As the name suggests,
structural cracks occur because of poor construction sites, overloading or poor soil bearing.
Telltale signs of structural cracks in your foundation are:
- Stair-step cracks.
- Cracks on foundation slabs or beams.
- Vertical cracks that are wide at the bottom or top.
- Cracks measuring 1/8″ in width.
A: Wall cracks are fairly common in both new and older homes and are often the result of normal house “settling” that can quickly, inexpensively be remedied by re-taping the joints—the seams where the drywall panels meet.
A crack is more serious when it's between five and 15 millimeters wide (0.5 to 1.5 centimeters, or up to half an inch) as the cause could be more serious than simply dried out plaster or a house that is settling.
These cracks are a normal part of home settling and can occur in ceilings, walls, and even floors. When it comes to spider web cracks, size is important. If the cracks are small, there isn't much to worry about. However, if they are more than 1/16 inch wide, there could be a larger structural problem at stake.
Causes of Wall CracksMost cracks are due to the following problems: Foundation Settlement: Settlement occurs when there are weak bearing soils, poorly compacted soil, changes to the level of moisture in the soil, or soil consolidation beneath part or all of your foundation.
The simple answer is yes. Vertical cracks are usually the direct result of foundation settling, and these are the more common of foundation issues. Horizontal cracks are generally caused by soil pressure and are normally worse than vertical cracks.
For deeper hairline cracks, you may want to use a filler to fill up the cracks before applying a new layer of paint in the affected area. However, if an extensive area has been affected, you will need to scrape off the paint and then sand the entire area to even out the edges before applying a fresh coat of paint.
Homeowners insurance will cover foundation repair if the cause of damage is covered in your policy. But damage caused by earthquakes, flooding, and the settling and cracking of your foundation over time are not covered.
If you don't fix your foundation, mold and mildew cause the wooden members under your pier and beam home to deteriorate. Whenever there are cracks or poor sealing around a pier and beam foundation, water can make its way into the crawl space.
The process can be lengthy and expensive, costing anywhere between £5,000 and £50,000 depending on the size of the property and the extent of the damage. Though figures differ, it is estimated that as few as only 10% of properties suffering from subsidence will require underpinning.
Cost to Repair Cracked Concrete DrivewayMost contractors charge an average of $2.00 to $2.50 per square foot to apply a filler and sealant to the damaged area. For a 250 square foot repair, you can expect to pay around $500 to $625 for the concrete driveway crack filler application and acrylic sealant.
Best Methods of Foundation Repair
- Underpinning.
- Shimming using supplemental piers.
- Foundation wall repair.
- Water Management.
- Shimming using existing piers.
- Grouting.
- Mudjacking.
- Stabilizing foundation soil.
Since foundation repairs are generally not covered in your home insurance, it can be hard to tell if the cost is actually worth it. While it really depends on what your end goal is, the answer is typically yes: foundation repairs are worth the cost.
If your house is built on a cralwspace and it's sinking in the middle rather than the exterior—you may be able to fix it yourself. If your house is on a slab, or if it's on a crawl space and is settling around the perimeter—you absolutely need a professional foundation repair contractor.
Repairing Structural DamageHome structural repair should be done as soon as possible to avoid further damage or developing more severe problems. Whether you experienced a water leak or noticed structural issues in your home, you'll want to get a professional to assess the damage.
Quick-fix solutions such as epoxy fills for surface damage, including hairline cracks and spalling, might last some five years or more. Carbon fiber straps, wall anchors, and other heavy-duty fixes used to address bowing walls should also last for several years, if not a decade or more.
Instructions
- Score the Crack.
- Cut the Paper Drywall Tape.
- Spread the Joint Compound.
- Apply Tape to the Crack.
- Mud Over the Tape.
- Sand the Repair.
- Apply an Additional Mud Coat (optional)
- Clean the Area.
Typically, larger cracks (those bigger than 15mm in width) are a cause for concern and should be inspected by a structural engineer. Subsidence cracks usually appear quite suddenly, rather than slowly over time. A large crack running in a vertical direction can also be a tell-tale sign of structural damage.
Every house will see some settlement over the years. In fact, a few inches of settlement is nothing to worry about (assuming this settlement is evenly distributed across the structure). Soil expansion and contraction cannot be controlled and quality construction will hold up under normal variances.
Typically, plaster ceiling cracks have two causes: house settling and temperature or moisture fluctuations in an attic, which result in the expansion or contraction of framing members. Solution: Homeowners can fill these commonly occurring hairline cracks with new plaster and repaint the ceiling.
Drywall cracks can occur in new and older structures. They develop due to a faulty drywall construction and often a natural sign of aging and settling. Cracks also often form when seasons shift due to changing temperatures and humidity levels.
Cracks in plaster and drywallCracks that are horizontal or vertical are generally a sign of the plaster drying or shrinking. You'll often see these types of cracks in newer homes or after you've had work done and they aren't really anything to worry about.
Polycell Crack-Free Ceilings is a great way to restore cracked ceilings to a smooth 'good as new' finish. It's flexible paint formulation uses Polyfilla technology to not only cover cracks but prevent them from reappearing. A smooth and flexible paint, that permanently covers cracks and stains.
Hairline cracks in a concrete slab are rarely a cause for concern. They can be controlled, but not eliminated. A crack in a slab of 1/8 inch or less is typically a normal shrinkage crack and not a cause for concern.
Protecting ConcreteThis problem is minimized when the steps or walkway are built using air-entrained concrete. A concrete sealer can reduce freeze-thaw damage by reducing the water absorbed by the concrete. One effective product that protects concrete from cracks is Sikagard 701W.
Mg Knights property services. "Hi Angie, it is normal for new plaster to get hairline cracks as it dries out due to the material shrinking. It is especially prominent around ceilings if you have had new plaster boards put up.
Thin hairline cracks can usually be repaired with a vinyl concrete patching compound. If recommended by the manufacturer, apply a concrete bonding adhesive or primer/additive to create the best bond possible between the old surface and the patching material.
