Water Damage Restoration Technician (WRT) Certification Practice Test 2026 - Free Water Damage Restoration Practice Questions and Study Guide

Fiberglass insulation is generally considered not salvageable after being soaked by water due to its material properties. When fiberglass insulation gets wet, the water can penetrate the material, causing it to lose its insulating ability and structural integrity. The fibers can become matted down and may develop mold or mildew, making it less effective in insulating spaces and potentially posing health risks.

In contrast, some other types of insulation may have characteristics that allow for limited salvageability. For instance, spray foam insulation typically adheres to surfaces and can maintain its structure even when wet, although professional evaluation is still needed to determine its condition. Cellulose insulation, while affected by water, can sometimes be dried and reused if managed quickly. Rigid foam insulation, which is water-resistant to a degree, may still be salvageable depending on the extent of water exposure.

Thus, the inability of fiberglass insulation to retain its properties after exposure to water makes it the correct answer in identifying insulation that is not salvageable once soaked.