Adding Attic Insulation To Existing

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.

Adding attic insulation to existing.

This effect is most important if the new insulation is more dense than the old insulation. Check the depth using a tape measure. Adding insulation to an existing home inspecting and evaluating your insulation. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.

When you find out the r values of your insulation either from an energy assessment. This is because your original insulation r value most likely has dropped from recommended 60 to 20 30. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Check the attic walls and floors adjacent to an unheated space like a.

So this thickness does not stop or prevent your home from heat loss. This will slightly decrease the r value of the existing insulation. 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.

Loose fill or batt the common term for blanket insulation. Adding insulation to the attic with existing insulation pros and cons. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. When you stack new insulation on top of existing attic insulation the existing insulation is compressed a small amount.

In case you have had your attic insulation installed more than 15 to 20 years ago it is advisable to get it replaced. Move across the attic until you ve hit your desired height at every point. Estimating costs and. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6.

Put on goggles and gloves to protect yourself while handling. Install fiberglass batts over existing batt insulation. How do i add insulation to existing attic insulation. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling. 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. For diy attic insulation you ve got two choices.

Measure how much insulation you already have.