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babypocketsquid OP t1_j65aqgf wrote

Reply to comment by kleinisfijn in Pouring Concrete for 4 'x 6 ' Interior Front Door Entrance Area by babypocketsquid

Do we need to drill holes throughout the 4x6 area so that the concrete has something to set itself into? I'm thinking 4 holes about 2-4" inches deep to prevent movement or would the bonding primer do that?

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kleinisfijn t1_j65ccvo wrote

It certainly wouldn't hurt to drill a couple of holes and run in a couple of tapcon concrete anchors. If you leave them sticking out a bit they'll act as pieces of rebar linking everything together.

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babypocketsquid OP t1_j69q5co wrote

What about grinding down the uneven surface? Given I'm going to be filling the area roughly 1-2" deep, does it matter if the surface is relatively ground down to an even level?

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