Installing Fiberglass Insulation In Attic

Both can be added to uninsulated attics or layered over existing material.

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. Includes cutting and fastening insulation and insulating around obstacles. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic.

All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife. We ll walk you through the steps to help you find the right type of fiberglass attic insulation and the right amount. Fiberglass insulation is manufactured to slow airflow through the material. If installing fiberglass mats start by laying the mats at the furthest point from the attic access.

For diy attic insulation you ve got two choices. 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. When installing fiberglass insulation observe all safety precautions.

Loose fill or batt the common term for blanket insulation. Measure the depth of the existing insulation between the ceiling joists in the attic. First you ll need to determine your r value. If installing shredded insulation fill the attic space at least 15 inches high with insulation.

Fiberglass insulation is energy efficient affordable easy to install and readily available in a wide variety of sizes types and r values. The facing has a tab called a flange running along each side edge of the insulation. Multiply the depth in inches by 3 14 to determine the r value of the existing insulation. If it s a new building simply reference the energy code map.

Expert advice on how to install fiberglass insulation including methods for insulating walls floors ceilings attics and more. It s budget friendly and newer products don t irritate the skin and lungs. For more information see install blown in attic insulation and our. Installing fiberglass attic insulation first time adding insulation to an attic.

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. Lay the batts across the ceiling joists covering the existing insulation. The pros often use spray foam insulation or blow shredded insulation. Fiberglass is probably the most common material.