How To Install Insulation In Attic

Attic insulation and ceiling insulation are discussed in this guide.

How to install insulation in attic.

If using insulation with a vapor retardant facing install the material with the vapor retardant side down. This section provides a guide on how to install insulation it covers specific information on attic insulation and ceiling insulation that will assist with proper installation to meet. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints. There are many different ways to install insulation.

Lay the batts across the ceiling joists covering the existing insulation. If installing shredded insulation fill the attic space at least 15 inches high with insulation. When rolling the insulation cut it to length using a utility knife. 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 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. If installing fiberglass mats start by laying the mats at the furthest point from the attic access. If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier. So if you re installing insulation in an attic that doesn t have any used faced insulation and put the paper side down toward the ceiling.

To install insulation batts and blankets. See install batt and roll insulation for details. The pros often use spray foam insulation or blow shredded insulation. Determine the type of insulation needed for your attic.

Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation. At the perimeter of the attic lay the insulation up to the roof rafters but keep it away from plywood roof sheathing. Commonly used for diy projects they work well in open spaces like attic floors. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace.

Batt and roll insulation and loose fill sometimes known as blown in insulation. There are two main types of insulation. Old insulation is removed and the attic space is cleaned out. Begin at a wall and work toward the center of the attic floor or the entryway carefully placing insulation between joists and ensuring a snug fit.

It covers details for installation of fiberglass and mineral wool batt insulation. Begin laying in the insulation starting at an area farthest from the attic access image 1.