Sinkholes affect parts of Southern California–especially Los Angeles county–but what causes them? Most of the time it comes down to water, erosion, and the type of bedrock that is underneath the top layer of soil. Rainfall and other sources of water erode away soft material rock such as limestone, gypsum, salt, and dolomite to leave behind voids underneath the top layer of soil. Once that top layer reaches its breaking point, a sinkhole forms. Sinkholes come in a variety of sizes, from a few feet across to large pond or lake sizes in extreme cases. It is likely you have seen videos or pictures of cars or even whole homes being swallowed up by sinkholes. It can be quite terrifying since they can cause a large amount of damage with little to no warning. Luckily, we here at Dalinghaus Construction have a solution for you.
Repairing Sinkholes with Polyurethane
You may have heard of concrete slabs being repaired and lifted with polyurethane foam. Fortunately, polyurethane foam has many, many more uses. It is an incredibly versatile solution to many issues. We also use polyurethane foam to fix sinkholes. Polyurethane foam will not erode like soft material rock. It is also a cost effective solution. Polyurethane expands many times it’s original size, so less materials are needed to perform repairs. It’s also waterproof and strong so you won’t have to worry about that void again.
In order to fix sinkholes with polyurethane, first we need to locate the void that was created underneath the top layer of soil if it isn’t already apparent. Once we locate it, we can begin to inject polyurethane to fill the void. This creates support for the top layer of soil so that the sinkhole no longer causes problems. You won’t have to worry about collapses any more and you can have peace of mind that your home and your possessions are safe. If you suspect you have a sinkhole–look for soft spots in your yard–make sure to give us a call. Don’t let sinkholes damage your property!