DIY to help you do insulation by yourself in most inexpensive way. See and learn how easy it is, just few quick steps to follow..
Step 1: Take Foam Panels Called “Dow Tuff
It is a closed cell foam about 2inches thick with r-value of 12.
Step 2: Measure the Wall Cavity
Using a measuring tape see exactly how big or small the piece of foam you need to cut. And make mark on your foam.
Step 3: Cut Foam Pieces
Then take a foam board to table saw and cut each piece to fit but keep in mind not to cut it real snug, cut it in a way so there is a little bit of a gap around the foam piece when it fits into wall cavity.
Step 4: Fit Foam in Wall Cavity
Now put the sized foam pieces in a wall cavity and use a great stuff foam sealant around the perimeter of it and seal it off.
Step 5: Cut the Excess Foam Sealant
Now you will see the foam sealant expands and some of it comes out, but don’t worry just take a small hand saw or a razor blade and just cut the excess.
Step 6: Put Drywall Back
And then the last step is too put your drywall back over the insulated wall cavities.