9.28.6. Stucco Application

9.28.6. Stucco Application
9.28.6.1. Low Temperature Conditions
  1. The base for stucco shall be maintained above freezing.
  2. Stucco shall be maintained at a temperature of not less than 10°C during application, and for not less than 48 h afterwards.
9.28.6.2. Number of Coats and Total Thickness
  1. Stucco shall be applied with at least 2 base coats and one finish coat, providing a total thickness of not less than 15 mm, measured from the face of the lath or the face of the masonry where no lath is used.
9.28.6.3. First Coat
  1. The first coat shall be not less than 6 mm thick, measured from the face of the lath or masonry, fully embedding the lath.
  2. The surface of the first coat shall be scored to provide a key with the second coat.
9.28.6.4. Second Coat
  1. The second coat shall be not less than 6 mm thick.
  2. The surface of the second coat shall be lightly roughened to provide a key with the finish coat if the finish coat is other than stone dash.
9.28.6.5. Finish Coat
  1. When the finish coat is other than stone dash, the base shall be dampened but not saturated before the finish coat is applied.
  2. The thickness of the finish coat shall be not less than 3 mm.
  3. When a stone dash finish is used, the stone shall be partially embedded in the second coat before the second coat starts to set or stiffen.