How To Install Insulation In Attic Ceiling

While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic.

How to install insulation in attic ceiling.

When you reach the end of a line pull the insulation back slightly then place it on a joist so there is a solid surface to cut on. When rolling the insulation cut it to length using a utility knife. So if you re installing insulation in an attic that doesn t have any used faced insulation and put the paper side down toward the ceiling. Lay the batts across the ceiling joists covering the existing insulation.

Choose your insulation type. Using a straightedge as a guide make your cut image 2. Before installing determine the insulation material best suited for your home. If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier.

The standard width for joists is 24 inches. Check pipes and vents. Set up a stepladder tall enough to work comfortably from. Measure and mark the height on the baffle.

Calculate how much you need. You can find out more in our articles on how to apply a vapor barrier to attic insulation and which way to face insulation. Cut side fin and fold baffle at the measured mark to allow for correct insulation height. This old house general contractor tom silva and host kevin o connor demonstrate the proper way to insulate an attic.

Purchase rolls or packages of insulation that will fit in the spaces between the ceiling joists. Begin laying in the insulation starting at an area farthest from the attic access image 1.