Applying control-joint filler demands balancing hardness to transfer loads, flexibility to move with the slabs and application timing to minimize tearing. A control joint (or contraction joint) is ...

DEAR TIM: My concrete driveway has eight large slabs. The driveway slopes down from my garage to the street. The straight-line gaps between the slabs has enlarged, and some cracks are as wide as 2 ...

DEAR TIM: I spent some time at your AsktheBuilder.com website but couldn’t locate the exact video that answers my question. There’s a wide ugly gap between my concrete outdoor patio slab and the slab ...

10 Best Concrete Crack Fillers 2025 - Fast Drying, Epoxy, WaterProof, Large & Small Cracks Links to the best Concrete Crack Fillers are listed down below: 10.

Uncompacted fill under a concrete slab — be it for an entire home, an exterior patio, a front porch or a driveway — is a recipe for disaster. Concrete is an amazing material, but it has an Achilles ...

Q. There’s a wide ugly gap between my concrete outdoor patio slab and the slab my house is built on. I’m trying to determine whether to caulk the crack or fill it with some cement-based patching ...