Adding Attic Insulation To Existing

Then pivot in place and do the same thing to the other side.

Adding attic insulation to existing.

Check the depth using a tape measure. Measure how much insulation you already have. Check the attic walls and floors adjacent to an unheated space like a. This effect is most important if the new insulation is more dense than the old insulation.

How to install attic insulation over existing insulation wear a long sleeve shirt gloves eye protection and a dust mask. Estimating costs and. When you stack new insulation on top of existing attic insulation the existing insulation is compressed a small amount. So this thickness does not stop or prevent your home from heat loss.

This will slightly decrease the r value of the existing 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. This is because your original insulation r value most likely has dropped from recommended 60 to 20 30.

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. Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling.

Move across the attic until you ve hit your desired height at every point. For diy attic insulation you ve got two choices. Install fiberglass batts over existing batt insulation. Loose fill or batt the common term for blanket insulation.

Both can be added to uninsulated attics or layered over existing material. 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. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

Blow in insulation until the hopper is empty. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of 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.