Adding Attic Insulation To Existing

The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

Adding attic insulation to existing.

How to install attic insulation over existing insulation wear a long sleeve shirt gloves eye protection and a dust mask. When you find out the r values of your insulation either from an energy assessment. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Put on goggles and gloves to protect yourself while handling.

In case you have had your attic insulation installed more than 15 to 20 years ago it is advisable to get it replaced. Lay the batts perpendicular to the joists so. Measure how much insulation you already have. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling. 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. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.

This will slightly decrease the r value of the existing insulation. This effect is most important if the new insulation is more dense than the old insulation. Adding insulation to the attic with existing insulation pros and cons. Check the attic walls and floors adjacent to an unheated space like a.

For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6. This is because your original insulation r value most likely has dropped from recommended 60 to 20 30. Move across the attic until you ve hit your desired height at every point. Adding insulation to an existing home inspecting and evaluating your insulation.

Loose fill or batt the common term for blanket insulation. How do i add insulation to existing attic insulation. 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. For diy attic insulation you ve got two choices.

Check the depth using a tape measure. Then pivot in place and do the same thing to the other side. Both can be added to uninsulated attics or layered over existing material. Blow in insulation until the hopper is empty.

Estimating costs and.