10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free HPIP-I questions are organized by exam domain, so you can see how each part of the High Performance Insulation Professional - Intermediate blueprint is tested. Reveal the answer and explanation under each question.
In an open exterior-wall bay, a fiberglass batt lies flat across a cable running halfway through the cavity. Its face looks even, but lifting an edge reveals an empty pocket behind the cable. The cable does not need to be moved. How should the batt be refitted?
Correct answer: B - Split the batt so insulation fits on both sides of the cable.
For a 1,000-square-foot attic, the loose-fill product's R-49 coverage row requires at least 14.3 inches of initial depth, 13.3 inches of settled depth, and 70.8 bags on the applicable unadjusted coverage basis. The crew installs 60 full bags and achieves a uniform initial depth of 14.5 inches. What must happen before R-49 can be documented?
Correct answer: C - Install the missing quantity, then verify coverage and initial depth again.
While clearing an attic access route, an insulation installer uncovers loose, pebble-like material with silver-gold flakes beneath fiberglass batts. The work order calls for vacuuming the old fill; no asbestos assessment has been performed. What is the appropriate response?
Correct answer: D - Leave the material undisturbed and arrange assessment by a qualified asbestos professional.
A batt-insulated wall is being graded under ANSI/RESNET/ICC 301-2014 Addendum F-2018, Appendix A. Inspection finds 1% of the insulated area compressed 1 inch below the thickness required for its rated R-value. There are no through-voids, and all other installation requirements are met. Which assessment is correct?
Correct answer: A - Grade III, because the local compression exceeds the permitted depth.
The approved wall schedule lists R-20+5. A contractor proposes R-25 entirely between the studs, with no continuous insulation. No alternative compliance design has been approved. Why is this not the specified assembly?
Correct answer: A - R-20+5 requires R-20 in the cavity and R-5 continuous over the framing.
A completed detached house in Climate Zone 5 is subject to the 2018 IECC. Its verified enclosed conditioned volume is 16,000 cubic feet; an 8,000-cubic-foot vented attic is outside the test enclosure. The blower-door report lists 960 CFM50. How should the leakage result be reported?
Correct answer: A - 3.6 ACH50; exceeds the 3 ACH50 limit.
A winter infrared scan shows narrow cool bands over wall studs. With a blower door depressurizing the house, those bands remain unchanged, but branching cool streaks appear at the ceiling-to-wall joint. Which explanation best distinguishes the two patterns?
Correct answer: D - Thermal bridging at the studs; air leakage at the ceiling joint.
The finished room in a story-and-a-half house has a cold floor beside its attic knee wall. The knee-wall batts and sealed attic-side backing are intact, but floor-joist bays below the wall run open into the vented attic. Which repair targets the bypass?
Correct answer: C - Block and seal the joist-bay openings beneath the knee wall.
A one-piece tub/shower unit is scheduled for an exterior wall whose cavities are still open. Once the unit is set, the lower wall will be inaccessible. The plans require an independent air barrier behind the unit, and plumbing rough-in is complete. Which work sequence avoids a concealed thermal-bypass defect?
Correct answer: D - Fit the insulation, install and seal the specified backing, inspect, then set the unit.
A cold-climate cantilever retrofit must retain a water line just below the subfloor. The approved detail places the line inside the thermal boundary, and all penetrations are sealed. Which insulation arrangement preserves the line's access to heat from the room above?
Correct answer: C - Below and outside the pipe, without insulating it from the subfloor.
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