How Ducting, Mold and Animal Activity Can Affect Insulation -

Ducting, Mold & Animal Activity


Exposed HVAC Ducting in Garages or Attics

It is NOT code for any home to have unsealed ducting in the garage OR even an open duct for heat in the garage.  Ducts and openings should be sealed off from the garage and then insulated, and drywalled. It can also be spray foamed for 100% sealant with Closed Cell Foam.

Ducting in an attic space is usually insulated.  Bubble wrap with foil is NOT an insulator.  Heat loss from unsealed, uninsulated ducting will always have an impact on your home – causing ice damming.  Low insulation and/or heat in the attic can sometimes be visible on older roofs as it causes discoloration to the shingles over years of rapid melt off.


Heat loss, either from leaking heat ducts in attic or low insulation, can cause mold growth during the right times of the year.  As the furnace is running, it is pulling air back to the unit through the return air system.  This may also pull mold spores into the home thru any openings/penetrations within the attic.  This must be remediated by professionals before any work can proceed in an attic space.



Animal Activity

If you have rodent or raccoon activity in the attic, we can help with that. Cellulose material contains a borate mix in it which is a deterrent to rodents and even some insects. Raccoons must be trapped, and access points sealed by others prior to insulation work. Some insurance companies will cover raccoon destruction within attic spaces as well and if they do, we can help with that claim.

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