InterNACHI Certified Stucco/EIFS Inspector Feed

Question

Which of the following is the BEST description of a traditional three-coat stucco system?

System Types

Question · Easy

Question

What is the PRIMARY defining feature that separates a barrier (face-sealed) EIFS from a drainage EIFS?

System Types

Question · Easy

Question

An inspector observes a 1/2 in thick stucco-like coat directly over rigid foam with no scratch, brown, or finish layering. What system is MOST likely present?

System Types

Question · Medium

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Question

Which International Building Code section addresses EIFS and effectively requires drainage EIFS on most Type V residential construction?

System Types

Question · Hard

Question

What is the typical nominal total thickness of a traditional three-coat stucco system over a wood-framed wall?

System Types

Question · Easy

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On a home built in the late 1980s with synthetic stucco terminating tight to the deck ledger with no visible weep, the inspector should suspect:

System Types

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Question

Which of the following BEST describes 'EIFS with EWRS'?

System Types

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Question

Which agency is the recognized North American trade association that publishes EIFS standards and the 'Doing It Right' training?

System Types

Question · Easy

Question

An EIFS labeled 'Class PB' refers to:

System Types

Question · Hard

Question

A clear visual cue at a wall base that suggests drainage EIFS (rather than barrier EIFS) is:

System Types

Question · Medium

Question

Which EIFS sub-type became dominant in U.S. residential construction starting in the mid-1990s in response to widespread moisture failures?

System Types

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Question

A wall-cladding cross-section shows, from outside-in: textured acrylic finish, alkali-resistant mesh embedded in thin base coat, 2 in EPS, ribbon adhesive, asphalt-impregnated WRB, OSB sheathing. This is:

System Types

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Question

Which is the most accurate statement about 'synthetic stucco' as a homeowner term?

System Types

Question · Easy

Question

Which BEST describes 'hard-coat stucco'?

System Types

Question · Easy

Question

What is one engineering rationale for using drainage EIFS instead of barrier EIFS on wood-framed residential construction?

System Types

Question · Medium

Question

An inspector sees clearly different cladding types meeting at a vertical line on the same wall: synthetic stucco on the left and three-coat Portland cement stucco on the right. What is the MOST important detail to evaluate at this transition?

System Types

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Question

Which EIFS component provides the thermal insulation in a Class PB EIFS?

Eifs Components

Question · Easy

Question

ASTM E2485 is the standard specification for:

Eifs Components

Question · Hard

Question

What is the typical thickness of the EIFS base coat in a standard Class PB EIFS?

Eifs Components

Question · Medium

Question

Why must EIFS base coats use ALKALI-RESISTANT fiberglass mesh?

Eifs Components

Question · Medium

Question

An EIFS finish coat is BEST described as:

Eifs Components

Question · Easy

Question

Which configuration is the MOST common method of forming a drainage plane in residential drainage EIFS?

Eifs Components

Question · Medium

Question

Where in the EIFS assembly is the alkali-resistant fiberglass mesh embedded?

Eifs Components

Question · Easy

Question

An EIFS detail showing TWO layers of reinforcing mesh in the base coat at a particular area indicates:

Eifs Components

Question · Medium

Question

What is the purpose of a starter track at the base of a drainage EIFS?

Eifs Components

Question · Easy

Question

Which property of EPS used in EIFS is MOST relevant to keeping the foam dimensionally stable behind the lamina?

Eifs Components

Question · Hard

Question

An inspector sees a finish coat that is checkered with hairline shrinkage cracks but the base coat below appears intact when sounded. What is the MOST likely interpretation?

Eifs Components

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Question

Which of the following is NOT a standard EIFS component?

Eifs Components

Question · Easy

Question

What is the function of a 'back-wrap' detail at EIFS terminations?

Eifs Components

Question · Hard

Question

An inspector sees raw EPS exposed at the bottom edge of an EIFS wall (no back-wrap, no starter track lip). The MOST appropriate report finding is:

Eifs Components

Question · Medium

Question

In a traditional three-coat Portland cement stucco system, which coat is the FIRST applied directly to the lath?

Stucco Components

Question · Easy

Question

Which coat in three-coat stucco is typically the THICKEST and serves as the leveling coat?

Stucco Components

Question · Easy

Question

Per code, what is the minimum vertical attachment flange of a stucco weep screed?

Stucco Components

Question · Medium

Question

Per IRC R703.7.2.1, a stucco weep screed at the foundation plate line must be installed at least:

Stucco Components

Question · Easy

Question

Two layers of Grade D paper behind metal lath are specified in many regions because:

Stucco Components

Question · Medium

Question

ASTM C1063 is the standard MOST directly applicable to which aspect of stucco installation?

Stucco Components

Question · Hard

Question

Per ASTM C1063, what is the MAXIMUM panel area between control joints in a stucco wall?

Stucco Components

Question · Medium

Question

A continuous run of stucco 30 feet long with no intermediate control joint is observed. What does the inspector report?

Stucco Components

Question · Medium

Question

Per ASTM C1063, the MAXIMUM allowed length-to-width ratio of any stucco panel between control joints is:

Stucco Components

Question · Hard

Question

Per typical lath specifications, lath fasteners along framing members should be spaced no more than:

Stucco Components

Question · Hard

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An inspector observes that the stucco weep screed sits flush with a concrete patio so that the screed cannot weep. What is the appropriate finding?

Stucco Components

Question · Medium

Question

What is the typical thickness of the finish coat in a three-coat stucco system?

Stucco Components

Question · Easy

Question

An inspector observes severely rusted, brown-stained metal lath visible at a damaged stucco area. The MOST likely cause is:

Stucco Components

Question · Medium

Question

Which is a TRUE statement about expansion joints in long stucco runs?

Stucco Components

Question · Medium

Question

Where is kickout (diverter) flashing required?

Moisture Intrusion

Question · Easy

Question

Why is missing kickout flashing especially damaging on stucco or EIFS walls?

Moisture Intrusion

Question · Medium

Question

Which is the BEST practice for terminating EIFS where it meets a non-EIFS material (e.g., a window, door, or trim)?

Moisture Intrusion

Question · Medium

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