Practice Test Geeks(EIFS) Certified Exterior Insulation and Finish Systems Inspector Practice Test
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Substrate Preparation & Surface Compatibility Flashcards

7 cards from real EIFS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Substrate Preparation & Surface Compatibility flashcards as text

  1. What is the maximum allowable moisture content of a wood sheathing substrate before EIFS application, according to industry standards?

    Answer: 19%

    Wood sheathing must have a moisture content of 19% or less before EIFS installation to prevent adhesion failure and moisture-related damage.

  2. Which of the following substrate defects MUST be corrected before applying EIFS adhesive?

    Answer: Efflorescence on concrete masonry

    Efflorescence indicates ongoing moisture migration and must be removed and the source corrected before EIFS application to ensure proper adhesion.

  3. When inspecting a concrete masonry unit (CMU) substrate for EIFS compatibility, what is the primary concern regarding form release agents?

    Answer: They can prevent proper bonding of EIFS adhesive

    Form release agents leave a chemical residue on concrete surfaces that inhibits adhesion of EIFS components and must be removed before application.

  4. What is the minimum compressive strength of concrete required as an acceptable EIFS substrate?

    Answer: 2,000 psi

    A minimum compressive strength of 2,000 psi is generally required for concrete to provide adequate structural support for EIFS without pullout failure.

  5. Which type of sheathing is INCOMPATIBLE with certain EIFS adhesives due to its glass mat facing?

    Answer: Exterior gypsum sheathing (DensGlass)

    Some EIFS adhesives are not compatible with glass mat-faced gypsum sheathing and require a specific compatible adhesive or primer per the manufacturer's specifications.

  6. Before applying EIFS to a previously painted concrete surface, an inspector should verify that the existing paint is:

    Answer: Well-bonded and not peeling

    Existing paint must be well-bonded to the substrate; peeling or delaminating paint will cause EIFS failure since it cannot bond through a weak intermediate layer.

  7. What test is commonly used in the field to assess the bond strength of an existing coating or substrate before EIFS installation?

    Answer: Pull-off adhesion test

    A pull-off adhesion test measures the tensile bond strength of an existing surface coating or substrate to determine if it can support EIFS installation.