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Pouring new concrete over existing

3565 Views 4 Replies 4 Participants Last post by  indel
I would like to enclose my carport, there is existing concrete which is about 50 yrs old and has a few cracks. I would like to raise it up 3 inches to meet with the house foundation. Will it be okay to pour over the old? Also I have 3 6X6 support posts that are anchored to the concrete, will I be able to pour around these and make them permanent in the foundation?
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concrete over concrete

As it happens, I intend to do the same. Over a 4 inch slab, I will set a metal mesh and poor concrete to make a supplemental 4 inch. I have googled this subject and the answers are, mostly, afirmative. The treatement of the existing slab will solve the problem at the interface. Talk to an experienced contractor.
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