What is VOC and why is it important in material selection?

• A. Volatile Organic Compound; affects indoor air quality and occupant health; low-VOC products are preferred.
• B. Volume Of Construction; affects budgeting.
• C. Vibration Of Cement; irrelevant.
• D. Ventilation Operation Control; not related.

Answer: (A)

Volatile Organic Compounds are gases released from many building materials and finishes that can off-gas at room temperature. This off-gassing can affect indoor air quality and occupant health, causing irritation and, with longer exposure, potential respiratory concerns. Because of that, choosing low-VOC or zero-VOC materials is a common and important practice in material selection to improve comfort, air quality, and overall well‑being in indoor spaces. When selecting products, look for low-VOC labels or certifications (such as GREENGUARD or similar), recognize that emissions may be higher during curing, and plan for adequate ventilation during installation. The other options refer to unrelated concepts like volume, vibration, or ventilation control, which don’t define VOC.