Final answer:
The question appears to be about the weight comparison between synthetic insulators like fiberglass and the materials they replace, which usually results in a lighter insulating material. An exact percentage cannot be determined from the given resources, but synthetic insulators, due to their structure and air content, are generally lighter and offer easier handling and installation benefits.
Step-by-step explanation:
The question posed relates to the evaluation of insulating materials and how synthetic insulators like silica or fiberglass may compare to the insulators they replace in terms of weight. Unfortunately, the given resources do not provide specific information about the weight comparison between synthetic insulators and the materials they replace. Detailed knowledge of insulation materials suggests that synthetic insulators like fiberglass typically are lighter than traditional materials such as cellulose, mineral wool, or ceramic fibers. This is due to the physical properties of the synthetic materials, where many small pockets of air within these insulators contribute to their light weight and good insulation properties.
Specifically addressing the weight percentage, without exact figures for the original material weight and the replacement, an accurate percentage cannot be provided. However, materials like fiberglass are known to offer significant reductions in weight when replacing denser insulation materials. This lightweight nature contributes to easier handling and installation and potentially lower structural load on buildings.