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Foundation Repair Myths
Straight answers on Foundation Repair
The following Foundation Repair information pertains to Florida and South Georgia. The soil in these areas contain either sand or fatty clays. Different soils and foundation types require different repair methods. Therefore, there is not one magic solution for repairing all types of foundation repair in Florida or South Georgia. Below are two common myths.
Myth 1.) The best piling system is a "self testing system" driven to refusal. Steel systems are typically driven to rock strata, while pressed piling systems are more often, "driven to refusal". Refusal means that you can not push the pier system downward any deeper. In the case of pressed or pre-cast pilings or piers, this means the piling system has been pushed to compressed clay or possibly rock. Pressed concrete pilings are seldom driven deeper than 25 feet, and many areas achieve "refusal" at depths of 6-18 feet.
Here are actual comparisons of piling depths obtained during two foundation repairs. In each case, steel was used to obtain better depth, with much less strain on the structure.
|
Steel Pier |
Pressed Pier |
| Site 1 |
30 feet to refusal |
15 feet to refusal |
| Site 2 |
18 feet to refusal |
8 feet to refusal |
Myth 2.) Mud jacking is a good low cost way to lift a foundation. Seldom does mud-jacking give results that are satisfactory for the long run. Sometimes, mud-jacking is even destructive to the structure. Most companies only result to mud-jacking as a last resort for very poor built foundations and will obtain a damage waiver prior to beginning repairs.
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