Sidewalk slabs can sink and settle over time due to various factors. For instance, poor drainage or leaking pipes can cause soil erosion and instability. Additionally, construction crews may poorly compact soil and backfill, leading to settling. Furthermore, buried organic material can biologically decay, also contributing to the problem. Consequently, these issues ultimately result in uneven, hazardous walking surfaces that endanger pedestrians. Traditionally, fixing sunken sidewalks required demolishing and re-pouring the concrete - a costly, time-consuming process.
However, polyurethane concrete leveling contractors offer a much simpler alternative. The process involves several steps. First, contractors drill small holes in the sunken slabs. Next, they inject expandable polyurethane foam underneath. As the foam expands, it raises and levels the slabs. Finally, they patch the drill holes for a seamless appearance.
The injected foam fills any voids, compacts loose soil, and provides a stable base to support the concrete. Moreover, contractors can achieve precise lifting for a perfectly level slab. The foam reaches 90% strength within 15 minutes, allowing contractors to put sidewalks back into service on the same day in most cases.
Compared to tearing out and replacing concrete, polyurethane slab leveling offers numerous advantages. Firstly, it is faster, with contractors completing many jobs in a day or two. Secondly, it is more affordable, providing significant savings versus replacement. Thirdly, it is less disruptive, requiring no heavy equipment or excavation. Additionally, the cured foam is stronger than bedrock, ensuring a longer-lasting solution. Lastly, Alchatek is NSF-certified to comply with strict environmental standards.
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