LEED-AP-Homes Exam Dumps : LEED AP Homes (Residential) Exam

TheLEED for Homes Rating System (v4)awards points for theMaterials and Resources (MR) Credit: Environmentally Preferable Productswhen using certified lumber, specifically Forest Stewardship Council (FSC)-certified wood, which contributes to the required percentage of material cost.

According to theLEED Reference Guide for Homes Design and Construction (v4):

MR Credit: Environmentally Preferable Products (1–4 points)

Use FSC-certified wood for at least 25% (1 point), 50% (2 points), or 90% (3–4 points) by cost of the total materials. For specific material categories like roof sheathing, at least 90% of the component (by cost) must be FSC-certified to significantly contribute to the credit.

Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160–161.

TheLEED v4.1 Residential BD+Crating system confirms:

MR Credit: Environmentally Preferable Products

Points are awarded for FSC-certified lumber if it constitutes at least 90% of a specific component like roof sheathing (by cost) to meet higher point thresholds (e.g., 3–4 points). Certified lumber is not a prerequisite; it contributes to the credit.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer isif the certified content is greater than 90%(Option B), as this ensures the roof sheathing significantly contributes to the credit’s material cost threshold for points.

Why not the other options?

TheLEED for Homes Rating System (v4)includes theMaterials and Resources (MR) Prerequisite: Certified Tropical Wood, which ensures that wood used in LEED projects is sourced sustainably to protect tropical ecosystems.

According to theLEED Reference Guide for Homes Design and Construction (v4):

MR Prerequisite: Certified Tropical Wood

All new wood in the project must be nontropical, reused, reclaimed, or certified by the Forest Stewardship Council (FSC). Tropical wood, if used, must be FSC-certified. This prerequisite ensures that wood sourcing does not contribute to deforestation in ecologically sensitive regions.

Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Prerequisite: Certified Tropical Wood, p. 156.

TheLEED v4.1 Residential BD+Crating system confirms:

MR Prerequisite: Certified Tropical Wood

All wood must be nontropical, reused, reclaimed, or FSC-certified. Tropical wood is only permitted if it is FSC-certified.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

To comply, all wood must benon-tropical, reused, reclaimed, or certified(Option A), ensuring sustainable sourcing across all wood types used in the project.

Why not the other options?

TheLEED for Homes Rating System (v4)addresses window performance in theEnergy and Atmosphere (EA) Credit: Windows, where a lower U-factor (thermal transmittance) improves energy efficiency by reducing heat loss or gain.

According to theLEED Reference Guide for Homes Design and Construction (v4):

EA Credit: Windows (1–3 points)

Use windows with a lower U-factor to reduce energy use by minimizing heat transfer through the glazing, improving the home’s thermal performance and reducing heating and cooling loads.

Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Windows, p. 122.

TheLEED v4.1 Residential BD+Crating system confirms:

EA Credit: Windows

A lower window U-factor reduces energy use by decreasing heat loss in winter and heat gain in summer, contributing to overall energy efficiency.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer isreduced energy use(Option B), as a lower U-factor directly improves the home’s energy performance by reducing thermal transfer.

Why not the other options?