What causes concrete to crack, crumble, or sink here in Salt Lake City?
Concrete is tough, but it is not indestructible. This is especially true with what we deal with here in the Salt Lake Valley. The biggest problem for most concrete issues is our crazy freeze-thaw cycles. Water gets into tiny cracks. It freezes and expands. Then it thaws. This makes those cracks bigger. It is a constant battle from October through April. That is why you see surface flaking and pitting. We call this spalling.
Then there is our soil. A lot of Salt Lake City has expansive clay soil. When it gets wet from snowmelt, irrigation, or heavy rains, it expands. When it dries out, it shrinks and settles unevenly. This constant shifting underneath your concrete creates voids. Without that support, your slab starts to sink. Poor compaction when the concrete was first poured can also play a role. Drainage issues can also cause problems. Tree roots can also cause problems.
How do I know if I need a repair or a full replacement?
This is probably the most common question we get at Concrete Driveway Pros Salt Lake City. It is a good question because you do not want to spend money on a repair that will not last. You also do not want to rip out perfectly good concrete. Here is how we usually break it down:
- Repair is often the right call when: The damage is mostly cosmetic. This includes minor cracks that are less than 1/4 inch wide. Small spalls are also good for repair. If the slab has settled but is still structurally sound, repair is also an option. Concrete lifting and crack sealing can often make your concrete last much longer.
- Replacement is usually necessary when: You have severe structural issues. This means large cracks that go all the way through the slab. Significant crumbling or spalling also means replacement. If the concrete has heaved or settled so much that lifting is not possible, replacement is needed. If multiple repairs have failed, replacement is often the more cost-effective long-term solution. Serious drainage or foundation problems underneath that need a complete overhaul also mean replacement.
A good rule of thumb is this: if you can slide a nickel into the crack, it is serious. If one side of a crack is higher than the other, that is a sign the subgrade has failed. Do not wait on these problems. They only get worse.
What are the main types of concrete repair?
There is no one-size-fits-all solution for Concrete Driveway Pros Salt Lake City. Here are the main types of concrete repair we use:
- Crack Filling/Injection: For cracks, we use specialized sealants. These are often silicone-based like NexusPro. They are designed to be flexible and stand up to our harsh weather in Salt Lake City. Unlike the products you buy at the big box store, these resist UV rays. This means they will not crack, bubble, or dry out quickly. This prevents water from getting under the slab as well as causing more damage.
- Slabjacking/Concrete Lifting (Polyurethane Foam Injection): This is for sunken or uneven concrete. Instead of tearing out the old slab, we drill small holes. We inject a material underneath to raise it back into place. We prefer polyurethane foam. This is often called polyjacking or PolyLevel. It is lightweight as well as expanding quickly to fill voids. It also cures fast. Sometimes it cures in as little as 15 minutes for heavy loads. It is also water-resistant and will not erode like traditional mudjacking materials.
- Spall Repair/Overlay: When you have surface damage like flaking or pitting, we can patch it. We can also apply a thin layer of new concrete. This is called an overlay or resurfacing. However, with our freeze-thaw cycles in Salt Lake City, overlays can be tricky. Sometimes replacement is the better call for spalling. Water can get underneath and cause it to delaminate.
How long do concrete repairs usually last?
This really depends on the type of repair. It also depends on the quality of materials. How well you maintain it also matters. Minor surface repairs might last 5-10 years. Crack injections with quality epoxy or polyurethane can last 10-20 years. This is especially true if the original cause of the crack, like soil movement, is addressed. Resurfacing can last 5-12 years. In our climate here in Salt Lake City, it might be on the lower end of that range. This means maybe 5-10 years, even with proper sealing. The key is that repairs extend the life. They are not always truly permanent, especially with our temperature swings.
If the underlying issue, like unstable soil, is not fixed, the problem might come back. That is why Concrete Driveway Pros Salt Lake City always looks at the root cause.
Is DIY concrete repair worth it, or should I hire a pro?
For small, hairline cracks, you might be able to find a decent patching compound at a hardware store. But honestly, for anything beyond that, you are usually better off calling in a professional. Concrete repair is not just about filling a hole. It is about understanding why the damage happened. It is also about choosing the right method to prevent it from coming back.
If you try to mudjack yourself, for example, you are dealing with heavy materials as well as specialized equipment. If you do not address the underlying soil issues, you will be doing it again sooner than you think. In addition, a professional company like Concrete Driveway Pros Salt Lake City will have the right tools. We also have the experience. We often offer warranties on our work. It saves you headaches as well as money in the long run.
How much does concrete repair cost in Salt Lake City?
Costs vary a lot depending on the type and extent of the damage. It also depends on the method we use. For concrete lifting with foam, you are typically looking at $5 to $25 per square foot. A sidewalk repair might cost you $1,015 to $3,240. A garage floor could be $1,215 to $6,075. Crack repair using injection methods is generally less expensive than lifting or resurfacing. Resurfacing can range from $3-$10 per square foot. Remember what we said about our climate and resurfacing.
Compared to a full replacement, repair is almost always more affordable. For example, lifting a slab can be 1/5 to 1/10 the cost of replacing it. A full Concrete Driveway Pros Salt Lake City replacement, including demo and prep, can run anywhere from $6,000 to $12,000. This is $8 to $15 per square foot. So, repairing when possible can save you a significant amount of money.
What's the process like for concrete lifting?
When Concrete Driveway Pros Salt Lake City does concrete lifting, especially with polyurethane foam, it is a pretty clean and quick process. First, we assess the area. This helps us figure out the extent of the settling. Then, we drill small, dime-sized holes into the sunken concrete slab. Our team injects the high-density polyurethane foam through these holes. As the foam expands, it fills any voids under the slab. It also gently lifts it back to its original level. Once it is level, we patch the small injection holes. The best part is that it cures super fast. This often happens within 15 minutes. You can use the surface almost immediately. There is no waiting days for it to cure like with traditional mudjacking.
This method is great because it is minimally invasive. It does not mess up your landscaping. It also provides immediate, permanent support for your concrete in Salt Lake City.