Installing Fiberglass Insulation In Attic

In this video this old house general contractor tom silva and host kevin o connor explain how to insulate an attic.

Installing fiberglass insulation in attic.

Lay down boards or plywood sheeting to help you be able to walk safely in the attic space. First you ll need to determine your r value. Fiberglass insulation is energy efficient affordable easy to install and readily available in a wide variety of sizes types and r values. Fiberglass insulation is manufactured to slow airflow through the material.

We ll walk you through the steps to help you find the right type of fiberglass attic insulation and the right amount. Loose fill or batt the common term for blanket insulation. When installing fiberglass insulation observe all safety precautions. Multiply the depth in inches by 3 14 to determine the r value of the existing insulation.

For diy attic insulation you ve got two choices. All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife. When installing fiberglass insulation in your home be sure to put the paper or foil vapor barrier facing toward the heated and cooled living area of the home down in attics up under floors in on walls to prevent condensation from occurring. Fiberglass is probably the most common material.

There are many different ways to install insulation. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. Lay the batts across the ceiling joists covering the existing insulation. For more information see install blown in attic insulation and our.

The pros often use spray foam insulation or blow shredded insulation. Both can be added to uninsulated attics or layered over existing material. The most common materials are fiberglass cellulose and rock wool. When installing the insulation in wood frame structures you fold out the flange and staple it to the side or front edge of the framing to secure the insulation.

Installing fiberglass attic insulation first time adding insulation to an attic. The facing has a tab called a flange running along each side edge of the insulation. Measure the depth of the existing insulation between the ceiling joists in the attic. If installing fiberglass mats start by laying the mats at the furthest point from the attic access.

Fiberglass can release tiny fibers which can be harmful if breathed into the lungs and which may irritate the skin. If installing shredded insulation fill the attic space at least 15 inches high with insulation. Expert advice on how to install fiberglass insulation including methods for insulating walls floors ceilings attics and more. Includes cutting and fastening insulation and insulating around obstacles.