Search Results for: mortar type

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Adding control joints in block walls: where to place them and how to detail the break

Introduction Control joints in block walls are intentional breaks that help manage movement and crack control. They should be planned with the wall’s stress points in mind and placed at key locations. Where to place them depends on wall length, layout, and climate, so identify long spans and changes in the wall condition. Detail the […]

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Mounting shelves on block walls: fasteners that don’t crumble the web

Introduction When mounting shelves on block walls, use fasteners and anchors designed to grip blocks without damaging their inner web. Choose from practical options such as masonry screws, toggles, and anchors designed for hollow or solid blocks. Select based on your wall type and the expected weight of your shelves. When installing, consider the drilling

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Person drilling concrete wall with orange and black cordless drill

Testing anchors in hollow block: real-world pull-out results from scrap-wall experiments

Introduction Testing anchors in hollow block is the process of measuring how much force it takes to pull an anchor out of a hollow concrete block. This introduction explains what to expect from real-world, hands-on testing using simple, improvised walls. It focuses on practical outcomes you can relate to when mounting fixtures in hollow blocks.

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Person leveling fresh concrete slab with screed board

Adding a sill plate on block: leveling, gaskets, and anchor spacing

Introduction Key takeaways Assess project scope to determine sill plate replacement needs on block foundations. Check leveling, shims, and plinth blocks to achieve flat, stable seating. Choose compatible gaskets and moisture barriers to minimize condensation and rot. Proper anchor spacing depends on block height and plate thickness per code. Use correct fasteners and weatherproof coatings

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close up of textured wet plaster surface

Repairing spalled block faces: patch materials and surface prep that lasts

Introduction Repairing spalled block faces involves restoring a damaged masonry surface by cleaning, patching, and smoothing to prevent further deterioration. First assessing whether you should repair or replace is essential; if the damage exposes hollow cores or undermines structural integrity, replacement may be wiser. Prepare the surface by cleaning loose material and chipping away rough

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Worker applying stucco on cinder block wall outdoors

Parging vs stucco on block: prep, bonding, and avoiding delamination

Introduction Parging and stucco are two surface finishes for block walls, with parging being a thin cement-based coating and stucco a thicker, textured layer. Both aim to prevent moisture intrusion and create a smooth or textured exterior. The article compares prep, bonding, and how to avoid delamination in each method. Surface prep should start with

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Waterproofing block foundations: coatings vs membranes vs drainage boards

Introduction Waterproofing block foundations means choosing between coatings, membranes, or drainage boards to keep moisture from entering the structure. Coatings seal the surface, membranes create a continuous barrier, and drainage boards help direct water away from the wall. Think about how water will contact the wall and what prep is needed before any product is

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Row of modern townhouses with siding and brick veneer

Vertical cracks in block walls: shrinkage vs movement and how to monitor them

Introduction Vertical cracks in block walls are cracks that run straight up and down the masonry and are often linked to shrinkage or movement in the structure. They can form as the wall settles or as the blocks and mortar dry and adjust over time. Monitoring these cracks involves simple visual checks and noting any

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Curved block retaining wall without visible cracks

Stair-step cracks in block walls: settlement clues and when a crack is ‘normal’ vs structural

Introduction Stair-step cracks are diagonal cracks that follow mortar joints in block walls, forming a stepped pattern. They often point to movement in the wall due to settlement or shifting soil. In homes and foundations, these cracks can appear after changes in moisture or load. Not every stair-step crack is a sign of a major

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Person cutting concrete with orange power saw and protective boots

Cutting concrete block units: dust control tips and fastest methods for clean ends

Introduction Cutting concrete block units involves trimming and finishing blocks with a focus on dust control and clean ends. This introduction provides practical, hands-on guidance for selecting tools and following safe, efficient techniques. You’ll learn dust control steps, proper cutting methods, and the safety gear that helps you work cleanly. From saws and masonry bits

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