Adding A Layer Of Insulation In The Attic

Faced insulation should not be placed on top of existing insulation in the attic.

Adding a layer of insulation in the attic.

And you ll only need 19 inches of batt insulation because you need more when you use blown in. And if you put the first layer down and let s say you use like 10 inch insulation the first time and you want to put a second layer down the second layer would be unfaced and that would be laid perpendicular to the first layer. The pros charge 1 500 to 2 000 to do a 1 200 sq ft. How much does attic insulation cost.

You can do it yourself for about 500. Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120. Attic hatch or door. Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face.

Blowing attic insulation isn t hard but it s dusty sweaty work. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.

These insulation levels will keep heated air from migrating out in winter. Typically houses in warm weather states should have an r 38 insulation in the attic whereas houses in cold climates should have r 49. Blown in insulation overview. Add additional layers.

The vapor retarder on top of or between layers of insulation can trap moisture.