How Install Insulation In Attic

Batt and roll insulation also called blanket insulation are designed to fit between joists and wall stud cavities.

How install insulation in attic.

Old insulation is removed and the attic space is cleaned out. Create a barrier before blowing in your insulation you ll need to create a barrier to keep the insulation from falling into areas where you don t want it like your walkway or down the attic hatch. There are many different ways to install insulation. Determine the type of insulation needed for your attic.

Commonly used for diy projects they work well in open spaces like attic floors. The pros often use spray foam insulation or blow shredded insulation. Install pieces of wood or rulers at various spots around the attic to gauge the depth of your insulation as you work. All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife.

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 installing multiple layers of insulation for optimal thermal performance install the first layer bottom layer parallel to attic framing members and flush with both bottom and top. The facing has a tab called a flange running along each side edge of the insulation. Lay the batts across the ceiling joists covering the existing insulation.

Install the second layer top layer perpendicular to attic framing members. 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. If installing shredded insulation fill the attic space at least 15 inches high with insulation. If installing fiberglass mats start by laying the mats at the furthest point from the attic access.

Installing attic insulation requires first preparing the surfaces around the attic entry to ensure that any contaminants in the attic aren t spread throughout the home. When rolling the insulation cut it to length using a utility knife. In this video this old house general contractor tom silva and host kevin o connor explain how to insulate an attic. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic.