Foundation repair is oftentimes misrepresented. There are facts out there that just don't add up. In fact, the people spreading the information have inaccurate information, thus confusing others. We want to reduce the confusion and convey the truth.
Myth #1: A foundation usually cracks because of mistakes made during the construction process, like the use of poor-quality concrete or inadequate reinforcements.
Reality: It's possible for foundation cracks to occur because poor-quality concrete has been used or because the steel reinforcement hasn't been properly installed. However, even a strong, perfectly built foundation wall can crack from soil pressure or soil settlement.
It's important to keep in mind that concrete is strong in compression, but weak in tension. It can support weight from above, but it can't stretch or bend. Expansive soil that's pushing against a foundation wall can actually prevent the masonry from stretching or bending and instead, cause it to crack!
If soil settlement has left an empty "void" below a slab or footing, there's a good chance that the unsupported weight of the structure will cause the concrete to crack and settle into the recess. This damage can occur even when the foundation was built correctly.
Myth #2: Most cracks in concrete walls and floors can be effectively repaired with modern high-strength epoxies.
Reality: Industrial epoxies have impressive properties. They're waterproof, strong, and equally effective at sealing joints that are tight or gapped. But epoxies are far from a cure-all in terms of repairing cracked foundations.
A structural crack that has been repaired with epoxy is likely to open up again if the soil conditions that caused the crack haven't been addressed. Experienced foundation repair contractors in the Illinois area know that the first step in repairing a cracked foundation is to stabilize the soil and treat the conditions that caused the crack in the first place.
In many cases, foundation piers or anchors can be installed to connect a damaged foundation to stable soil and even lift or push damaged sections so that cracks can close.
Myth #3: A foundation made from concrete block is more likely to crack or sustain damage than one made from poured concrete.
Reality: Foundation repair contractors in IL are familiar with both concrete block and poured concrete foundations. When a concrete block foundation cracks, there's usually a "stair-step" crack pattern that follows along the mortar joints between each block.
Conversely, a poured concrete foundation can have cracks that extend vertically, horizontally or diagonally. When properly sized and built, a concrete block or poured concrete foundation will have more than enough strength to support the walls and floors of a home or addition.
Saturday, 25 February 2012
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