When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic.
Puttine fiberglass batts in attic.
Blown in insulation consists of bags of fiberglass or cellulose that are chopped up and blown in to the attic or wall from a machine.
Rolls batts and loose fill.
This video will show how to insulate an attic step by step with precut batts and rolls.
You can add loose fill on top of fiberglass batts or blankets and vice versa.
These walls are of 2x4 construction with vertical unfaced fiberglass batts held in place with a thin mesh.
Following is a brief description of fiberglass insulation.
Air migrates from warmer spaces toward colder spaces and insulation is designed to help prevent or at least slow that migration.
Whether you live in a warm weather state as i do or in a cooler northern climate it s hard to stay comfortable and keep your energy bills in check if you don t have adequate insulation in the attic.
Fiberglass comes from what i ve heard one major fiberglass insulation manufacturer call a rapidly renewable resource sand.
Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation.
If you use fiberglass over loose fill make sure the fiberglass batt has no paper or foil backing.
Blown in insulation requires a professional.
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.
1 the interior walls on the backsides of these attic walls are warmer to the touch than other walls in the room.
Batt insulation take time to read this column.
It needs to be unfaced.
Before choosing blown vs.
In my garage attic i have 60 x 10 feet of vertical walls facing the hot attic space.
What is the right insulation for an attic.
I don t know about that but it s a common insulation material that works much better in the blown form than in batts.
Review the tools and supplies you ll need for the job and we can take you there.
The photo above shows an attic insulated with blown cellulose.
Fiberglass insulation composed of finely spun glass fibers is today s most popular type of residential insulation.
To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below.
When it comes to insulating your attic there are really only two types of insulation worth considering fiberglass batts or blown in insulation.
Batt insulation is available at home centers and lumberyards.
For more please see home insulation buying guide.