Cellulose insulation can be installed using the loose-fill method in which the installer or DIYer simply blows the insulation into an open attic using a blowing machine. This method is effective ...

If you can see the floor joists of your attic space through the insulation, it’s likely too thin to provide a sufficient thermal barrier. Dust or Allergens: Older cellulose insulation may ...

Related: The Real Reasons You Need Better Attic Insulation Cellulose insulation typically has a lifespan of 20–30 years but can degrade faster if exposed to moisture, pest or animal infestation ...

attic ventilation, and sealing. Poor airflow or gaps in the structure can reduce the effectiveness of new insulation, no matter how high its quality. Cellulose insulation typically has a lifespan ...

Blown-in insulation is excellent at trapping heat; however, it won't stop airflow into your attic space from gaps and cracks.

None of these maintenance attempts fixed the issue. The homeowner, however, wrote that the home lacks attic insulation and asked fellow Redditors if that could be causing the trouble. Many commenters ...