Concrete Patio Issues

With age, concrete eventually cracks and splits. Is this inevitable, or is there anything homeowners can do on their end to prevent concrete from cracking and sinking? Find out why concrete sinks and what you can do on your end to minimize the odds of damage occurring.

What Causes Concrete to Sink?

Before we talk about prevention, it helps to understand why concrete sinks and slopes in the first place. The cause has to do more with the base the slab was built on rather than the concrete itself. The soil beneath the slab may not have been compacted properly during installation.

Another possibility is that the edges that the slab sits on weren’t properly backfilled or were filled with soft soil and loose aggregates. Over time, this will allow moisture to seep in, leading to soil contraction and expansion.

How to Prevent Concrete from Cracking

The methods below reinforce concrete strength. We recommend professional implementation unless you have a knowledgeable background in slab repair.

One simple method homeowners can do on their end is to make sure their downspouts point at least five feet away from all concrete. Puddling water is bad for concrete. Proper drainage that directs water away is vital, especially during rainy periods.

Prevention methods best left to a professional include sealing gaps between slabs. This is done using a backer rod with silicone caulk or polyurethane as the sealer. If an inspector suspects poor soil compaction, then he may suggest digging out the slab or utilize slab jacking to fill and compact the soil. Tightly compressed soil ensures a stable base, as it eliminates small pockets of air that allows moisture to accumulate. The soil should be compacted at a depth of four to six inches for long-term results.

To summarize, prevention comes down to these three keys: drainage, soil compaction, and sealing. For maximum protection, be sure all three elements are in place. It’s not enough to just implement one or two out of the three and hope for the best.

We Ensure a Solid Concrete Base

Our remediations include slabjacking or mudjacking. We also perform prevention measures. We prevent concrete from sinking by fortifying the base. The Dallas Fort Worth area is known for sandy and loose soil, making prevention all the more necessary. We advise residents to consider prevention to offset a more costly repair or replacement down the road.

Concrete is ultra-durable, which is why it’s a mainstay in patio walkways. However, it is still vulnerable to damage, which may manifest on the surface in the form of cracks and splits.

Hairline cracks are normal with concrete patios. Find out below how to fix them, and why calling in a professional is always advisable.

What Caused the Crack?

The solution is dependent on the cause of the fracture. With patio concrete, the cause is usually attributed to loose and shifting soil underneath, which causes the concrete to constantly move and eventually settle or slope at an uneven angle. Often, during installation, the concrete is poured on uncompacted soil that is improperly backfilled. Loose soil is especially commonplace in the Dallas Fort Worth area, which is known for clay soil conditions.

Other causes include slab installation without proper expansion joint placement. Drainage issues are another cause. Downspouts may release water directly on the concrete, where it reaches the soil and causes it to expand and contract. When concrete consistently moves, hairline cracks may begin to form, which may expand and cause the slab to completely split apart.

So, what are the repair methods for hairline cracks?

Concrete Raising

Concrete patio raising for hairline cracks is the most viable solution in most instances. Remember, the crack appeared in the first place due to the shifting soil beneath. With concrete raising, filler is pumped into the soil beneath to eliminate gaps and pockets of air. This compacts the soil and prevents future damage. As for existing hairline cracks, they can be resurfaced, restoring the concrete to its original position.

Caulk Sealing

Urethane caulk is a sturdy substance used to patch existing cracks. Even when the caulk dries and hardens, it remains flexible enough to allow the crack to move without causing further damage.

We must point out, though, that this solution only masks the bigger underlying problem; that is, the loose soil beneath. Without concrete raising, caulk sealing is merely a band-aid and a temporary fix. This method should always be a part of a bigger procedure that includes concrete raising.

Epoxy Injection

With this method, the crack is cleaned before epoxy is applied to restore the surface. However, like caulk sealing, this method does not address the soil issue. Even if the surface is repaired, the soil beneath will continue to cause the concrete to shift. More cracks will follow.

We Restore Concrete

Leave it to Align Foundation Repair to repair the cause of hairline cracks in concrete patio. A surface crack is often a sign of a more serious problem and may eventually lead to the concrete settling or sloping. Give us a call if you notice even a seemingly negligible crack forming in the concrete patio.