As an expert in the insulation industry, I have been frequently asked about the best way to install attic insulation over existing insulation. The answer is yes, it is possible to place new insulation on top of old insulation. However, there are certain circumstances where it may be necessary to remove the old insulation first. One of the main reasons for removing old insulation is if it has been contaminated by pests, water, or smoke.
Moisture is a major culprit, as it can lead to mold and mildew growth, as well as rotting of ceilings and ceiling beams. In these cases, it is important to remove the old insulation before installing new insulation to prevent further damage. But what if your old insulation is still in good condition? Can you simply add new insulation on top of it? The answer is yes, and there are a few different types of insulation that are easily installed over existing insulation.
