06/13/2026
Looking for some advice before this driveway gets poured.
The quote and contract both call for a 5-inch concrete slab, and we went with a reputable local company at a middle-of-the-road price. But now that the forms are set, it looks closer to 4 inches in some spots.
I brought it up, and they said the concrete will settle down into the gravel some, and that they can move some stone away from the forms where it got pushed up during compacting. But when I checked it myself with a string line and tape measure, it still has me questioning whether it’s actually going to meet the 5-inch spec.
I’m not trying to nitpick or be difficult. I just want to make sure it’s right before the concrete truck shows up, because once it’s poured, it’s a much bigger problem to fix.
For anyone who does concrete work, would you push them to adjust the forms now, or is this normal prep before a 5-inch driveway slab?