to get the floor prepped and completed, prior to any framing. Maybe just a sealer will work. Thoughts?

One final thought, I found a thread on here that talked about using Thoroseal on green concrete. Could this be an option and skip the whole paint process, since this stuff supposedly dries white? Thoughts?

JD

 

The cure and seal type sealers somewhat seal the concrete from stains but they also prevent any paint type coating from bonding as well as they should. I'd either use the cure and seal and forget out any type of paint coating or leave the concrete alone and apply a floor coating after the construction is about complete.