Can I poor self leveling concrete on uncure concrete?

Submitted by nodiaque t3_znksre in DIY

Hello everyone,

I'm currently renovating my basement and my plumber is currently finishing the underground work for my new bathroom. He is pooring quickrete concrete mix to close the slab he open.

Now, my goal is to install dricore on top of the floor and for that, I need a leveled floor. I'm using slef leveling concrete to level the basement. Before pooring the self leveling, I'm using a primer on the concrete to help it bond. This work great where its the old slab.

My question is must I wait for the fresh concrete to cure (seems to be 5 days if I read properly) before I can poor the self leveling on it?

If I can poor it before it cure, do I need the primer on it since its not cured?

Thank you!

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ksandbergfl t1_j0hii7x wrote

In the basement? If there’s a risk of flooding or burst water pipes, you won’t want a perfectly level floor, you’ll want a slight slope down towards the drain

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nodiaque OP t1_j0hn9xz wrote

I do keep a slight slope, I just need it more leveled cause right now, it's very uneven. I already did 1/3 of the surface I need, I was waiting for the new plumbing to be done which is in the middle to do the rest. So now I'm wondering how much time I must wait with the new concrete and how to prep it if needed.

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danauns t1_j0hmdr6 wrote

Dricore is very forgiving, and you can get shim kits for that system too. How bad is the concrete floor? Do you really need to pour leveling concrete for what is likely a small room? I'd rather shim where needed than pour based on my experience with both of these products.

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nodiaque OP t1_j0hn3fm wrote

It's about 600 square feet. The level is very bad. Where the new concrete is its little, but overall it's half of my basement (I already did 1/3 of that place though). It used to have a 2.5inch slope in that room alone because of the drain.

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Material_Swimmer2584 t1_j0hw5l9 wrote

Sounds like a dry mud job if it’s 2.5 inches

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nodiaque OP t1_j0i0lfy wrote

The very low part was already taken care off. Now it's leveling the 30 feets of slab. Very old house, moved a lot, lots of low and high spot and I wish people would simply answer the dam question instead of trying to convince to do something else. While I appreciate inputs and suggestion, at least cover the main topic.

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ItsGermany t1_j0icu78 wrote

Sorry you are not getting the answer you exactly need. So, not to be another problem answer, but wait. The concrete freshly poured will be going through an exothermic reaction and giving off moisture. So wait the 5 days, it is not the end of the world, but waiting is worth it, in almost all cases. Rushing makings a crappy job that needs to be done twice.

I will not comment on how you are doing it, but there were plenty of engineers and chemists (and maybe even risk analysts) that put their thoughts into "5 days" rule. So just follow it and do the rest as best you can and hope for the best on your long term outcome.

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nodiaque OP t1_j0iid6m wrote

Ah thank you. Just too bad because I got 5 days off and was wishing to continue the basement and this make a very big hold, but better do it right.

Thanks

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FigureResponsible179 t1_j0ig0zx wrote

Let it cure. Paint it with the prep liquid from the same manufacturer let it dry and the pour the self leveling cement

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nodiaque OP t1_j0iia22 wrote

Ok, so cure time is 5 days if I understand properly

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