This system may be readily applied over a variety of masonry backgrounds including: new or old brick, concrete blocks, or other vertical concrete surfaces. The texture of the coat results from the chosen bagging mix. Masons Adobe is smoother and flatter while Masons 1MM sponge will have a coarser more sandy texture. The bagged brick finish is achieved by applying a coat of the plaster mix with the use of a sponge, hessian bag material or a brush or broom. Appearance will vary depending on the particular application method that is used to spread the mix and the hand movements of the plasterer. Special Notes Due to the many variables in this system we recommend the plasterer applies a test-patch for sign-off by the client.