If your insulation becomes wet, it's crucial to remove and replace it promptly. Wet insulation can significantly lose its effectiveness and may also pose health risks due to potential mold and mildew growth.
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.
You should start by preparing your attic space. First, check and clear the area where the baffles will be installed, removing any old insulation from the edges if necessary. For more information, check out our guide https://www.greenattic.com/blogs/how-to-install-attic-baffles