Product
Prestige Stone custom architectural masonry units are to be manufactured  by Johnson Concrete Company, Raeford Division, Raeford, North Carolina.  Architectural Concrete Masonry Units shall be of the same color as approved by the architect.

Architectural Masonry Units shall conform to ASTM C 90.  The minimum net area shall be at least 2700 psi for the individual unit.  The maximum absorption shall not exceed 7.5%.  Architectural masonry units shall be in the normal weight classification and shall not be less than 125 lbs./pcf.  All units shall be tested in accordance with ASTM C 140.

Architectural Masonry Units shall be manufactured  with a chamfered edge to insure a straight break on the face shell of the masonry unit.  The architectural masonry unit shall be manufactured with an integral water repellent to minimize staining and efflorescence.  The manufacturing facility shall meet all requirements and criteria set forth by W.R. Grace and be certified as a DRY BLOCK System Producer."

Architectural Masonry Units shall be manufactured  in one continuous run to achieve color consistency and compatible textures.  The manufacturer shall provide necessary shapes, required by drawing to satisfy job conditions.

Shipping and Handling
Architectural Masonry Units are to be shipped on a wooden pallet and shall be delivered to job site covered with a clear 4-mil plastic bag with shrink wrap applied to keep units covered from exposure to weather conditions.  The purchasing contractor shall be responsible for reapplying plastic cover to any units that have been uncovered during the course of the workday.

Sample Panel
A sample panel shall be constructed at the job site showing the range of color and texture, color of mortar  and workmanship.  Custom Masonry work shall not proceed until approval from the architect has been received.

Cleaning 
Architectural Masonry Units should be cleaned with water of detergent masonry cleaner (Sure Klean Custom Masonry Cleaner).  Manufacturer will not be held responsible for discoloration or damage resulting from the use of high pressure spray or cleaning solutions containing acid.