Category Archives: Concrete Floor Repair
The professionals at Polyjacking.com were recently called in to help with some floor leveling repairs that were needed on the campus of KU Edwards in Overland Park, KS. The campus was opened in 1993 and offers programs for undergraduates, graduates, and certificates along with professional and continuing education courses.
Floor Leveling and Void Filling on KU Edwards Campus
We were called in to take a look at an unlevel floor in one of the on-campus buildings. Upon inspection, we discovered that the floor needed to be raised by an inch due to voids that had formed under the building that had caused the floor to sink. The voids were around five feet below the surface and caused by a broken water line. Our experts leveled the floor and filled the voids, providing a stable foundation for the building and a safe environment for students and faculty members.
Please view the gallery below with some pictures from the work site. If you have any questions or would like more information, please contact us at Polyjacking.com.
Pretty much our entire service area has been the victim of non-stop rains and long-lasting flooding this spring. This weather is taking a toll on buildings, roads, fields, and people. The rain has to come to an end, eventually, right?
The Weather’s Impact on Concrete Slabs
You can do everything right when it comes to downspouts, gutters, and other drainage solutions, but when it rains this much for this long, every system can be overwhelmed. If you already had a water issue, the problem can be even greater.
When the ground becomes as wet and saturated as it has this spring, bad things can happen to your home or business. Basement walls can begin to bow or lean, due to pressure from the water-logged soil. Foundations can shift or sink as the soil weakens from all the water. Driveways, sidewalks, and patios can sink or buckle. These problems can range from being annoying to being a danger to peoples’ safety.
Small cracks may not seem like a big deal, but water doesn’t take much to be able to enter your home or business. In addition, a crack may be small on the side you can see, but the other side may be much bigger.
You may not have a problem right now with sinking or settling slabs but when the soil dries out, you might. The soil expands when it is saturated, then when it dries out, it will shrink, possibly removing the support your concrete surface needs.
Slabs can sink, not allowing water to drain correctly or causing tripping hazards. Voids can open under the concrete, causing the soil to wash away even more, creating dangerous situations.
If you suspect that your concrete is being damaged by rain problems, you don’t want to wait. The damage won’t heal itself and the needed repairs will only take more time and money the longer they go undone.
Polyjacking Solutions Work the Best
Fortunately, you have options available to help restore your concrete’s stability and strength. Some options are better than others, so make sure you take the time to choose the one that will provide you with the best benefits.
We believe that polyjacking is the answer for many types of concrete problems. In this method, polyurethane foam is injected beneath the slab. The foam expands, lifting the concrete to within 1/10th of an inch of the desired height. In addition, the foam is water-resistant, so it won’t wash away like the slurry used in mudjacking. The foam hardens and seals the bottom of the concrete, preventing any cracks from allowing water to seep through and filling any voids below the surface. The expanding foam also compacts any loose soil that may be under the slab.
The foam is lightweight (about 3-5 pounds/cubic foot) compared with mudjacking grout (over 100 pounds/cubic foot). The added weight of mudjacking can cause problems down the road as it combines with the weight of the concrete and whatever traffic is using the surface.
The installation process is another benefit that polyjacking has over other methods. In mudjacking, the holes that are drilled into your concrete are 3 inches or bigger in diameter, whereas the polyjacking holes are only 5/8″ wide. No heavy equipment is needed, so your lawn won’t be driven over with tractors and trucks and the area won’t be full of construction pieces. The foam takes about 15 minutes to cure, so as soon as that’s done, you can use the slab. Other methods may require days or weeks to allow you to use the concrete slab.
Don’t let Mother Nature’s temper tantrums damage your concrete slabs. Let us keep your driveways, patios, sidewalks, and more level and strong. Contact us to learn more about how polyjacking can help you and your home or business.
We won’t lie, the winter is usually a slow time for us. People get busy with family activities, dealing with the weather, and frankly, just hibernating. Also, people may not know that they can polyjack their concrete during the winter months. We understand, there are a lot of winter days where outdoor activities are the furthest from our minds.
There are several reasons why you may want or need to have your concrete leveled. If the problem is dangerous or damaging your house or business, or you’re looking to sell the property, you may not be able to wait until the weather warms up. The reasons may override your schedule.
Is It Too Cold to Polyjack?
The temperature does factor into the success of your concrete lifting, but you may be surprised by other factors that come into play during the winter. Extreme cold can cause the ground to freeze solid making the concrete lifting difficult or downright impossible. The frozen earth can hold onto the concrete, sticking to the bottom of the slab and possibly causing the cement to break before it can even be raised.
It is almost impossible to perform mudjacking during the winter. The mud slurry that is used to raise the concrete can freeze inside the pump or hoses, making it impossible to move the slurry. Water is used to remove excess slurry, which isn’t an option in below-freezing conditions. Due to the mess and danger of mudjacking, most projects are done outside, so the winter prevents that from being a common option for concrete lifting during that time.
Polyjacking can be limited by extremely cold temperatures, however, the limits are much less than those that impact mudjacking. The polyurethane foam that is used for polyjacking is created by combining two liquids. These liquids are heated in a temperature-controlled environment, then injected through a heated hose. The foam is largely unaffected by outdoor temperatures, so it can be used effectively in cold weather.
If you need concrete lifting and aren’t sure if it’s too cold out, just give us a call and ask! As you know, the weather could be below zero one day, then in the 50s the next. We’ll be able to let you know when we’ll be able to safely lift your concrete. We don’t want to cause more problems than you already have, so we’ll be upfront and honest with you in regards to the best time for your particular project.
Contact us today to learn more about polyjacking your concrete at any time of the year. We look forward to providing you with a safe and strong concrete surface.
Concrete surfaces such as basement floors, driveways, patios, and more are all impacted by soil movement and weather that can cause damage and weakness. The slabs can also sink if the surrounding soil no longer supports it. These problems won’t repair themselves, the longer you wait to fix the problem, the bigger the issue and damage will be.
If your foundation sinks, it can cause damage throughout your business or home. Walls and floors can crack or lean, floors can slope or warp, and doors and windows may not stay open or closed. The worst-case scenario is that the foundation collapses and brings your structure down with it. If the soil that supports the foundation or concrete becomes oversaturated, too dry, or isn’t compressed correctly, it will no longer give the slab the stability that it needs.
Luckily, there are solutions to keep your concrete and foundation stable and level.
Polyjacking and Mudjacking Solutions
Sinking concrete usually occurs because a void has formed under the slab. Unless the void is filled and the soil stabilized, the concrete will continue to sink. If left unaddressed, the repair may have to be done with underpinning, greatly raising the time, money, and effort needed to fix the problem.
When it comes to the task of filling in voids, mudjacking and polyjacking both are up for the job. Mudjacking uses a mud slurry to fill the void and lift the concrete, whereas polyjacking utilizes a polyurethane foam to fill the void. In both methods, holes are drilled into the concrete above the void and then the slurry or foam is injected, filling the cavities below the concrete. The slab will be lifted to a level plane and the drilled holes will be filled. Mudjacking uses bigger holes than polyjacking (3-4″ compared to 3/4 to 1″).
Both forms of concrete lifting can be used for a variety of concrete surfaces including foundations, sidewalks, warehouse floors, tennis courts, and swimming pools.
Pros and Cons of Both Concrete Lifting Solutions
Though both methods are similar at face value, there are some pretty big differences between mudjacking and polyjacking.
- Comparatively inexpensive
- Naturally occurring materials
- Doesn’t fill the void completely
- Short-term results that have to be repeated every couple of years
- Slurry material is 30-50x heavier than polyurethane
- Slurry material is prone to erosion
- Large holes must be made in the concrete
- The slurry can take days to set and harden
- Long-lasting results
- Lightweight materials
- Polyurethane foam density fills the voids
- Soil mixes with the foam to bond securely and gains strength
- Small injection hole
- Doesn’t wash away
- Able to adjust leveling to within 1/100″
- Polyurethane foam sets within 15 minutes
- Costs more than mudjacking
- Not as well known
Polyjacking.com Swears by Polyurethane Injections
We want to offer the best repair methods to our clients. We have been using polyjacking for so long that we coined the name! In the past, only commercial properties and municipal projects used polyjacking, but we have learned over the years that it is a great solution for residential repairs, too. We’re dedicated to providing the residential and commercial owners an affordable and lasting repair for sinking and damaged concrete slabs and foundations.
We know that you don’t have the time to have your place torn up with heavy equipment and then having to wait for the slab to be ready to be used. Polyjacking uses only one truck for the foam and the slab is ready to use within 15 minutes of completing the injection. We won’t tear up your landscaping or disrupt your business while getting your slab repaired. You can rest easy knowing that your concrete will be stable when it comes to sinking, heaving, or cracking.
Contact the concrete lifting experts at Polyjacking.com to learn more about how our polyurethane foam can lift your concrete and provide you with a stable and strong surface, protecting your property, equipment, and people.
Most of the service area covered by Polyjacking.com has had a lot more rain this summer than usual. In addition to ruining a lot of outdoor plans, the rainfall may have wreaked havoc with the foundation of your home or business.
If your building wasn’t flooded, why should you be worried about the amount of rain in your area?
Water and Soil
When there is a lot of rain, it has to go somewhere. Some of it may run into storm sewers or creeks or other planned run-off areas. Most of the time, though, it goes into the soil until the ground is saturated. The water-soaked soil can cause problems for concrete slabs and foundations.
When the soil is oversaturated, it can exert a tremendous amount of pressure on its surroundings. This is called hydrostatic pressure and it can damage a foundation wall completely. If the foundation of your building is under the strain of hydrostatic pressure, the walls may begin to bow or lean. Walls and slab floors may show cracking as the soil and water pushes against the rigid concrete.
Water will take the path of least resistance and can erode the soil around it. When the soil gets washed away, it removes the support from around the foundation or slab. Voids can open underneath the concrete, allowing the slab to sink or crack.
If the rain falls too fast or the ground is saturated, the water can flood buildings or enter cracks no bigger than a hair. Water can weaken concrete and put your slab or building in danger.
Water Damage Prevention
There are steps you can take to help keep your home or business dry. You can make sure that your gutters and downspouts are clear and emptying at least 10 feet from the foundation. In addition, companies like Pro Foundation Technology, Inc. can provide you with waterproofing techniques to keep the water out of your building.
Some options that can help with surface drainage include drywells, gutters, and French drains. It is important that you have good surface drainage or the water you keep out of your building will just come right back, trying to enter your foundation.
To properly install exterior drainage, the outside of the building will have to be excavated, exposing the footing. Most reputable contractors will roll on or spray a polymer waterproofing product. A drain pipe system should be installed for continuous drainage. The drain can empty to a sump pump system or to daylight.
One of the most important parts of a waterproofing system is the implementation of a sealed interior drain tile system. Since the system is underneath the foundation, it is important that it is installed correctly from the start. Cracks in the walls and floor will need to be sealed with epoxy or polyurethane.
Sump Pump System
A sump pump system can move water out of the building, keeping water from flooding the structure. The system consists of a sump pump, a sump pit, and we recommend a battery back-up sump pump.
My Slab is Damaged, Now What?
So after all of the rain this summer you may be facing a damaged concrete slab or foundation, so what can you do? Before you call in someone to have the slab torn up, contact the experts at Polyjacking.com. We will come out and look at your property and determine if polyjacking is the solution you need. Polyjacking a slab is a LOT cheaper than destroying it and replacing the concrete.
The process is relatively easy and doesn’t require heavy machinery. Small holes are drilled in the concrete and polyurethane foam is injected under the slab. The foam expands, lifting the concrete and filling in any voids and cracks underneath the slab. The foam is water-resistant, so it won’t erode and the foam compacts the soil, making it more stable. By the time the equipment is removed and the area is cleaned up, you can use the slab. Curing time is about 15 minutes, so you won’t have to wait long to get back to business.
Contact the pros at Polyjacking.com to learn more about how using polyurethane foam to repair your concrete is the most cost-effective and long-lasting solution available.
Not every concrete repair involves a call to your favorite contractor. Some concrete slab repairs can be done by yourself in an afternoon.
Identify the Damage
The most important part of taking care of concrete damage is determining what the problem is. There are three common types of concrete damage that you can probably take care of yourself.
Plastic-Shrinkage Cracks: These cracks can be found evenly distributed across the slab and usually run mid-depth into the concrete. They are short in comparison with other types of cracks. These cracks usually develop during the curing stage as the concrete surface dries quicker than the concrete underneath it.
Scaling: A concrete surface may be covered with small pockmarks. These blemishes can expose the aggregate underneath the surface.
Hairline Cracks: As their name implies, these cracks are very thin but don’t let that deceive you, the cracks can be very deep. These cracks can occur when the slab settles during curing. These cracks can get bigger, so you need to keep an eye on them.
When you are able to determine the type of damage your concrete has, you’ll know what you need to make the repair.
Get the Right Tools
Always follow the directions on the package for whatever product you use, but there are a few things that are pretty common when it comes to concrete repair. You’ll need a quality nylon brush to wipe area free of dust and debris. Don’t skimp on the brush, as this first step is also one of the most important ones to do correctly and thoroughly. You may also need a good hammer and chisel to remove any damaged or loose concrete around the area in question.
We recommend pressure washing the area before applying any products to the concrete, but you need to make sure that the concrete is completely dry. Even a little moisture can make a problem even worse than it was.
Depending on the type of product, you may need a putty knife or trowel to shape and smooth the material used to repair the concrete damage. In other instances, the product may be dispensed from a squeeze bottle or other method, so no additional tools may be required.
Choose the Right Product
There are a variety of products on the market and you really need to do your research to make sure that you have not only a quality product but the right one for your particular problem. If the cracks in your slab are between 1/4″ to 1/2″ deep, then you should use a trusted concrete crack filler. Make sure your product is able to be used either indoors or outdoors, depending on the location of the slab. The crack filler should protect the crack from water penetration, regardless of the location of the concrete. Water can be inside or outside.
If the crack is bigger than 1/2″ than you will probably want a cement patcher. This takes a little more time to set, but it is stronger and able to withstand more pressure than a filler.
If the repair isn’t done correctly or thoroughly, it may lead to larger problems. It doesn’t take a large crack for water to enter the slab and cause problems. Rain, snow, water from washing a car, or other sources can enter the crack and cause erosion. The water can also expand and contract with changes in temperature, making a crack even worse than it was. If you aren’t sure that you can do the job completely, you may be better calling on a professional like Polyjacking.com to make sure that the crack is taken care, in addition to whatever is causing the crack.
With all of the activity that takes place in warehouses, manufacturing plants, and other industrial buildings, it is easy to let the concrete floor to become damaged or worn out. There always seems to be something else that needs to be repaired or replaced, but if you let your commercial concrete floor problems grow, the time and money it will take to repair them will just get larger and larger.
Signs of Industrial Floor Repair Needs
There are some things that you can look for to decide if you need repairs done on the floor of your industrial facility.
Floor Cracks: Every concrete floor will develop cracks over the years and, in many cases, the cracks are harmless. There are some cracks that are structural in nature and those are the kinds that you need to pay attention to.
How can you tell if a crack in your concrete floor is cosmetic or structural? If the crack is wider than the thickness of a credit card or runs the length of the floor, there may be cause for concern. Also, if the crack is between two levels of the surface or the slab is tilted, you may have a concrete problem. There are some causes of these kinds of cracks. Either the slab has settled unevenly, or there is a void underneath the concrete. Regardless of the reason, it is important that you have a trusted professional repair contractor to inspect the concrete slab.
If the damage is caught early enough, a process like polyjacking or other slab lifting method could be used successfully. The concrete slab can be stabilized and the cracks filled, leaving you with a floor that is like new, preventing further damage from occurring.
Slab Deterioration: Because the slab is located inside a commercial facility, it is more likely to be subjected to heavy wear and tear. Forklifts and other machinery can wear off the top layer of the slab which is usually the hardest portion of the concrete. The softer part of the concrete will deteriorate quicker, causing more problems for the slab and for your employees to do their jobs.
It is important that the damage is stopped before it can become dangerous. The surface can be ground to a smooth surface and a penetrating sealer can be applied to harden the concrete. This new surface will allow your equipment to run along the surface safely.
Damaged Joints: If the joints in your slab were not filled with a flexible joint sealer, they will begin to chip and fail. The chips can begin to get big enough to jostle the forklift, the operator, and the load that they are carrying. This can cause injuries to the operator and other people around and also can damage products and equipment.
An experienced contractor should inspect the joints and determine the next course of action. This may involve rebuilding the joints and lifting the slabs to evenly match each other.
Industrial Floor Lifting
There are several methods of repairing a commercial concrete slab, but you will probably need something that won’t interfere too much with the daily operation of your facility. Some people think that you have to completely tear up the slab and start from scratch. Although this may be the best solution in some cases, many times you only need to lift the slab.
If you are looking for the most efficient, cost-effective, and environmentally sound method of slab repair, we strongly suggest using polyjacking. Polyurethane concrete lifting has been used extensively for over 30 years in all types of heavy-duty, real-world conditions and locations. The polyurethane foam can lift the slab to within a tenth of an inch of the desired height and will remain there. The structural integrity of the slab is maintained, through the use of smaller holes than a process like mudjacking would use.
The foam will seal the underside of the slab and fill in any voids located under the concrete. The foam is water-resistant, so it won’t wash away from erosion like the mud slurry in mudjacking.
You will be able to use the slab about 15 minutes after the foam is injected, unlike other methods that may take multiple days to set. By the time we have cleaned up and put the equipment away, you’ll be able to drive your equipment on the repaired slab.
Industrial Polyjacking in Kansas City and St. Louis
If you are looking for a reputable and reliable polyjacking contractor in Kansas or Missouri, contact the professionals at Polyjacking.com. We have experience leveling and undersealing concrete of all types: bridges, highways, runways, sidewalks, garage floors, warehouse floors, loading docks, and more.
Get in touch with us for a free quote and we’ll make sure that your industrial concrete floor is safe, stable, and secure.
When the ground under a concrete slab erodes away, it can cause a lot of problems. Homes with basements usually have the most problems, but voids can impact driveways, patios, sidewalks, and more. The erosion causes air pockets or voids to develop under the concrete slab, taking support away from the surface.
Causes of Voids
There are several different reasons that a void can occur beneath your concrete. Most of the time, it isn’t due to erosion, but other factors. Some issues are fast, others can take years to cause problems.
Soil consolidation occurs over time. This occurs when loose soil under the concrete consolidates or sifts down. If the soil is not properly prepared by being tamped down, this can occur. When the soil consolidates, a void can form over time.
Settlement is a natural occurrence that happens over time. It can occur with new construction or with a property that is a hundred years old. It all depends on the type of soil and weather patterns. Heavy rains or flooding can cause the soil to settle faster than normal. If the settling soil is in a large enough area, it can allow erosion to occur. Settling soil sets the table for a problem, erosion just makes it worse.
If water doesn’t drain correctly or there is new landscaping or other additions to the property, erosion can start after years with no problems. The water will run freely, washing out the soil and creating a void under the concrete. The bigger the void, the more damage that can occur.
Solutions for Voids Under Your Concrete
You don’t have to tear up your concrete to fix the problem of having a void. The best solution is polyjacking. High-Density polyurethane foam is injected through small holes into the voids. The foam expands, filling the void and sealing any cracks on the underside of the slab. The foam will not wash away and the slab is usable shortly after the foam is injected. Mudjacking is an alternative, but the sand-based grout can be washed away or not completely fill the void and you’re back to square one.
You’ll still need to take care of drainage problems, as they will continue to cause problems for your home or business. Make sure that water is draining correctly and away from the foundation or concrete area. The polyurethane foam won’t wash away, but the surrounding soil can erode. Let a company like Pro Foundation Technology assist you with waterproofing services.
Protect your property from foundation damage, trip and fall hazards, and sunken concrete by making sure the water is draining from your property. If you already have problems, let an expert like those at Polyjacking.com help you restore your concrete slab to the necessary height.
Ice and cracks are not a good combination. If you have cracks in your concrete, they can let water in and if that water freezes, the crack will grow bigger. As we all know, a Kansas City winter can be a nightmare!
Ice Can Be Destructive to Concrete
When water turns to ice, it can expand almost 10% more in volume than its liquid amount. This is a small number in the big scheme of things, but even a small change in a crack can cause a big problem. The pressure behind expanding ice is very strong. According to chemical engineer Geoffrey Widdison, freezing water can theoretically exert around 30,000 psi! That amount of force can easily destroy concrete foundations and slabs. The cracks can spread and grow wider, causing a wide variety of structural problems. The problems can happen when your property experiences its first freeze-thaw cycle, getting worse with every cycle.
As stated earlier, this can impact both foundations or concrete slabs. Once water enters the crack, your home or business could have water in the basement or crawl space or it could enter the foundation walls. Water can also cause concrete shrinkage and other structural damage.
Ice Can Cause Concrete Problems
As much as some of us would like to stop winter from coming, it comes just the same. The winter weather in Kansas City can damage your concrete slab, foundation walls, and any other concrete surface you may have at your home or business. The surface of the concrete can be a victim of “mortar flaking“. This occurs when the top layer of the concrete peels or flakes off.
As we stated above, any previous cracks can get bigger and longer and new cracks may form. Cracked concrete loses a lot of its strength and can lead to foundation failure or trip hazards on concrete slabs.
Yet another problem is something called “popout”. Popout occurs when the water behind or underneath a concrete surface swells, pushing against the concrete. It can cause flaking, crumbling, and cracking. This can occur at any time of the year, but it is more prevalent in the winter months.
Tips For Keeping Your Concrete Safe
The best thing you can do to protect your concrete is to keep water from freezing on it or next to it, but that’s pretty difficult. Make sure that your home or business is ready for the winter weather. Downspouts and gutters should be clear and drain well away from the foundation, at least 10 feet or more. Clear snow and ice from around the foundation; melting snow can run down the foundation walls and cause problems.
Polyjacking.com can help you keep your concrete stable and safe. With Pro Foundation Technology behind us, we can offer waterproofing, concrete lifting, and more. We’ll keep your home or business safe, dry, and comfortable.
Get your Kansas City property ready before the winter really gets nasty, so you won’t have to worry about problems with your concrete and foundation. Contact Polyjacking.com now and let us help you get ready for a visit from Old Man Winter!