New Attic Insulation Over Old

Wet insulation is a breeding ground for mold mildew or rot.

New attic insulation over old.

According to energy star. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Faced insulation should not be placed on top of existing insulation in the attic. Yes in most instances you can.

The old insulation is very compressed or has decomposed. Any new roll or batt insulation installed over existing insulation in the attic needs to be without a vapor retarder face. Although insulation professionals will handle the installation for you here are some things to keep in mind about removing old insulation and installing new insulation over old insulation according to energy star. Do i have to take old insulation out of the attic before adding new house build around 1960 63.

However you must guard against mold and mildew growth. Believe it or not there are situations in a home when you should remove the old attic insulation before adding more over the existing and in this short video. Faced insulation should not be placed on top of existing insulation in the attic. Both can be added to uninsulated attics or layered over existing material.

If the insulation appears wet you have an underlying problem that needs to be addressed first. Can you put insulation over existing insulation. It use to fill the space between the boards and now there is very little. Although insulation professionals will handle the installation for you here are some things to keep in mind about removing old insulation and installing new insulation over old insulation according to energy star.

Any new batt or roll insulation installed. The vapor retarder on top of or between layers of insulation can trap moisture. Faced insulation should not be placed on top of existing insulation in the attic. For diy attic insulation you ve got two choices.

Loose fill or batt the common term for blanket insulation. Although insulation professionals will handle the installation for you it s important to keep a few things in mind when installing new insulation over old insulation. Can you add new insulation over old insulation.