To add insulation to the outer walls of your home, it is easiest to contact a professional about having insulation blown in. This is the least invasive method of getting the insulation into your walls. Blown in insulation can have an even higher R-value than fiberglass batting if it’s installed correctly.
There can be literally dozens of places in your home where cold air can come in, and precious warm air can escape. Windows, doors, dryer vents, and plumbing vent stacks are some examples. In areas readily accessible, you can normally feel a slight draft. Other sections of the house – such as the attic, basement or crawl space – take a little more hunting to find the spots to dam the air flow.
One of your first lines of attack on energy inefficiency is insulation. Many older homes are just not insulated to the same level that newly built homes are, both in the attic and the walls. To add insulation to your home there are a few options; you can lay bats of fibreglass insulation in your attic but the easiest way to add insulation to walls is often to have a hole cut and insulation blown into the walls.