How to Insulate Walls with Blanket Insulation Part 2 How to Insulate Walls with Blanket Insulation Part 2

What You'll Need
Fiberglass blanket insulation
Utility knife
Safety gloves
Safety glasses
Vapor barrier

This article is the second part of a two-part series on how to insulate walls in your home with blanket insulation. We discussed blanket insulation and safety tips when working with the insulation in the first article. This article will focus on cutting and installing the blanket insulation. (To return to Part 1, click here.)

Step 1: Cutting the Blanket Fiberglass

After you have completed the purchase of the materials for the project you need to measure the insulation to cut the pieces for installation. Use a utility knife or sharp carpet knife to cut the pieces for installation in the walls. You will need to make sure that the knife or razor maintains its sharpness for each of the cuts that you make; keep extra blades around in case they are needed to replace the ones that you used to cut the fiberglass insulation.

With the insulation cuts made you can align the pieces to place them into the stud walls and insulate them.

Step 2: Placing the Insulation into the Walls

Take the cut pieces of insulation and stuff them into the walls. Secure the fiberglass pieces with a stapler if necessary. The fiberglass should stand in place as you stuff the pieces in the walls.

Step 3: Install a Vapor Barrier

You may need to install a vapor barrier once the fiberglass blanket insulation has been set in place. The vapor or moisture barrier protects the insulation from becoming wet and keeps moisture out of your walls. This is important in climates that are subject to drastic changes in the climate or a build up of moisture.

Place the vapor barrier across the studs forming the wall in order to enclose the insulation. Use the stapler to tap in place the vapor barrier. Pull the vapor barrier taut as you staple it to remove or restrict the amount of air flowing inside the stud walls prior to the installation of the dry wall.

After you have installed the vapor barrier, clean up all of the loose debris and other waste and materials that have been left behind from the insulation process. Once you have completed your clean up, inspect the work to see if any holes or other damage has been done to the vapor barrier. Use an insulating tape to cover all of the seams, as well as any rips, tears or holes to make the vapor barrier as tight as possible. This will then conclude the insulation process and prepare the bare walls for their dry wall completion.

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