Cellulose insulation appears fluffy and usually comes in shades of beige, gray, or tan. Its texture and appearance are similar to papier-mâché, paper pulp, or finely shredded paper, giving it a unique and easily recognizable look.
For a basement ceiling, fiberglass batt insulation is commonly recommended due to its effectiveness in preventing heat transfer and its ability to absorb sound. This type of insulation is available in pre-cut panels that fit easily between ceiling joists, making it relatively simple to install.
The 3.5 inch thick R-15 insulation offers 36% more R-value compared to the standard R-11 fiberglass insulation. It features a kraft facing that must not be exposed as it can burn. Ensure the facing is in substantial contact with the finishing material and protect it from open flames or other heat sources.