Brick & Block

Brick & Block covers practical how-to guides for masonry projects, from small repairs to building simple walls.

You’ll find articles on mortar basics, mixing and tooling joints, setting bricks/CMU blocks, fixing cracks, and common beginner mistakes. I focus on real-world steps and materials that actually work on site.

If you’re planning a brick, block, or mortar project, start here and work your way through the basics before you jump into the more specialized guides.

Box fan on concrete floor with dark moisture stains on wall

Concrete Block Moisture Problems: Capillary Rise, Sealers, and Interior Coatings That Make Sense

Introduction Moisture problems in concrete blocks happen when water wicks through the wall, showing up as damp patches and mineral blooms. This is commonly caused by capillary rise and can occur even when the surface seems dry. To deal with it, you need to identify where the moisture is coming from and how the wall […]

Concrete Block Moisture Problems: Capillary Rise, Sealers, and Interior Coatings That Make Sense Read More »

close-up of deteriorated cracked concrete surface with peeling paint

Repairing Cracked Concrete Block Corners: Stitching vs Rebuild (and where the line is)

Introduction Stitching is a repair method that reinforces cracked concrete block corners without tearing down the wall. It typically uses patch material and stitching along the crack to help hold blocks in place. Check the crack width, water intrusion, and follow the manufacturer instructions and local rules before starting. Rebuild is when you take out

Repairing Cracked Concrete Block Corners: Stitching vs Rebuild (and where the line is) Read More »

Smooth light gray concrete wall surface

Surface-Bonding Cement on Dry-Stack Concrete Block: When It’s Allowed and How to Reinforce

Introduction Surface-bonding cement on dry-stack concrete block is a thin adhesive layer applied to the face of stacked blocks to improve bond and stability when allowed. It’s a practical option you can use to reinforce and tidy up a wall that’s already in place. Check your local rules and manufacturer instructions to know if this

Surface-Bonding Cement on Dry-Stack Concrete Block: When It’s Allowed and How to Reinforce Read More »

Open white window above thick smooth concrete sill

Concrete Block Window Sill Water-Shedding Details: Slopes, Drips, and Smart Sealant Placement

Introduction A concrete block window sill water-shedding detail is the built-in slope and drip setup that directs rain away from the wall and into drainage. We’ll set a gentle slope on the top surface and add small drip features to keep water from riding back into the opening. Check local rules and manufacturer guidance for

Concrete Block Window Sill Water-Shedding Details: Slopes, Drips, and Smart Sealant Placement Read More »

Close-up of concrete beam to column connection with visible joint

Choosing Caulk for Concrete Block Joints: Polyurethane vs Hybrid vs Silicone (and why it matters)

Introduction Caulk for concrete block joints is a flexible sealant used to close gaps between concrete blocks to keep out water and air. Choosing the right sealant starts with the joint type and weather exposure, then applying it with the right tools. Keep in mind it should bond to masonry, cure properly, and be compatible

Choosing Caulk for Concrete Block Joints: Polyurethane vs Hybrid vs Silicone (and why it matters) Read More »

Closeup of stacked gray concrete cinder blocks

Keeping Concrete Block Sealant Lines Clean: Masking, Tooling, and Smear-Free Cleanup

Introduction Keeping concrete block sealant lines clean means preventing excess sealant from smearing onto the block faces by masking and timing your work. Mask surrounding edges with tape or masking paper before you start, and plan to tool the bead cleanly as you go. Check the product label for guidance on working time and curing,

Keeping Concrete Block Sealant Lines Clean: Masking, Tooling, and Smear-Free Cleanup Read More »

unfinished concrete block building under clear sky

Foundation Parging Over Concrete Block: Durability, Breathability, and Grade Detailing

Introduction Foundation parging over concrete block is the thin coating that seals and smooths the surface while letting moisture breathe. It’s a DIY-friendly job, but it needs clean blocks, good adhesion, and careful edge detailing. Plan your surface prep, mix consistency, and control of joints before you start. Durability comes from proper prep, correct application,

Foundation Parging Over Concrete Block: Durability, Breathability, and Grade Detailing Read More »

Brick chimney with metal flashing on wooden shingle roof under blue sky

Brick Flashing and Weep Holes at Ledges: How Water Is Supposed to Escape

Introduction Brick flashing and weep holes at ledges are features that let water escape from behind brickwork. They direct runoff away from the wall and help prevent moisture damage. As a DIYer, you’ll inspect for proper placement and unobstructed openings before finishing the ledge. Start by checking that flashing is in place under the brick

Brick Flashing and Weep Holes at Ledges: How Water Is Supposed to Escape Read More »

Close-up of stacked stone veneer wall with varied shapes

Brick Veneer 101: Air Gaps, Weeps, and Why “Stuck-On” Systems Fail

Introduction Brick veneer is a non-structural facing that sits on a wall with an intentional air gap to vent moisture. Understanding why air gaps and weep holes matter helps you spot issues before they show up. This setup is what keeps brick veneer performing without relying on the wall itself for support. Stuck-on brick systems

Brick Veneer 101: Air Gaps, Weeps, and Why “Stuck-On” Systems Fail Read More »

Pile of broken red bricks and rubble

Spalling Brick Diagnosis: Freeze-Thaw, Salts, and the “Stop the Water” Plan

Introduction Spalling brick diagnosis is identifying why bricks are flaking or crumbling due to freeze-thaw, salts, or moisture. This is a hands-on check to help you decide what needs repair and how to stop further damage. Look for cracking, hollow sounds, powdery surfaces, or powdery efflorescence as clues. Start by stopping water entry and planning

Spalling Brick Diagnosis: Freeze-Thaw, Salts, and the “Stop the Water” Plan Read More »