A: It depends on the core composition:
If using solid High-Density Polyethylene (HDPE), it remains combustible but may produce less dripping. It can achieve certain ratings (e.g., Class B1) with flame retardants.
If using solid mineral-reinforced core, higher fire ratings (e.g., Class A2) may be possible.
When inquiring, always specify the required fire rating and corresponding core type.