The ideal polyurethane foam for filling voids under a driveway, AP Lift 430 works in a variety of wet, dry, or harsh conditions, can support up to 7,200 lbs per square foot, and will cure to 90% full strength in 15 minutes. This two-component, high-strength, high-density, hydro-insensitive structural polymer weighs 2.75 – 3.25 pounds per cubic foot. When injected, polyurethane will conform to the shape of the void more accurately than other materials such as cement grout. And, unlike cement, it won't sink over time.

Watch the video below for a real-time example of polyurethane void fill with AP Lift 430. The structural stability of this driveway is under threat due to a very wide void ranging from one to two feet deep. Since the supporting soil on one side of the slab has entirely eroded away, it was possible to capture this process very clearly on video.

Watch the process closely and then call 404-618-0438 to be connected to your technical support representative for any follow-up questions. Alchemy-Spetec offers the most experienced tech support team in the industry. Contact us today for assistance on your next job!

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