Why Concrete Settles
Without addressing the core reason behind your sinking concrete, any repair done could be a temporary fix. At A-1 Concrete Leveling, we want our fixes to be permanent and last for years to come. Because of that, we are always looking for the root causes of every issue.
The reasons why concrete becomes uneven are many, but broadly speaking they can be boiled down to four primary causes, water issues, dry soil conditions, poor compaction, and animal and pest influences. Read below to get more information on each cause of concrete settling.
The number one reason concrete settles is water. Heavy rain or flooding can cause soil to soften, which can cause concrete to sink. Water that freezes and thaws in winter months can also break down soil beneath a slab weakening its ability to support the concrete. Finally, water that continually flows over, and under, concrete can wash out the subsurface, leaving voids that cause the concrete to sink. This can often be a result of downspouts running directly on the ground beside concrete sidewalks or driveways, or poor grading around your concrete slabs.
Long periods of dry conditions, like during a drought, can cause soils, mainly clay, to shrink. This can result in unstable sub-surfaces, and voids which often lead to sinking concrete. Also, dried out soil that is then soaked with heavy rain can also lead to sinkage due to voids being filled with now moistened soil.
During construction, sometimes contractors don’t compact the soil well enough before pouring footers or concrete slabs. This can often happen around foundations where backfill can be poorly compacted, or even worse, debris such as old tree stumps and building material can be shoved in holes before filling. When this debris rots or shifts it can result in sinking soil, leading to uneven concrete or sunken foundations.
Animals such as chipmunks, groundhogs and more can burrow under concrete, creating voids. These voids can also be widened by running water causing even more issues. Even pests like ants can cause quite a bit of perforation of the soil beneath concrete causing the slabs to sink.
A-1 Concrete Leveling and Foundation Repair has solutions to all of these problems. And without addressing them now, they will simply get worse, causing more damage and increased cost to repair.
DENVER SOUTH / DENVER NORTH / FT. COLLINS
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John can usually be found up in the Ft. Collins area. He's just as likely to show up to your door for your free estimate, as he is to be at the end of a hose, leveling your driveway. When it comes to concrete leveling, you could say it's in his blood.
Our patio was sinking towards our foundation and pushing rain water into a basement window well. A1 did a great job of leveling the patio and correcting the situation. The employees were experienced and knew what they were doing. I would highly recommend this company.