Job Conditions - Air and substrate temperature for application of Ready Cemplaster Stucco  must be 40°F (5°C) or higher and must remain 40°F (5°C) or higher for a minimum of 24 hours.  Provide temporary protection to  protect the wall system from damage until permanent flashings, caps and sealants are installed. Store materials in a dry place, within prescribed temperature limits and out of direct sunlight.  Working and drying times are based upon normal room temperature conditions and will vary with temperature and humidity.

Preparation - The substrate must be approved by Master Wall Inc., clean, dry, structurally sound and free of efflorescence, oil, grease, form release agents and curing compounds or anything that would affect bond.  Painted surfaces are not acceptable and must be removed or metal lath applied.  All sheathed applications must receive a minimum of 2-layers code-approved asphalt felt or equivalent.

Prepare smooth or non-absorbent solid substrates by one of the following methods or a combination; Sandblasting, chipping or acid etching, A dash-bond coat applied forcefully, bonding compounds such as Master Wall Stucco Ad Liquid or Primer 57, Furred or self-furring metal plaster bases as per ASTM C1063.

Mixing - Each bag of Ready Cemplaster Stucco is mixed with clean, potable water.  Using a clean mixer, first add 1/2 to 2/3 the water required, 1-bag Ready Cemplaster Stucco, then the rest of the water to achieve the desired workability.  Mix materials for 3 to 5 minutes after all materials are in the mixer.  Total water content can vary between 1 to 1.5 gallons (3.8-5.7L).  Stucco Ad-Liquid may also be used instead of an equal amount of water.  See system data sheet for specific  levels required for increased warranties.

Tempering-The mixed stucco can be re-tempered one time within 1 hour.  Material older than 1-1/2 hours should be discarded.