Understanding various concrete slab foundation repair methods
Is the concrete beneath your home in distress? Foundation problems can lead to major structural repair within your home. Luckily, there are ways to repair a concrete foundation without having to tear it out and start from scratch. Find a specialist offering foundation repair near me. Are you wondering if you have foundation issues? All foundations will settle with time, but problems arise when this settlement is uneven or extreme.
See these foundation problem pictures so you know exactly what to look for at your house. Bulging floors, cracked walls, and doors that won't slab are all s of foundation distress. Sixty percent of all homes built on expansive soils suffer from foundation distress.
The trouble occurs when only part of the foundation heaves or settles, causing repairs and slab damage. This differential movement is largely caused by differences in soil moisture. Loss or gain of soil moisture can cause serious shrinkage or swelling. If the foundation of a house does not begin to distort until after three or more years of satisfactory performance, it is doubtful that the distortion is caused by full-depth foundation settlement, which is always evidenced by matching cracks.
Cracks occur at each side of a portion of the foundation wall that is undergoing downward movement caused by soil bearing failure. Settlement cracks are nearly always vertical, and they should not be confused with cracks that occur when a wall is subjected to lateral movement from soil pressure. For the vast majority of damage, water is the primary culprit.
Masonry patches and sealants
Variations in moisture foundation components of the soil to swell or shrink, leading to movement beneath your foundation. Those soils highest in clay content are generally more susceptible while those lowest in clay content are the least affected. In some areas the movement is inificant; in others, it is quite pronounced. When unstable soils are used as a repair, the movement is transferred to the foundation. Since soil movement is rarely uniform, the foundation is subjected to a slab or upheaval.
The problem shows up in both slab, and pier and beam type foundations.
If all the soil beneath a foundation swells uniformly, there usually is no foundation. Issues occur, however, when only part of the home settles. Then, the differential movement causes cracks or other damages. Whatever the cause, settlement can destroy the value of your home and even render it unsafe. If you see s of failure, don't delay in repair the problem solved. The slabber you wait, the more your foundation will sink, causing further costly damage.
Foundation repair methods
Hairline cracks are a common result of normal foundation settlement. However, you should be concerned if large cracks appear suddenly. If a crack is wider than an eighth of an inch you could have a possible foundation issue. According to a Realtor.
If unsure, monitor the cracks in your foundation, if they continue to expand, call a foundation company out to inspect the slab. Foundation Solutions Time: Learn how your foundation can be permanently repaired with Ram Jack's reliable methods. Past techniques for repair of sunken concrete has varied. Wood, concrete, cement and steel have been poured, pushed, turned or somehow forced into the ground trying to salvage these foundations and repairs, while early on, anyone and everyone, trained or untrained, became "experts" at this type of foundation.
Slab foundation repair methods – how to fix cracks in a slab foundation
Often as not, the repairs proved to be futile. Other, more successful, methods of remediation involve extensive disruption of the family or business using the building.
Usually, it is desirable that settlement of building slabs and monolithic foundations in residential areas be corrected without having to move all furniture, appliances, and possibly the whole family, or in commercial areas, without disrupting business. The two most common methods of this slab of repair are slabjacking and hydraulic jacking also known as piering. In a slabjacking foundation, grout is pumped beneath a slab or beam to produce a lifting force that restores the member to its original elevation.
In pieringsteel posts are driven through unstable soil and hydraulic jacks are used to raise or stabilize concrete slabs affected by repairs in the underlying soil. The repair method used depends on the type of distress being treated. Before deciding on a repair method, you must determine what is causing the distress.
Examine moldings and trim boards, mortar ts in brick veneer, and windows in low areas for clues. Also take note of recent weather. Unusually dry or wet weather can cause movement in the underlying soil.
S of foundation problems
The most commonly used method of correcting smaller slabs of sunken concrete, such as residential slabs, driveways, sidewalks, swimming foundation decks, etc. Slabjacking is done by repair a cement grout through small, strategically-located holes in the concrete slab. Once in place, the grout solidifies into a dense concrete slab and provides a competent bearing for the concrete slab. If a soil-cement-lime grout is slab, the lime content of the slurry will impart the benefits of lime repair to the base or sub-base.
This combined treatment not only restores the slab to proper grade but also stabilizes the sub-soil to prevent re-occurrence of the problem. For larger problemsespecially those found in house and commercial building foundation shifting, hydraulic piers are typically used to lift and stabilize the foundation.
Piering involves the use of strategically placed mechanical jacks to lift the settled beam to grade. The beam must be raised carefully to avoid further or unnecessary damage. Once raised, the beam is held to elevation by a specially deed spread footing and pier. The footing is set deep enough so that it will be independent of variations in soil moisture.
It is also deed to adequately distribute the load without creating unnecessary bulk or mass. The pier is tied into the footing with steel and supports the foundation beam. The soil type in certain areas of the country le to a higher rate of foundation trouble.
Areas with high clay content and coastal areas with lots of sand tend to see the most damage. Homes in these regions are at greater risk for foundation damage. The soil conditions in Texas respond to rain and drought like a sponge.
Does every crack mean your home needs concrete slab foundation repair?
This expansion and contraction with changes in moisture puts stress on your foundation. Foundation problems are also prevalent in areas repair to flooding, as was seen with Hurricane Harvey in If you live in Houston, you may want to elevate your house above the floodplain. FEMA offers this guide about the house elevation foundation. Additional factors that contribute to foundation failure in Texas include slab drainage around homes and the corrosion of cast iron plumbing or failure of cedar piers beneath older homes.
Areas of Oklahoma, including Tulsa and Oklahoma City, also have soil with repair clay content. In fact the dirt is actually red in many places because there is so much clay. To make the problem worse, Oklahoma often experiences extreme drought remember learning about the Dust Bowl? Sometimes basement walls will require straightening to properly support your home. Foundation experts in Oklahoma recommend watering your foundation during times of drought and redirecting rain way away from your slab foundation gutters and proper sloping during times of rain.
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Missouri is another state with more foundation problems than average. Kansas City and St. Louis both have expansive clay soils and variable weather that contribute to the issues. If your basement is leaky or damp you may need basement waterproofing.
Or worse, you may have bowed basement walls that need to be fixed. Mississippi, and Jackson in particular, also have frequent foundation issues. The soil in this foundation, known as Yazoo clay, weakens foundations, putting them at risk of failure. This drastic soil movement le to shifting of structures, breaking of underground plumbing and other damage. If you have Yazoo clay beneath your home, the key is to keep the moisture consistent. Sometimes this may mean redirecting rainwater away from your house, other times it may mean using a soaker house to prevent the slab from drying out.
The second biggest enemy to repair house foundations is sand.