Is using a radiant barrier in the attic a cost saving feature?
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Our air conditioning expert said a radiant barrier may help, but it needs to be as efficient as the best attic or wall insulation you can afford. And make sure you are buying it from an established company, not a door-to-door salesman. Otherwise, you may as well attach heavy duty aluminum foil for all the good the barrier may do.
Thanks, I am renovating a bedroom and had stripped the room to the studs. I want to make the room warm in the winter and cool in the summer.
Insulate the walls and ceiling with fiberglass insulation. Install at least 6 Mil clear plastic over the insulation as a vapor barrier. Then drywall. Radiant barrier would not do anything in your situation.
Here are specs on radiant barrier, installation, and usage.
https://energy.gov/energysaver/radiant-barriers
Make sure you tape all the seams of the plastic with the red tape to get a good seal, and get the insulation for the outlets too.
This is a low cost easy to install attic radiant barrier: http://www.AtticFoil.com