![]() ![]() Sustainable blocks made with 70% recycled “ash’ content. Lightweight Blocks-The Lightweight block range is designed for easy manual handling and reduced WH&S risks being 40% lighter than dense weight concrete blocks with a slightly open surface texture. Typical uses for concrete blocks include fire walls, load bearing or non-load bearing walls, fences and privacy walls plus many more. The size range includes, 90mm, 140mm, 190mm, 240mm and 290mm width blocks in various types. Quality Assured to ISO 9001:2015 & Australian made.Ĭoncrete Blocks- The Concrete block range is dense weight and natural grey in colour. The large selection of concrete building block types (as detailed below) are all co mpliant with As 3700. Poured concrete foundations have low R-values of less than 3.Island Block & Paving have options to suit most walling applications.Dry spots in the concrete wall may occur by improper grading or poorly planned outdoor construction.Leaks can happen if the foundation drops, settles, or sinks due to the soil below the foundation collapsing.Poured concrete walls may leak moisture through non-structural cracks in the wall (where the wall and floor meet, at the top of the foundation wall or through the porous concrete).Poured concrete can crack and leak if not prepared correctly.Water leakage issues in poured concrete foundations.Contractors may find it difficult, time-consuming, and costly to truck in wet concrete to the job site.Poured concrete foundations cost more than CMU block foundations.If spalling (when the concrete surface peels, crumbles, or flakes off) occurs during curing, the poured concrete foundation can lose its strength.The Cons of Poured Concrete Wall Foundations A poured wall doesn't have joints like a block wall, so it is easier to waterproof.Poured concrete walls have better lateral strength than CMU block foundations, which improves their resistance to pressure from water and soil.The strength, density, and joint-free construction of poured concrete foundations minimizes water issues.They take less time to construct than CMU block foundations.The Pros of Poured Concrete Wall Foundations Rebar, installed in the footing, limits weak points and joints. Next, in one continuous pour, workers pour concrete into wooden forms to harden (cures) on site. Traditional poured concrete foundations involve constructing and properly securing large, heavy, wooden walls. Traditional Poured Concrete Wall Foundations CMU block walls have low R-values ranging from 2 to 3.CMU block foundations have good load-bearing strength however, the foundation will lose its lateral strength if not fully grouted with rebar.CMU block foundations may bow and buckle if the water in the soil around a structure builds up, resulting in costly repairs.Water and weather wear down the mortar used to join the CMU blocks together - this can cause leaks.Improperly reinforced CMU blocks produce weak foundations. ![]() A CMU block wall often requires installing an air and moisture barrier, which adds another trade and more labor to the foundation project.8-in blocks weigh 36lbs, 10-in blocks weigh 42lbs. Concrete masonry units are heavy to handle.The Cons of Cinder Block (CMU) Foundation Mortar secures the blocks together, which rest on concrete footings. To optimize strength and stability, workers install the blocks in a running bond pattern and may insert steel reinforcing bars in the core of the blocks. However, sizes can vary depending on the building's weight load. Cinder Block (CMU) FoundationsĬMU block foundations often use large (8-in or 10-in wide and 16-in long), hollow concrete blocks. These materials are easy to install and can increase structural lifespan, but what sets them apart from each other? And which is the better choice for your project? We cover the differences between CMU blocks and poured concrete foundations below so that you don’t have to learn from trial and error. Two of the most effective methods for creating wall foundations are poured concrete walls and cinder blocks - more professionally known as Concrete Masonry Units (CMUs). Structural foundations are the backbone of every new building, which is why it’s critical to make sure that they are done right. ![]()
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