How To Install Insulation In Attic

It covers details for installation of fiberglass and mineral wool batt insulation.

How to install insulation in attic.

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. 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. 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. If installing fiberglass mats start by laying the mats at the furthest point from the attic access.

Determine the type of insulation needed for your attic. To install insulation batts and blankets. Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation. Next any stored belongings or debris in the attic are removed and stored in a safe location that is out of the way.

The pros often use spray foam insulation or blow shredded insulation. 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. Batt and roll insulation also called blanket insulation are designed to fit between joists and wall stud cavities.

Begin laying in the insulation starting at an area farthest from the attic access image 1. Batt and roll insulation and loose fill sometimes known as blown in insulation. When rolling the insulation cut it to length using a utility knife. 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.

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. If using insulation with a vapor retardant facing install the material with the vapor retardant side down. See install batt and roll insulation for details. If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier.

Commonly used for diy projects they work well in open spaces like attic floors. Old insulation is removed and the attic space is cleaned out. There are two main types of insulation. At the perimeter of the attic lay the insulation up to the roof rafters but keep it away from plywood roof sheathing.

Lay the batts across the ceiling joists covering the existing insulation. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace.