Adding Attic Insulation To Existing

Install fiberglass batts over existing batt insulation.

Adding attic insulation to existing. So this thickness does not stop or prevent your home from heat loss. When you find out the r values of your insulation either from an energy assessment. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6. For diy attic insulation you ve got two choices.

Add the right kind of insulation when adding additional insulation you do not have to use the same type of insulation that currently exists in your attic. Check the depth using a tape measure. This is because your original insulation r value most likely has dropped from recommended 60 to 20 30. Loose fill or batt the common term for blanket insulation.

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. Estimating costs and. When you stack new insulation on top of existing attic insulation the existing insulation is compressed a small amount. This effect is most important if the new insulation is more dense than the old insulation.

Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Adding insulation to an existing home inspecting and evaluating your insulation. Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling. Measure how much insulation you already have.

Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. How to install attic insulation over existing insulation wear a long sleeve shirt gloves eye protection and a dust mask. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. How do i add insulation to existing attic insulation.

Both can be added to uninsulated attics or layered over existing material. Lay the batts perpendicular to the joists so. Check the attic walls and floors adjacent to an unheated space like a. Then pivot in place and do the same thing to the other side.

Move across the attic until you ve hit your desired height at every point. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Blow in insulation until the hopper is empty. In case you have had your attic insulation installed more than 15 to 20 years ago it is advisable to get it replaced.

This will slightly decrease the r value of the existing insulation.