Wet Insulation In The Attic

Loss of insulating value.

Wet insulation in the attic. Cellulose recycled ground up paper with boric acid added for insect control and fire resistance offers a better attic insulation option than batts. Wet insulation is inefficient but more immediately it can be a hidden risk. Put on protective gear such as gloves safety goggles and a breathing mask to remove wet insulation and discard it in the trash. For example it is rare to see moisture problems or ice damming on the roof of a detached garage or unheated barn.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Insulation sits just below the roof s membrane. If the fiberglass within your wall cavity or in your attic becomes wet from a leaky roof or burst pipe it will lose insulating effectiveness until the material dries. The two most common types of insulation fiberglass batts and blown in cellulose loose fill are vulnerable to attic water damage in two specific ways.

Both can be added to uninsulated attics or layered over existing material. When a leak allows water to seep in through. 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. What to do about a wet attic.

You can replace the insulation after the attic is dry. Handy homeowners can install blown in insulation in the attic. Pros and cons of cellulose attic insulation. For diy attic insulation you ve got two choices.

If you can ensure good air sealing and insulation the attic will remain cool and dry as if it were outside. Prolonged wetness will rot out the roof sheathing. Saturated insulation typically loses at least 40 of its insulating r value. Loose fill or batt the common term for blanket insulation.

When a roof leak leads to saturated insulation that insulation almost always needs to be replaced. There are many signs that an attic is wet. Wet insulation no longer performs its primary function of inhibiting heat transfer. If you choose to install cellulose yourself you can buy the insulation in bags from your local home improvement store.

Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical. Small black and or greenish colored dots on insulation boxes or other materials is a sign of an exceedingly high moisture content in the air. Coping with wet insulation.