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.

Concrete stairs next to a red brick wall

Integral Waterproofing Admixtures: What They Can Do—and What They Can’t

Introduction Integral waterproofing admixtures are additives mixed into concrete to reduce water penetration from within. They work during curing and can be easier to install than external membranes, but their effectiveness depends on mix, quality, and application conditions. For DIY projects, expect they won’t fix existing cracks or damage and you still need proper concrete […]

Integral Waterproofing Admixtures: What They Can Do—and What They Can’t Read More »

Unfinished concrete building structure with window openings

Papercrete (Cardboard Concrete): Common Problems, Simple Tests, and Fixes That Last

Introduction Papercrete is a composite made from shredded paper or cardboard mixed with a cementitious binder to form a lightweight, workable material. It relies on the paper fibers to add bulk and some insulation, while the binder provides strength. It’s a hands-on option that varies with the exact mix, moisture, and curing conditions, so results

Papercrete (Cardboard Concrete): Common Problems, Simple Tests, and Fixes That Last Read More »

Concrete wall with peeling and damaged white paint surface

Crystalline Waterproofing for Concrete: How It Works and Where It Fails

Introduction Crystalline waterproofing is a treatment that makes concrete itself less permeable by filling its pores with crystalline compounds. It is typically applied or incorporated during construction, so the concrete blocks water intrusion rather than just coating it. This approach aims to create internal barriers that work as the concrete hydrates and cures. The mechanism

Crystalline Waterproofing for Concrete: How It Works and Where It Fails Read More »

paint roller and brush in bucket of gray coating

Negative-Side Basement Waterproofing: Coatings That Actually Hold (and Why Others Don’t)

Introduction Negative-side basement waterproofing coatings are interior wall treatments applied to the inside surface to block water from seeping in. These coatings work by forming a barrier on the wall that resists moisture that pushes inward. Choose coatings that are rated for interior use and compatible with the wall material, and always follow product labels

Negative-Side Basement Waterproofing: Coatings That Actually Hold (and Why Others Don’t) Read More »

Empty room under construction with ladder and drywall panels

Hydrophilic Waterstops: Installation Tips to Avoid Blowouts and Leaks

Introduction Hydrophilic waterstops are sealant barriers that swell when wet to block leaks in concrete joints. This article covers practical installation tips you can apply on a DIY job site. Check product labels and manufacturer instructions for exact use, prep, and curing details. There are different forms and installation approaches, so review the type you

Hydrophilic Waterstops: Installation Tips to Avoid Blowouts and Leaks Read More »

Construction worker placing foam concrete blocks on wall

Bentonite Waterstops: Controlling Swell, Preventing Gaps, and Common Mistakes

Introduction Bentonite waterstops are flexible liners embedded in concrete joints that swell when they get wet to seal the gap. They help control swelling and reduce leaks in walls, foundations, and slabs. Used in place of rigid seals, they require proper placement and overlap for a good seal. Installing bentonite waterstops involves placing the strip

Bentonite Waterstops: Controlling Swell, Preventing Gaps, and Common Mistakes Read More »

Concrete being poured into wooden formwork outdoors

Form Release Agent: How to Apply It Without Staining or Soft Spots

Introduction A form release agent is a coating applied to formwork to prevent concrete from sticking and to reduce staining. Options include water-based and solvent-based types, and the choice depends on the project, curing conditions, and safety considerations. Always read the product label and manufacturer guidance to choose the right option for your job. Apply

Form Release Agent: How to Apply It Without Staining or Soft Spots Read More »

Close-up of rough concrete surface with blurred background lights

Concrete Surface Blisters: Finishing Causes and How to Prevent Them

Introduction Concrete surface blisters are raised pockets on the finish caused by trapped air or moisture beneath the surface. They usually form when the surface dries too quickly or moisture moves upward as the concrete sets. Causes include finishing while the surface is still soft, excessive water in the mix, or rapid evaporation from sun,

Concrete Surface Blisters: Finishing Causes and How to Prevent Them Read More »