What does the R-value of an insulation product measure?
General Knowledge
Question · Easy
Six feet: a hard-hat anthem
Short
How is U-factor related to R-value for a simple homogeneous assembly?
Heat transfer through a solid wall assembly by molecular vibration is called:
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Which heat-transfer mode is reduced most effectively by a radiant barrier facing an air space?
Question · Medium
Compressing a fiberglass batt into a cavity shallower than its labeled thickness primarily causes which performance loss?
Question · Hard
Thermal bridging in a wood-framed wall is best described as:
Which statement about labeled insulation R-value is correct under the FTC R-value Rule concept?
In building science terms, an air barrier primarily controls:
Which material property most directly indicates resistance to water-vapor diffusion?
Alabama is generally in a mixed-humid climate. For wall assemblies, this typically means vapor control design should:
The primary energy purpose of installing insulation in a building envelope is to:
Which statement best describes the difference between R-value and installed performance?
Sound control (acoustical) insulation in walls primarily works by:
Which factor most improves the effective thermal performance of cavity insulation in a framed wall?
K-value (thermal conductivity) is related to R-value for a homogeneous layer by which relationship?
When insulation is installed on the exterior of a foundation wall below grade, a common purpose is to:
On a set of construction drawings, the insulation R-value for attic floor insulation is most commonly found in which location?
Plan Reading Estimating
A floor plan shows a rectangular attic footprint of 40 ft by 50 ft. What is the attic floor area for insulation takeoff (ignoring openings)?
When estimating batt insulation for stud walls, the quantity is typically based on:
A manufacturer's loose-fill coverage chart is used primarily to determine:
If a coverage chart requires 16.8 bags per 1,000 sq ft for R-38 fiberglass loose-fill, approximately how many bags are needed for a 1,500 sq ft attic at R-38 (before waste)?
On a wall section detail, "R-19 kraft-faced batt in 2x6 stud cavity" indicates the installer should:
When performing a material takeoff for continuous exterior foam board, which measurement is most important?
A scale of 1/4" = 1'-0" on a floor plan means a wall drawn 3 inches long on paper represents:
Which unit conversion is correct for insulation estimating?
A job specifies R-30 attic insulation. The estimator should first:
Spray polyurethane foam (SPF) is formed on site by mixing which two primary liquid components?
Spray On
Compared with open-cell spray foam, closed-cell spray foam typically provides:
Open-cell spray foam is generally characterized by approximately which density class?
A key advantage of closed-cell spray foam in many assemblies is that it can:
Before spraying foam into a wall or roof cavity, the substrate should generally be:
Off-ratio spray foam (incorrect A:B proportioning) most commonly results in:
When SPF is left exposed in occupied spaces, building codes typically require:
Lift thickness (pass thickness) limits for spray foam are specified by manufacturers primarily to:
Fiberglass batt insulation is most commonly manufactured from:
Batt Roll
When installing kraft-faced batts in exterior walls, the kraft facing is generally placed:
Unfaced fiberglass batts are often preferred when:
Proper batt installation in a stud cavity requires the batt to:
Mineral wool (rock or slag wool) batts differ from typical fiberglass batts in that mineral wool generally:
When insulating floor joist cavities above an unconditioned crawlspace with batts, a common correct practice is to:
Paper-faced batts used in walls should have facing flanges:
Selecting a batt labeled R-13 for a standard 2x4 (3.5-in.) wall cavity is appropriate because:
Blown or loose-fill attic insulation is typically installed with:
Blown Loose Fill
Cellulose loose-fill insulation is commonly made from:
For blown attic insulation, R-value compliance is verified by checking:
Why do cellulose coverage charts list both installed thickness and settled thickness?
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