Concrete

Concrete is where I keep my step-by-step guides for planning, pouring, and finishing concrete projects.

Topics include base prep, forms, reinforcement, thickness, mixing and placing, finishing, curing, sealing, and long-term durability. I also cover troubleshooting—what to do when concrete cracks, scales, dusts, or cures unevenly.

If you’re new to concrete, start with the planning and prep articles. They prevent most of the expensive mistakes.

Stamped concrete patio with curved edge and garden bed

How to Feather a Concrete Patch Without a Weak Edge (Undercuts and Micro-Overlays)

Introduction Feathering a concrete patch means shaping the edge with undercuts and a micro-overlay so the repair blends with the surrounding slab. It’s about creating a gradual transition, not a hard line or a loaded patch. You’ll want a clean bond, good surface prep, and a plan for the edge quality as you go. This

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Worker measuring concrete slab with tape measure

Grinding High Spots on a Concrete Slab Safely (Dust Control and Tool Choices)

Introduction Grinding high spots on a concrete slab is the process of leveling protrusions to bring the surface flat and even. High spots can come from uneven finishing, hard trowel lines, or settling, and identifying them requires a simple run-over with a straightedge or level. Work calmly, plan for dust control and choose the right

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Wooden formwork with rebar grid for concrete slab

Concrete ‘Dusting’ in Basements: Hardener Options and Prep That Actually Works

Introduction Dusting in basements is when the top layer of concrete powder flakes away, leaving a dusty, chalky surface. It’s usually caused by weak laitance, moisture, improper finishing, or wear from foot traffic. Choosing a floor hardener and a solid prep plan helps harden the surface and reduce future dust. Prep work is critical: clean

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Worker rolling white paint on concrete wall

How to Seal Hairline Cracks Before Painting a Concrete Wall (So They Don’t Print Through)

Introduction Sealing hairline cracks before painting means filling and smoothing tiny cracks in a concrete wall so the paint won’t show through. Start by cleaning the crack and removing dust, then pick a filler recommended for concrete and apply it according to its instructions. Let the filler cure as directed and lightly sand smooth if

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Four concrete test slabs with markings on surface

DIY Carbonation Test for Old Concrete: What It Means for Anchors and Repairs

Introduction A phenolphthalein carbonation test is a localized destructive or minimally destructive screening check—not an anchor test. It can show how far CO₂-driven chemical neutralization appears to have progressed from an exposed concrete surface. It cannot establish concrete strength, corrosion rate, corrosion amount, bond strength, pull-out resistance, or whether a particular anchor is safe for

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Concrete columns with exposed vertical rebar against sky

Fixing Rust ‘Telegraphing’ Through Concrete Patch Repairs (When Rebar Is Too Close)

Introduction Rust telegraphing through concrete patches happens when corroded rebar pushes outward, showing up as stains, cracks, or rough patches on the surface. This is a sign the patch is not fully sealing the reinforcing and moisture is getting to the steel. In this article we’ll explain what to look for and how to approach

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Fresh concrete pouring onto existing concrete slab

Pouring a Small Concrete Slab Over Existing Concrete: Bonding, Thickness, and Joints

Introduction Pouring a small concrete slab over existing concrete means laying a new concrete layer on top of an existing slab. Before you start, clean and roughen the surface so the new mix can grip. Check the old slab for cracks and moisture and fix obvious issues before pouring. Think about how thick you pour

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