Rock the Georgia Residential Contractor Exam 2025 – Build Your Success Blueprint!

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Which material is NOT appropriate for use as a covering over the aggregate?

Building paper

Grass sod

Grass sod is not appropriate as a covering over the aggregate because it requires specific conditions to grow and thrive, including adequate moisture, nutrients, and sunlight. When placed over aggregate, grass sod may struggle to establish roots and could dry out without proper irrigation. Therefore, it typically does not provide the desired benefits compared to other materials.

On the other hand, building paper serves as a moisture barrier, protecting underlying layers from water infiltration, while straw is commonly used for erosion control and helps to retain moisture in the soil. Similar approved materials may also offer protection and stabilization benefits, making these options more suitable for covering over aggregate.

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Straw

Similar approved material

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