Specifications

10/15/91 09220-1
SECTION 09220
PORTLAND CEMENT STUCCO
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Portland cement stucco system.
1.02 REFERENCES
A. ASTM C150-85 - Portland Cement.
B. ASTM C207-79 - Hydrated Lime for Masonry Purposes.
C. ASTM C631-81 - Bonding Compounds for Interior Plastering.
D. ASTM C897-83 - Aggregate for Job-Mixed Portland Cement-Based Plasters.
1.03 SUBMITTALS
A. Submit manufacturer's product specifications and installation instructions.
1.04 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials to the site in sealed containers fully identified with manufacturer's name, brand,
type and grade.
PART 2 PRODUCTS
2.01 MATERIALS
A. Cement: ASTM C150, Type I.
B. Water: Clean, fresh, potable and free of mineral or organic matter which can affect stucco.
C. Aggregate: ASTM C897.
D. Hydrated Lime: ASTM C207, Type S.
E. Bonding Agent: ASTM C631. Thorobond by Thoro System Products or approved equal.
F. Premixed Finishing Coat: Thoro Stucco by Thoro System Products or approved equal.
2.02 STUCCO MIXES
A. Scratch Coat - One part cement, three parts sand, with hydrated lime not more than 1/4 part by
volume. Cement and hydrated lime after being thoroughly mixed dry to uniform color, added to
dry sand and whole thoroughly mixed. Water added to secure proper working consistency.
B. Finish Coat - Mix in accordance with the manufacturer's instructions.
PART 3 EXECUTION
3.01 EXAMINATION
A. Verify that surfaces and site conditions are ready to receive Work.