FLORIDA STUCCO CONTRACTOR LICENSING
EXAM – PRACTICE TEST QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2025/2026 Q&A |
INSTANT DOWNLOAD PDF
1. What is the minimum thickness required for the base coat of a traditional
three-coat stucco system over metal lath?
1/2 inch
The Florida Building Code requires a minimum of 1/2 inch base coat
thickness over lath for durability and strength.
2. In stucco application, what is the primary purpose of a bonding agent?
To improve adhesion between coats
Bonding agents ensure that new stucco adheres properly to existing
surfaces or between different coats.
3. Which ASTM standard applies to Portland Cement-Based Plaster (stucco)?
ASTM C926
, ASTM C926 specifies requirements for application of Portland Cement-
Based Plaster (stucco).
4. What is the main function of control joints in stucco?
To relieve stress and prevent cracking
Control joints allow for movement in the stucco system, reducing cracking
from thermal or structural shifts.
5. What is the minimum thickness for the finish coat in a traditional stucco
system?
1/8 inch
Finish coats are typically thin—about 1/8 inch—to provide texture and
color.
6. Which material is typically used for lath in stucco application?
Galvanized metal
Galvanized metal lath resists corrosion and provides a strong mechanical
bond for stucco.
7. What is the required overlap for metal lath in Florida stucco installations?
1 inch
Florida code requires at least a 1-inch overlap to ensure structural
continuity.
8. The curing time between coats of stucco should be at least:
48 hours
A minimum 48-hour cure time is required between coats for proper
hydration and strength development.
, 9. What is the primary ingredient in stucco that provides binding?
Portland cement
Portland cement is the binder in stucco, giving it strength and durability.
10.When applying stucco over concrete masonry, what preparation step is
usually required?
Applying a dash bond coat
Dash coats improve adhesion when stucco is applied directly over CMU
surfaces.
11.Which ASTM standard governs the specifications for lath?
ASTM C847
ASTM C847 covers specifications for metal lath used in stucco applications.
12.What is the Florida Building Code minimum thickness for stucco applied
directly over masonry?
5/8 inch
Stucco applied directly to masonry must be at least 5/8 inch thick for
structural integrity.
13.What type of joint is used where stucco meets dissimilar materials?
Expansion joint
Expansion joints accommodate differential movement between stucco and
other materials.
14.The scratch coat in stucco should be scored to a depth of:
1/8 inch
Scoring creates a mechanical bond for the brown coat.
EXAM – PRACTICE TEST QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2025/2026 Q&A |
INSTANT DOWNLOAD PDF
1. What is the minimum thickness required for the base coat of a traditional
three-coat stucco system over metal lath?
1/2 inch
The Florida Building Code requires a minimum of 1/2 inch base coat
thickness over lath for durability and strength.
2. In stucco application, what is the primary purpose of a bonding agent?
To improve adhesion between coats
Bonding agents ensure that new stucco adheres properly to existing
surfaces or between different coats.
3. Which ASTM standard applies to Portland Cement-Based Plaster (stucco)?
ASTM C926
, ASTM C926 specifies requirements for application of Portland Cement-
Based Plaster (stucco).
4. What is the main function of control joints in stucco?
To relieve stress and prevent cracking
Control joints allow for movement in the stucco system, reducing cracking
from thermal or structural shifts.
5. What is the minimum thickness for the finish coat in a traditional stucco
system?
1/8 inch
Finish coats are typically thin—about 1/8 inch—to provide texture and
color.
6. Which material is typically used for lath in stucco application?
Galvanized metal
Galvanized metal lath resists corrosion and provides a strong mechanical
bond for stucco.
7. What is the required overlap for metal lath in Florida stucco installations?
1 inch
Florida code requires at least a 1-inch overlap to ensure structural
continuity.
8. The curing time between coats of stucco should be at least:
48 hours
A minimum 48-hour cure time is required between coats for proper
hydration and strength development.
, 9. What is the primary ingredient in stucco that provides binding?
Portland cement
Portland cement is the binder in stucco, giving it strength and durability.
10.When applying stucco over concrete masonry, what preparation step is
usually required?
Applying a dash bond coat
Dash coats improve adhesion when stucco is applied directly over CMU
surfaces.
11.Which ASTM standard governs the specifications for lath?
ASTM C847
ASTM C847 covers specifications for metal lath used in stucco applications.
12.What is the Florida Building Code minimum thickness for stucco applied
directly over masonry?
5/8 inch
Stucco applied directly to masonry must be at least 5/8 inch thick for
structural integrity.
13.What type of joint is used where stucco meets dissimilar materials?
Expansion joint
Expansion joints accommodate differential movement between stucco and
other materials.
14.The scratch coat in stucco should be scored to a depth of:
1/8 inch
Scoring creates a mechanical bond for the brown coat.
