Which option is NOT a HUD-classified substrate?

Which option is NOT a HUD-classified substrate?

• A. Stone
• B. Brick
• C. Wood
• D. Concrete

Answer: (A)

The idea being tested is which surface types HUD recognizes for its standard lead-based paint assessment guidelines. HUD classifies substrates as the common building materials you’re likely to encounter in housing, such as wood, brick, concrete, and other typical interior or exterior surfaces. These substrates have well-established sampling methods and interpretation within HUD-guided risk assessments. Stone isn’t included in HUD’s official list of substrates. It’s less common as an interior wall material and can vary a lot in composition and texture, which means there isn’t a single standardized HUD procedure for sampling and evaluating lead on stone. So, even though paint could be present on stone, it isn’t considered a HUD-classified substrate, which is why it’s the correct answer. The other options—wood, brick, and concrete—are standard HUD-classified substrates.

The idea being tested is which surface types HUD recognizes for its standard lead-based paint assessment guidelines. HUD classifies substrates as the common building materials you’re likely to encounter in housing, such as wood, brick, concrete, and other typical interior or exterior surfaces. These substrates have well-established sampling methods and interpretation within HUD-guided risk assessments.

Stone isn’t included in HUD’s official list of substrates. It’s less common as an interior wall material and can vary a lot in composition and texture, which means there isn’t a single standardized HUD procedure for sampling and evaluating lead on stone. So, even though paint could be present on stone, it isn’t considered a HUD-classified substrate, which is why it’s the correct answer. The other options—wood, brick, and concrete—are standard HUD-classified substrates.