Using Foil In Attic

So just lay it out nice and easy.

Using foil in attic.

The foil is applied to the plywood and then laid face down toward the attic space as it is installed. Continue to roll the foil until it is completely laid. Carefully roll the foil open so that its beginning edge is directed at the attic s corner. 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.

In the absence of a foil insulation barrier the underside of the roof radiates all the heat directly into the attic. The attic overheats the house becomes warmer and your air conditioning bill. Well we heard some folks were doing this installing reynolds wrap aluminum kitchen foil in their attic to block radiant heat and we wanted to learn more. Do not push the foil down into the attic insulation.

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. Your insulation has little peaks and valleys in it usually these little peaks work perfectly to keep most of the foil a little bit. 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.