Which fabric is unaffected by moisture and mildew?

Which fabric is unaffected by moisture and mildew?

• A. Nylon
• B. Fiberglass
• C. Polyester
• D. Cotton

Answer: (B)

Moisture and mildew resistance depends on the material’s composition and its ability to resist water uptake. Fiberglass is inorganic and non-porous, made of glass fibers, so it does not absorb water and cannot provide a food source for mildew. In damp environments, it stays dry and mildew-free. The other fabrics are organic or partly organic: cotton readily soaks up moisture and can support mildew growth in humid conditions, while nylon and polyester can absorb or wick some moisture and may harbor mildew if damp contaminants linger. Hence, fiberglass is the best choice for resisting both moisture and mildew.

Moisture and mildew resistance depends on the material’s composition and its ability to resist water uptake. Fiberglass is inorganic and non-porous, made of glass fibers, so it does not absorb water and cannot provide a food source for mildew. In damp environments, it stays dry and mildew-free. The other fabrics are organic or partly organic: cotton readily soaks up moisture and can support mildew growth in humid conditions, while nylon and polyester can absorb or wick some moisture and may harbor mildew if damp contaminants linger. Hence, fiberglass is the best choice for resisting both moisture and mildew.