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attic mold

Prevent Attic Mold in Minnesota & Wisconsin

Moist air from a dryer vent has caused mold to grow on the roof sheathing

Mold from a ventilation mistake. The black stain on the roof sheathing is a mold infestation. It’s caused by a dryer vent that blows moist air into the attic instead of ducting this air to the outside.

Is there mold in your attic? Mold announces its presence in the form of musty odors or blotchy stains on wood, drywall, and other materials. While attic mold is less of a health concern than mold that occupies your living space, it can still cause problems in an unfinished attic by rotting wood, ruining drywall and damaging other materials.

Step #1: Know your enemy

Molds belong to a vast family of fungi that can grow just about anywhere if moisture, oxygen and cellulose (or other organic material) are present. Because mold reproduces by microscopic spores that travel in the air, it can easily find its way into the attic through roof vents, air leaks in the attic floor and larger openings like attic hatchways or drop-down stairs.

Airborne mold spores cause a wide range of respiratory ailments and allergic reactions. But when mold is found in the attic, the main concern is usually damage from rot and excess moisture. It’s not important whether you see black mold in the attic, white mold, or another color. The issue is how to stop mold from spreading and causing more severe damage.

Get an energy efficient, mold-free attic: We provide a free estimate for air sealing and attic insulation

Schedule a free estimate for insulation installation and air sealing to help prevent mold growth in your attic. We serve all of the Greater Duluth, MN and Superior, WI Area, including Two Harbors, Nisswa, Saginaw, Duluth, Esko, Superior, Grand Rapids as well as Moose Lake, Hibbing, Ashland, Bovey, International Falls, South Range, Cohasset, Cloquet, Carlton and surrounding areas.

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Moist air in a cold attic = mold growth

Attic mold is more prevalent in colder climates than in warm climates. To understand how an attic mold infestation can start, let’s look at some common ventilation errors. In many houses, a bathroom vent fan is allowed to dump moist bathroom air into the attic space rather than ducting this air to the outside. So when someone turns on the bathroom fan while taking a hot shower on a cold morning, a large volume of warm, moist air is blown into the attic space. When the warm, moist air hits cold roof sheathing in the attic, most of the moisture condenses out of the bathroom air. Water wets the roof sheathing, drips down the rafters and saturates attic insulation. Wet wood in a dark space is an ideal environment for mold to take hold.

We can seal air leaks to reduce energy problems and prevent attic mold

Warm, moist air that makes its way into a cool attic causes more than attic mold problems. In many houses, it’s also a sign that too much conditioned air is leaking into the attic, compromising comfort and causing the HVAC system to consume more energy than necessary.

Warm, moist air from the living space doesn’t need a fan to migrate up into the attic. It can get there through air leaks around recessed light fixtures, through gaps around heating vents, through air leaks around an attic access hatch, and through numerous other cracks and leaks. Mold can form in the attic from this “passive” air leakage alone.

In order to prevent mold growth in your attic, it's important to make sure you have right amount of attic insulation and that your home is properly air sealed. Our SuperAttic insulation system can help seal and insulate your attic to improve energy performance and stop mold.

Stop attic mold and cut your HVAC expenses by 40 percent

To reduce the amount of air that leaks into the attic from the living space below, energy technicians can air seal the attic and make sure that vent fans and dryer vents are ducted to the outside. The energy technician can also make sure that the attic roof is properly ventilated with the right combination of soffit, ridge and gable-mounted vents. These improvements are usually enough to stop attic mold growth and moisture damage. There’s an important additional benefit to having this work done: air sealing the attic and having the attic properly insulated can cut heating and cooling costs by as much as 40 percent.

We install several types of insulation for the attic, including spray foam insulation, blown-in attic insulation, radiant barrier and more in Esko, Superior, Grand Rapids, Saginaw, Nisswa, Two Harbors, Duluth, Pequot Lakes, Silver Bay, Aurora, Virginia, Hayward, Aitkin, Spooner, Washburn, Britt and nearby. Schedule a free attic insulation estimate today and see how air sealing and proper insulation is a cost-effective way to stop attic mold!

Do you have mold in your attic or an uncomfortable home or high energy bills? Dr. Energy Saver Solutions offers a home energy audit to diagnose energy problems and suggest the proper repairs, whether it's adding more home insulation, sealing air leaks or installing replacement windows.

Looking for a price? Get a no cost, no obligation free estimate.

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Serving NE MN & NW WI including the Greater Duluth area
Our Minnesota & Wisconsin Service Area
Cities in Aitkin County, MN
Aitkin
Hill City
Mcgregor
Palisade
Tamarack

Cities in Beltrami County, MN
Blackduck
Pennington

Cities in Carlton County, MN
Barnum
Carlton
Cloquet
Cromwell
Esko
Holyoke
Kettle River
Moose Lake
Sawyer
Wrenshall
Wright

Cities in Cass County, MN
Backus
Bena
Federal Dam
Hackensack
Longville
Outing
Pine River
Remer
Swatara
Walker

Cities in Cook County, MN
Grand Marais
Grand Portage
Hovland
Lutsen
Schroeder
Tofte

Cities in Crow Wing County, MN
Crosby
Crosslake
Deerwood
Emily
Fifty Lakes
Ironton
Merrifield
Nisswa
Pequot Lakes

Cities in Itasca County, MN
Bigfork
Bovey
Cohasset
Deer River
Effie
Goodland
Grand Rapids
Jacobson
Marcell
Max
Nashwauk
Pengilly
Spring Lake
Squaw Lake
Swan River
Talmoon
Warba
Wirt

Cities in Koochiching County, MN
Big Falls
International Falls
Kabetogama
Littlefork
Loman
Mizpah
Northome
Ranier

Cities in Lake County, MN
Finland
Isabella
Silver Bay
Two Harbors

Cities in Pine County, MN
Sturgeon Lake

Cities in Saint Louis County, MN
Alborn
Angora
Aurora
Babbitt
Biwabik
Brimson
Britt
Brookston
Canyon
Chisholm
Cook
Cotton
Crane Lake
Duluth
Ely
Embarrass
Eveleth
Floodwood
Forbes
Gilbert
Hibbing
Hoyt Lakes
Iron
Kinney
Makinen
Meadowlands
Mountain Iron
Orr
Saginaw
Side Lake
Tower
Virginia

Cities in Ashland County, WI
Ashland
Clam Lake
Glidden
High Bridge
La Pointe
Marengo
Mellen

Cities in Bayfield County, WI
Bayfield
Cable
Cornucopia
Drummond
Grand View
Herbster
Iron River
Mason
Port Wing
Washburn

Cities in Burnett County, WI
Danbury

Cities in Douglas County, WI
Brule
Foxboro
Gordon
Lake Nebagamon
Maple
Poplar
Solon Springs
South Range
Superior

Cities in Iron County, WI
Upson

Cities in Sawyer County, WI
Hayward
Stone Lake

Cities in Washburn County, WI
Minong
Spooner
Springbrook
Trego

Please call us at: 1-218-755-7972
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