Concrete lifting uses a special foam to achieve the desired goal of stabilizing sunken and broken slabs, giving a strong base to surfaces that have become an issue, both regarding safety and aesthetics. If you are a skillful handyman that manages all your household repairs and are determined to fix your unstable driveway, patio or another concrete surface, you will need a polyurethane foam that will do the trick. Before attempting to do anything in construction, it is essential to understand the physical aspects of materials used and the physics of the method itself to be able to combine them successfully. Here are the vital traits of polyurethane foam you need to know!
How long does it take?
One of the main features of foam is that it expands, allowing construction workers and eager repair people to harness that characteristic to their advantage. However, the magnitude of the expansions is not the only feature we need to keep in mind. One of them is the reaction time or how long does it take for your selected foam to start expanding. That is important because you will need a quickly expanding foam to avoid the material percolating under the concrete in places it is not required, causing additional damage by lifting parts that are not problematic.
Does it stick?
The purpose of the polyurethane foam is to raise the concrete without actually sticking to it. If the foam does not have that feature, it can cause problems adhering to the base and sealing the slab you are trying to lift in the wrong position. The foam you use should create a denser outer layer that doesn’t stick to the surrounding surfaces but serves as a support.
How long can you manipulate it?
When raising a concrete slab, you start injecting foam on one side and then switch to the other. To execute the whole process without any problems, the foam you use needs to stay pliable for about 15 minutes before setting completely.
If you are based in the state of Colorado, and you want to learn more about the most effective solutions and techniques of concrete repair, contact us at Eco Level, schedule a free consultation, and we will answer all your questions!