The first spots to check are the roof and attic but rain can seep into basements and crawlspaces too.
House smells like attic air.
Arguably one of the most common types of attic odors is mold.
If you do not have any of these your attic gets really hot and.
Most likely it s the smell of mold and or mildew.
Also ridge vent is popular in homes with new roof less than 10 years old.
If you allow moisture to accumulate in your attic even in the form of excess humidity you re almost certain to experience mold.
If your indoor hvac unit is inside your spray foamed attic that means you ve got ductwork up.
Create a custom ventilation.
One should then have a duct pressure test and a door blaster test to properly address ventilation issues.
Moisture feeds mold and mildew growth.
The musty smell that you may be smelling inside of your home is an odor that is often described as having a stale moldy or damp odor and usually impaired by mold or mildew.
Use a digital hygrometer to check the relative humidity of each room in the house you can find these for less than 10 online or at home improvement stores.
Every time your ac comes on the air leaving your vents stinks with a musty odor.
Call the spray foam manufacturer.
Seal your leaky ducts.
What in the world could it be.
This step is optional but you may want to pursue it anyway.
That s bad news because your ac is most likely distributing mold and or mildew spores throughout your home.
They explain that when an animal dies in the attic it s common for the smell to permeate the whole house.
Here s what to do.
This usually signals mold or mildew which could become a big problem for both your home and your health if not quickly remedied.
If your house smells musty after a rain and it s a significant difference rain is probably going where it shouldn t.
Microbial volatile organic compounds mvoc are stinky gasses produced by attic mold.
Fix the bathroom vents issue.
You should expect the attic to smell like the bathroom.
This odor takes time to develop inside of a home and is usually caused by dampness and moisture that is present within the environment.