Some porch columns are load-bearing, while others are not. That’s why it’s critical to make sure you’re opting for the right porch column type for your needs. PVC, cellular columns are loved for their general durability, cost and versatility. However, the downside is that these columns are not load-bearing. Examples of load-bearing porch columns include: wood (all kinds), fiberglass, steel and aluminum. Thus, porch Columbus are categorized as either purely decorative or load-bearing. To be load-bearing, the porch columns must include some type of internal support.