If your insulation is in good condition, removal may not be needed, and new insulation can be installed on top. However, if there are issues like moisture damage, pests, or aging insulation, removal and sanitization are necessary.
Insulation Removal Methods

Blown-in Insulation
Removed using an insulation vacuum, making the process quick and easy.

Foam Board Insulation
Simply remove and dispose of the lightweight panels.

Spray Foam Insulation
Requires specialized tools for removal, as it's a permanent material.
Signs of Insulation Failure

Higher Energy Bills
A sign of degrading insulation.

Inconsistent Indoor Temperature
Uneven temperatures indicate insulation issues.

Cold Floors/Walls
Suggests that outside air is penetrating your home.

Musty Odors
Could be from mold or improperly mixed spray foam off-gassing.

Frozen Pipes/Ice Dams
Indicate severe insulation deterioration in cold climates.

Pest Infestation
Rodents or insects nesting in insulation can cause damage.