Landscaping and Hardscaping Retaining Walls November 26, 2016January 16, 2018 Marty Salcedo backfill, block, CMU, compact soil, efflorescence, flooding, hill, hillside, retaining wall, wall Retaining walls have a specific purpose on a property and through all the various forms there is one overall concept… This content is for Yearly Subscription, Affiliate Membership Level (Code Required), and Gifted Membership members only.Log In Register