Using Foil In Attic

So almost 4 years ago june 2010 we put out a blog post offering a free roll of insulation for anyone who would share details of insulating an attic with reynolds wrap kitchen foil.

Using foil in attic. The foil works best and is most effective if there is about a 1 2 gap between the foil and the top of the insulation. Carefully roll the foil open so that its beginning edge is directed at the attic s corner. The attic overheats the house becomes warmer and your air conditioning bill. Laughable isn t a very quantifiable term.

Do not push the foil down into the attic insulation. Continue to roll the foil until it is completely laid. In the absence of a foil insulation barrier the underside of the roof radiates all the heat directly into the attic. This application leaves the foil with an air gap the attic space so the foil works to block radiant heat from emitting emissivity into the attic space and ultimately the home.

So just lay it out nice and easy. In fact a florida solar energy center study which compared different roofing materials with various venting ratios and with or without radiant barrier systems rbs found that a black shingled roof vented at 1 300 vent area to ceiling area with an rbs had a 6 1 reduction in attic temperature at design maximum summer conditions and a 26 4. The foil is applied to the plywood and then laid face down toward the attic space as it is installed.