Unfortunately however builders didn t insulate the walls of most homes built before the 1980s.
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.
Removing the wallcovering to insulate the wall cavity just isn t cost effective.
It s cheaper and easier to create small penetrations in the wall so that the insulation can be blown in.
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.
Step 1 create access staring down a sealed wall and needing to add blown in insulation to it can seem like an impossible task and even more impossible because of the mess you.
The hole is then.