Using foam for leveling concrete has numerous advantages over other methods. The holes used for foam jacking are usually only 5/8″ in diameter as opposed to the larger holes used in conventional mud or concrete jacking. Foam will not wash out from under lifted concrete as it can in some other methods. The foam also weighs far less than other alternatives, which helps tremendously with softer substrates. The other major advantage to someone that is already a mobile applicator of foam and/or polyurea is that the equipment is readily adaptable to concrete lifting. The same reactor, hose and A-side chemical is used. A different “B” foam component specially formulated for lifting is usually used and some different attachments for the holes and gun ar required.