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how to

A frustrated home owner with foundation problems

  1. Overwatering

    Overwatering a lawn is a common cause of foundation problems in areas with Vertisols (Expansive Soils).

    A frequent source of damage is the differential swelling caused by pockets of moist soil adjacent to dry soil. For example, lawn and garden watering creates a moist zone on the exterior of a foundation, whereas the interior is dry; this creates differential swelling pressure on foundation elements.

    source: Damage to Foundation from Expansive Soils (pdf)

    Texans tend to overwater due to the unpredictability of the weather patterns. However, maintining a constant moisture level in the soil surrounding your foundation is imperative for home owners. Overwatering exerts added pressure on foundation walls which can cause them to swell upwards, thus causing the infamous, unsightly cracks to appear in walls.

    Watering – Year-round watering should be planned to avoid too much moisture in the rainy season and too little in the dry season. Automatic watering systems may help, but they can require a seasonal adjustment and attention to maintenance. If the valve accidentally sticks open, major damage could result.

    source: Living with Expansive Soils (pdf)

  2. Installing Landscaping too Close to a Foundation

    When considering landscaping for your house, it is important to keep plants a safe distance from the foundation, usually 5 feet or more. Landscaping planted too close to a foundation can cause the soil to expand through overwatering, deprive the plants of moisture (when the roots reach under the foundation), or in cases of trees cause foundation problems because of their roots.

    How Close to the House Should You Place Foundation Shrubs?

    Having shrubbery right up against your house isn’t good for the house, the shrubbery, or for you! So keep the following guidelines in mind when planning a foundation planting:

    Locate good-sized shrubs (6 feet tall or higher at maturity) in such a way that their mature foliage will remain at least 5 feet away from the house. You can get away with planting shrubs that stay shorter a bit closer to the house. Where you live also makes some difference. In hot, humid climates, you’ll want more air circulating between the house and the foundation shrubs, to discourage rot. Adequate spacing between the plants themselves, too, is important, to reduce disease and maintenance.

    source: David Beaulieu – About.com:Landscaping

  3. Improper Installation of Swimming Pools

    Swimming pools installed improperly can lead to water seepage into the soil. In Central Texas, the expansive soils will absorb this water and put increased pressure on your home’s foundation. Insure that proper waterproofing has been installed when purchasing a home with a swimming pool

    As swimming pools are always in direct contact with water and the hydrostatic head is very high, the waterproofing of swimming pools has to be considered very seriously from beginning and adequate steps are to be taken to ensure their water tightness.

    source: Swimming Pool Protection System (pdf)

    Diagram detailing pool seepage Pool shells always leak some amount of water from natural percolation through the structural gunite skin. If the pool is close enough to adjacent foundations, the entire building can be lifted differentially.

    source: Damage to Foundation from Expansive Soils (pdf)

  4. Improper drainage

    Proper drainage is an essential part of any home design. Included in this are gutters which deposit the water far enough away from the foundation to prevent it from influencing the foundation. Also a proper grade in which the land around the house gradually slopes downward, away from the house and deposits runoff water on the streets.

    The foundation should always be provided with adequate drainage, and the soil properly prepared to minimize changes in soil moisture and differential movement.

    source: US Department of Defense: Foundations in Expansive Soils (PDF) section: 7-1

    Superior Foundation Repair recommends depositing water from gutters and downspouts 10 feet (or further) from home foundations located in areas with expansive soils. Superior also recommends a grade of 3-5% sloping away from the foundation.

  5. Interior Remodeling

    When remodeling your home, it is important to understand why your home was designed the way it was in the first place. A major remodeling project which shifts the load of the house significantly, can adversely affect the original design of a foundation. Removal of supporting walls can wreak havoc. Also installing add-ons to a house situated on expansive soil can have the reverse effect intended, if not properly desinged for expansive soils. Make sure your contractor uses a design which will not be adversely affected by shrinking and swelling.

    Interior finishing. One of the most costly mistakes a homeowner or careless contractor can make is to defeat the design purpose of a floating floor slab. A floating garage or basement floor slab is designed to move freely. Therefore, any furring, paneling, dry wall, or interior partitions added to a basement or garage must maintain this freedom of vertical movement. Any added walls or wall coverings should be suspended from the existing walls or ceiling, and should not be attached to the floor slab. A minimum void space of 3 in. should then be provided just above the floor slab. This void space may be covered with flexible molding, or inflexible molding attached to the floor rather than the wall. Although these recommendations provide for 3 in. of upward swell of the soil beneath the floor slab, more void space may be necessary in areas of highly swelling clay. source: Colorado Geological Survey: Mitigation and Land Use (Swelling Soil)

Should your house experience foundation problems due to improper maintenance. Contact Superior Foundation Repair immediately for a Free Foundation Repair Estimate on the extent of damage done to your home.

Read our Foundation Maintenance tips for more information on maintaining a healthy home foundation

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Photo: Expansive Clay SoilAccording to the Austin-American Statesman, this years El NiƱo weather pattern could ease the drought conditions in Central Texas. What does that mean for homeowners in the Central Texas area? It means its time for a period of soil swelling.

Central Texas sits in an area of the United States which is highly affected by expansive soils. (source: geology.com)

Expansive soils contain minerals such as smectite clays that are capable of absorbing water. When they absorb water they increase in volume. The more water they absorb the more their volume increases. Expansions of ten percent or more are not uncommon. This change in volume can exert enough force on a building or other structure to cause damage.
source: http://geology.com/articles/expansive-soil.shtml

With the coming wet weather, Central Texas soils will be absorbing moisture, and subsequently expanding which can lead to increased strain on home and building foundations.

In periods of increased rainfall it is important to be cautious when watering your foundation. Ovewatering causes the soil to absorb too much water, thus expanding, and possibly leading to foundation problems. A good tip for watering your lawn/foundation is to water it enough to keep your plants alive and healthy, saturation is neither good for plants nor foundations.

For the time being, however, water restrictions are still in effect, so overwatering should not be an issue until water restrictions are lifted completely.

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An Excellent video on keeping your foundation moist in drought conditions

Article on geology.com about Insurance companies and foundation repair insurance.

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Foot in the door foundation repair bidsToday we are going to take a look at the practice that some firms use called “Foot in the door” bids.

What is a “Foot in the door” bid?

  • This is a bid in which a firm comes to a house to inspect a foundation, roof, plumbing, or other service and offers a bid for partial repair, which is much lower than any of the other bids a customer receives. For the purposes of this blog we will focus on foundations.

In this example we will use Firm ABC, Firm JKL, and Firm XYZ as our firms offering bids.

  • Firm ABC comes to the house, inspects the foundation and offers a bid of $8,000 with the job lasting 3 days and minimal disturbance to garden or landscaping.
  • Firm JKL comes to the house, inspects the foundation and offers a bid of $10,000 with the job lasting only 2 days and considerable disturbance to garden or landscaping.
  • Firm XYZ comes to the house offers a bid of $3,000 for 1/4 of the house with the job lasting 3 days and disturbance to only the part of the house being repaired.

All needed repairs for a typical house with moderate foundation damage start around $8,000 -$12,000 but can go as high as $20,000 -$30,000.

via Cost of Foundation Repair – Get Prices and Estimates – CostHelper.com.

Many times, a firm will come to a house, inspect a foundation and get a feel for what a customer is wanting to spend. Most people are not going to be ready to pay $8K – $12K for a foundation repair.

Possibly only part of the house is currently being affected by foundation problems. In this case firm XYZ may claim that only 1/4 of the house is currently being affected by foundation problems and that for a much lower price ($3,000 in this case) the problem can be fixed.

Sounds great, right?

Wrong!

Logically if part of a house is sagging or experiencing foundation problems the soil associated with the house is the same all over, and more than likely at some point in the future another part of the house is going to need foundation repair.

Firm XYZ knows that, once the next part of your house begins sagging, you are more than likely going to call them back to do the repairs on that part of the house. This means more disruption to your landscaping several more days of having firm XYZ at your house, and more headache.

Let’s say over 4 years your whole house ends up needing foundation repair, you pay $3000 each time firm XYZ comes out and they are there for 3 days each time. That would be a total of $12,000 dollars over 4 years plus 12 days of repair time on your house. Not to mention the time they spend coming out to inspect the house each time they are called.

Compared to the other 2 bids this would be much more time than necessary and more than both bids.So in the long run the customer would have spent much more than they had planned and would have had much more time dealing with foundation repairs than necessary.

Be smart, if a house is having foundation problems the whole house needs to be fixed, even if some parts of the house are not showing signs. Putting a band-aid on a problem doesn’t heal the wound.

For a free bid on foundation repair in Austin, Texas contact Superior Foundation Repair. Superior also offers a lifetime transferable warranty on all foundation repair work.

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