Installing Fiberglass Insulation In Attic

When installing fiberglass insulation observe all safety precautions.

Installing fiberglass insulation in attic.

Multiply the depth in inches by 3 14 to determine the r value of the existing insulation. Lay the batts across the ceiling joists covering the existing insulation. Installing fiberglass attic insulation first time adding insulation to an attic. Fiberglass insulation is manufactured to slow airflow through the material.

First you ll need to determine your r value. For diy attic insulation you ve got two choices. The pros often use spray foam insulation or blow shredded insulation. Fiberglass is probably the most common material.

If it s a new building simply reference the energy code map. Includes cutting and fastening insulation and insulating around obstacles. All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife. Lay down boards or plywood sheeting to help you be able to walk safely in the attic space.

Both can be added to uninsulated attics or layered over existing material. Fiberglass can release tiny fibers which can be harmful if breathed into the lungs and which may irritate the skin. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. Fiberglass insulation is energy efficient affordable easy to install and readily available in a wide variety of sizes types and r values.

Measure the depth of the existing insulation between the ceiling joists in the attic. We ll walk you through the steps to help you find the right type of fiberglass attic insulation and the right amount. The most common materials are fiberglass cellulose and rock wool. Loose fill or batt the common term for blanket insulation.

If installing fiberglass mats start by laying the mats at the furthest point from the attic access. It s budget friendly and newer products don t irritate the skin and lungs. In this video this old house general contractor tom silva and host kevin o connor explain how to insulate an attic. The facing has a tab called a flange running along each side edge of the insulation.

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. Expert advice on how to install fiberglass insulation including methods for insulating walls floors ceilings attics and more. There are many different ways to install insulation. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.