When to Hire a Professional to Dry Wet Insulation

If the wet spot is small, say a few square feet, and the water was clean, you may be able to dry it yourself. Use fans, a dehumidifier, and open windows to speed evaporation. Check the insulation after two days; if it still feels damp, you likely need more powerful drying.

The key is time. If insulation stays wet for more than 48 hours, mold can start growing. Also, if the insulation is fiberglass and it becomes compressed or soggy, it loses its thermal value. In that case, replacement may be the only option.

• Small, clean water spill
• Insulation is still fluffy and intact
• You can dry the area within 48 hours
• No musty odor develops
• You have a dehumidifier and fans

Clean water from a supply line is one thing. But if the water came from a toilet overflow, sewage backup, or floodwater, it is contaminated. Drying that insulation yourself is unsafe. Contaminated water can carry bacteria and pathogens, and you should not attempt to dry it without proper safety gear.

In those cases, call a professional water damage pro. They have the equipment and training to handle contaminated water safely. They will also know when insulation must be removed and disposed of properly. You should also see a doctor if you feel unwell after exposure.

Not all wet insulation can be dried. Fiberglass, cellulose, and foam board each react differently. If the insulation is compressed, stained, or has been wet for more than a few days, replacement is often safer and more cost-effective. Drying may not restore its insulating value.

A professional can assess the condition and advise you. If replacement is needed, they can remove the old insulation and install new material. The cost depends on the type of insulation, the area size, and how much drywall or framing must be removed. Get a written assessment before deciding.