When choosing between bronze and glass-reinforced plastic (GRP) sculptures, weight is a critical factor that influences installation, transportation, and display. Bronze sculptures are significantly heavier due to the density of the metal, making them more stable but challenging to move. A medium-sized bronze piece can weigh hundreds of pounds, requiring sturdy bases or professional handling.

In contrast, GRP sculptures are lightweight, often weighing just a fraction of their bronze counterparts. This makes them ideal for indoor displays, temporary installations, or locations with weight restrictions. Despite their lighter weight, GRP sculptures can mimic the appearance of bronze through finishes, offering versatility without the heft.

Durability also plays a role—bronze withstands weathering better, while GRP may degrade over time but is easier to repair. Ultimately, the choice depends on your project's needs: opt for bronze for permanence and prestige, or GRP for flexibility and ease of use.