It covers details for installation of fiberglass and mineral wool batt insulation.
How to install insulation in attic.
Attic insulation and ceiling insulation are discussed in this guide.
Lay the batts across the ceiling joists covering the existing insulation.
To install insulation batts and blankets.
Next any stored belongings or debris in the attic are removed and stored in a safe location that is out of the way.
If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier.
Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints.
If using insulation with a vapor retardant facing install the material with the vapor retardant side down.
The pros often use spray foam insulation or blow shredded insulation.
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.
Batt and roll insulation and loose fill sometimes known as blown in insulation.
Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation.
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.
See install batt and roll insulation for details.
If installing shredded insulation fill the attic space at least 15 inches high with insulation.
There are many different ways to install insulation.
At the perimeter of the attic lay the insulation up to the roof rafters but keep it away from plywood roof sheathing.
Whether using loose fill or batts put the vapor barrier closest to the warm side of your installation where hot moist air would get in facing the house s interior in cold climates beneath floor insulation and the attic s interior in hot climates on top of floor insulation.
Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace.
Begin laying in the insulation starting at an area farthest from the attic access image 1.
If installing fiberglass mats start by laying the mats at the furthest point from the attic access.
Batt and roll insulation also called blanket insulation are designed to fit between joists and wall stud cavities.
Determine the type of insulation needed for your attic.
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.
Commonly used for diy projects they work well in open spaces like attic floors.
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.
