Removing the wallcovering to insulate the wall cavity just isn t cost effective.
Blown in insulation existing walls.
To install blown in insulation in existing walls holes are drilled at the top of each stud space usually on the exterior and material is blown in via a long flexible hose.
So if your house was built before insulating walls became standard you can potentially save a great deal of energy by insulating.
The hole is then.
Insulation in house exterior walls is one of the primary defenses against heat and energy loss.
Unfortunately however builders didn t insulate the walls of most homes built before the 1980s.
On open walls a fabric sheath is attached to studs providing a type of cage that contains blown in fiberglass not cellulose insulation in pellets.
The following article will show you how to install this type of insulation into existing walls without removing drywall blowing cellulose fibers between the studs.
For that reason blown insulation is usually the preferred choice when you have to re insulate a completed wall.