Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical.
Did not seal attic before blowing insulation.
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.
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.
Air sealing the attic door.
Insulating your attic can significantly decrease your heating and cooling costs.
Your options for air sealing the attic door are.
Because the simplest and cheapest way to insulate an attic is to add material to the floor.
Blocking the air from leaking through the attic door is one of the most important things you can do.
Your attic door or drop down attic stairs are a major source of air leakage.
Plan to pull up the flooring and layer new insulation on top of the old.
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.
However blown insulation can create a fire hazard if it comes in contact with electrical fixtures.
Air sealing reduces the amount of moisture that that can get into the attic reducing the chance that you ll end up with a mold problem.
It s by far the largest hole in your ceiling and it s probably costing you a fortune.