Because the simplest and cheapest way to insulate an attic is to add material to the floor.
Did not seal attic before blowing insulation.
Blocking the air from leaking through the attic door is one of the most important things you can do.
However blown insulation can create a fire hazard if it comes in contact with electrical fixtures.
This is one of the main reasons that energy efficiency experts tell you to air seal the attic where the insulation will be installed and ensure bath fans are properly vented before insulating.
Your attic door or drop down attic stairs are a major source of air leakage.
Stop using your attic for storage.
Not sealing attic air leaks first no amount of insulation is going to help if you don t seal your attic properly says olson.
But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.
Not getting insulation out to the edges when you re prepping the attic use a broom handle or stick to push the existing insulation out to the edges.
Your options for air sealing the attic door are.
Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical.
Plan to pull up the flooring and layer new insulation on top of the old.
Handy homeowners can install blown in insulation in the attic.
It s by far the largest hole in your ceiling and it s probably costing you a fortune.