Search Results for: surface prep

Workers pouring concrete into wooden foundation form

Bentonite Sheet Waterproofing on Foundation Walls: Detailing, Fasteners, and Failure Modes

Introduction Bentonite sheet waterproofing on foundation walls is a passive barrier that swells when wet to seal against moisture. In a DIY setup, you’re detailing joints, overlaps, and how the membrane interfaces with the wall and any backer boards or insulation. Check manufacturer guidance and local rules for surface prep, fastening methods, and acceptable materials […]

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open window above wide concrete window sill casting shadow

Waterproofing Cast Concrete Fountains and Birdbaths: Coatings vs Liners and Maintenance

Introduction Waterproofing cast concrete fountains and birdbaths means choosing a method to keep water from leaking through the concrete. You can use coatings or liners, and each has its own pros for DIY setup and long-term maintenance. Check the product instructions and local rules to confirm compatibility with your concrete, climate, and any decorative finishes.

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close up of red brick wall mortar joints

Sealing Control Joints for Radon: Where to Seal, What Lasts, and When Not To

Introduction Sealing control joints is a practical step to reduce radon entry by closing gaps in masonry where joints exist. Before you seal, clean and dry the joint, choose a sealer compatible with masonry, and follow the product’s instructions for temperature, cure time, and re-entry. If in doubt, check local rules and consult the product

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Paint roller applying black sealer on concrete surface

How to Choose a Penetrating Sealer for De-Icing Salt: Silicate vs Silane vs Fluoropolymer

Introduction A penetrating sealer for de-icing salt is a treatment that soaks into concrete to form a protective barrier against salt damage. Common options include silicate, silane, and fluoropolymer blends, each with its own pros and cons. When picking, read the product label and follow manufacturer instructions, and check local rules for your project. Silicate,

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Close up of worker smoothing fresh concrete slab with float

Basement Slab Vapor Drive in Winter: Why ‘Dry’ Floors Still Push Moisture Into Coatings

Introduction Basement slab vapor drive in winter is moisture moving through concrete from the ground, even when floors feel dry. In cold weather, capillary action and ground moisture can push water into coatings, sealing layers, and corner joints. This is a practical, hands-on issue you can see by checking for damp spots and efflorescence along

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Freshly poured wet concrete slab inside an unfinished room

Preventing Efflorescence From New Concrete: Water Sources, Curing, and Breathable Protection

Introduction Efflorescence is the white, powdery or crusty mineral deposit that appears on concrete when water moves minerals to the surface. It happens when moisture inside the slab or plaster carries soluble salts to the surface as it evaporates. Identify sources of moisture—wet curing, rain exposure, groundwater, or humid environments—and understand that surface coatings can

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Wooden formwork and rebar cages for concrete column construction

Concrete Stair Stringer Pockets: Forming and Patching Without Weak Cold Joints

Introduction Stringer pockets in concrete stairs are recessed areas that receive the stair stringers so the stairs sit solidly. This article covers how to form and patch them without creating weak cold joints. You’ll do this with basic forms, timing, and careful patching. Plan ahead, check form fit, and keep joints clean and well-tied when

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Smooth gray epoxy coated concrete garage floor with car

Epoxy Injection vs Polyurethane Injection for Cracks: Choosing Based on Movement and Moisture

Introduction Epoxy and polyurethane injections are two concrete crack repair options, chosen based on movement and moisture. Epoxy cures into a stiff bond ideal for solid, non-moving cracks, while polyurethane stays more flexible to absorb tiny shifts. Always check the product label and local rules before committing to one method. In terms of practical differences,

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gray concrete surface with visible cracks crossing joints

Routing Cracks for Sealant: Geometry Rules That Actually Improve Longevity

Introduction Routing cracks for sealant means creating clean, engineered gaps in concrete to receive sealant that can accommodate movement. This is a hands-on job where the cut shape and depth influence how well the sealant sticks and lasts. Keep the work plain and practical, focusing on a straight, uniform groove and clean edges. Understanding crack

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Concrete slab with nine drainage holes

Galvanic Anodes in Patch Repairs: When Sacrificial Protection Prevents Ring-Anode Spalls

Introduction Galvanic anodes in patch repairs are sacrificial metal pieces placed near the patch to protect embedded steel from corrosion. They work by attracting corrosion to themselves rather than the steel, helping prevent ring-anode spalls. Use this approach when you want durable repairs and want to minimize crumble around the patch. Spalling is when concrete

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