Dec 31, 2019

Four Scenarios When Your Insulation Needs to Be Replaced

In many situations, it’s possible for quality contractors to replace insulation or make enhancements to your current attic insulation and ventilation to make it more effective.  However, in certain scenarios the best course of action is to remove the old insulation and start over.  Here are a few concerns that should make you consider an insulation replacement at your home.

Damaged Insulation From Animal Infestation

Once pests such as mice, raccoons, squirrels, and bats enter a home, they’re able to tunnel through cellulose and fiberglass insulation which can cause attic problems for homeowners.  This prevents attic insulation from working as it should. It isn’t long before the animals begin using your attic as a bathroom.  The pheromones their droppings contain can even attract more company from pests.  In addition to the overall gross factor of animal feces in your attic, they also pose a serious risk to your home’s indoor air quality, which warrants making insulation replacement a priority.  This is because pathogens can be inhaled without ever having to come in direct contact with them as air flows from the attic and throughout the home.

bat droppings in attic
This attic inspection turned up a sizable amount of bat droppings.

Consider An Insulation Replacement If You Have Vermiculite:

Mined from the earth, vermiculite is comprised of lustrous flakes. When brought to a high temperature, the flakes expand. In its unadulterated form, vermiculite insulation is nontoxic. However, a mine in Libby, Montana was the source of most of the vermiculite sold in the country from 1919 to 1990. Incidentally, the mine also contained a deposit of asbestos, contaminating the vermiculite used for home insulation. While not all vermiculite insulation contains asbestos, attics with vermiculite insulation should be tested for the presence of asbestos. Asbestos fibers that are disturbed can become airborne and increase the risk for lung cancer and mesothelioma. Removing and replacing insulation contaminated with asbestos should only be completed by a licensed and reputable ventilation and insulation contractor with extensive experience in this area.

Replace Attic Insulation That’s Moldy

Attic mold flourishes in warm, humid, damp environments.  Leaky roofs, bath fans venting into the attic, and an insulation installation completed by amateurs can all lead to mold growth on attic insulation.  Once mold on insulation is present, it quickly spreads.  Moldy insulation proves problematic because it causes an array of health issues such as watery eyes, persistent fatigue, and continuous headaches.  If you’re wondering if your old insulation or mold could be attributing to your sickness or allergies, it could likely be a mix of the two.  After a trustworthy contractor has pinpointed the source of water and moisture with a proper solution, replacing insulation should be addressed.  After that, new insulation should be installed.

attic mold

Watch Our Ventilation & Insulation Contractors Complete A Project:

Prioritize Replacing Insulation Damaged By Fire:

When a home catches on fire, the smoke rises to the attic.  Even if the home is not a total loss, the attic insulation will take on a strong, smoky smell.  In addition, the properties of the damaged insulation have been compromised, rendering it useless.  After a fire, it’s best to remove and replace the insulation as quickly as possible. Moderately burned insulation can conceal a covert spark which can re-ignite after smoldering.

Browse Our Home Insulation Installation Projects:

See Browse Our Insulation and Ventilation & Insulation Replacement Reviews:

"My experience was wonderful.  The guys did a walk through before starting and helped remove stubborn ceiling tiles. They shoveled my sidewalk between the hose and garage to minimize tracking any snow in.  Very personable and dealt with some difficult access to several sill areas. I always inform my friends of my projects with Lindus and the quality of the work and the crews."

Michaeleen K.
Minneapolis, MN
March 9, 2023

“When we heard about a free heat map analysis, we decided to have one done on our attic.  Brandon came out and suggested we could improve our home’s energy efficiency by installing Thermax boxes sealed to our drywall, along with more insulation.  Randall contacted us to complete our project and it was done in a timely manner.  They did a nice job and exhibited expert workmanship.  The team was polite, and we are very pleased with the result.  In the past, Lindus has also completed a kitchen renovation and the installation of a new deck.  They are top-notch and hire qualified people.”

Tom I.
Somerset, WI
March 1, 2023

"Thanks again for the great job on the spray foam."

Todd B.
Plymouth, MN
August 26, 2022

"Thank you for going above and beyond the call of duty to help me out.  Your expertise made all the difference in helping me resolve my house projects!"

Patricia M.
Bloomington, MN
August 19, 2022

"We used Lindus for a rather complicated attic re-insulation project. They are highly competent and do great work!"

Leon P.
White Bear Lake, MN
July 16, 2022

"They were contracted to insulate the garage ceiling which they did in a two-step process with both foam and blown-in insulation. They then returned to put up new gutters facia and soffits in a two day process that was professional, neat , and used materials economically."

Stephen G.
MInneapolis, MN
April 28, 2022
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