Pavers Above Grade . After getting to the point where the edging won't fall down and collapse, i would get a compactor and. There are many different kinds of materials you can use to fill the joints of large concrete pavers. 29 Inspiring Paver Patio Ideas for 2021 Images for Walkways, Decks from www.owntheyard.com The base preparation step is repeated for both the retaining wall and patio installation as a two part process. Above grade means any construction works above ground level. Their plan is to backfill all around with topsoil and grade down to the yard.