I had an extremely hard scenario with a sloped snaking walkway, that had a rockery along the side. It needed back filling and support for a previous water erosion problem, without lifting it and disturbing the rockery. Two other companies said it was impossible, but Josh Gray said he had a guy who could do it. William was the master and spent the entire day on this one job, meticulously easing foam into what looked like about 100 strategically placed holes, and far exceeded my expectations for the results. They also filled all of the cracks in the walkway, placing sand and pebbles on top of the sealant to match the exposed aggregate. Outstanding job guys!!!