Introduction Galvanized rebar is steel reinforcing bar coated with zinc to resist rust. In DIY projects, that coating matters for longevity in moist concrete, but you still need to follow local rules and manufacturer guidance. When you’re tying it into repair work, consider how the galvanized surface will interact with repair mortars and what to […]

Introduction Epoxy-coated rebar is steel reinforcing bar coated with epoxy to resist moisture and corrosion. It’s used in concrete projects where moisture or soil contact is expected. Think of it as a protective shell for rebar in harsher environments. Transport and handling can be different from galvanized bars, so plan how you load, carry, and

Introduction A rebar lap splice is the overlapping of two reinforcing bars to transfer load from one bar to the next. In footings, this overlap helps continue the reinforcement where bars end. Check local rules and manufacturer guidance for any required overlap length or placement specifics. Make sure you place bars with proper alignment and

Introduction Hairy fibers at the surface happen when fibers protrude from the concrete finish. This surface issue is usually caused by how the mix is placed and how fibers are distributed during finishing. Work with the goal of keeping fibers below the surface as you strike off and trowel. Synthetic fibers can help with crack

Introduction Microfibers are ultra-fine fibers added to concrete to improve toughness and crack control. Macro fibers are coarser, longer fibers that help bridge larger cracks and add toughness. For DIY projects, the choice depends on the expected loads and how much cracking you want to limit. In practice, microfibers are mixed at small doses to

Introduction Rebar chairs are simple supports that hold the steel rebar off the ground so it stays centered in the slab. They keep the bars at the right height and prevent sagging or contact with the form. On a DIY slab, you install them along a grid to hold the rebars steady during pour. Punching

Introduction Re-entrant corner cracks are cracks that form at inner corners where two walls meet and curve back toward the interior. They happen where stresses concentrate as the concrete shrinks, settles, or is loaded in ways that push against those sharp inside corners. You’ll see them as narrow lines or wider gaps that seem to

Introduction An isolation joint is a gap that lets the concrete slab move independently from walls and columns to prevent cracking. In this article we cover where to put them around walls and columns in a DIY-friendly way, not a textbook. Check local rules and manufacturer instructions for placement guidance. Geotechnical soil conditions and reports

Introduction Feather-edge overlay failures happen when the thin edge of a concrete overlay chips or breaks under use. This usually shows up where the overlay tapers to a fine edge and carries a lot of traffic or weight. In plain terms, the edge bore the brunt and started to crumble instead of staying solid. Signs

Introduction Ferrocement is a thin, reinforced cement mortar system that uses mesh and a cementitious mix to build lightweight, curved shells like planters. It relies on multiple coats and a strong mesh lattice to hold shape and resist cracking. It’s a hands-on technique that you can adapt for small DIY projects, with attention to formwork