Using Foil In Attic

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

Using foil in 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. 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 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. Laughable isn t a very quantifiable term.

In the absence of a foil insulation barrier the underside of the roof radiates all the heat directly into the attic. Do not push the foil down into the attic insulation. Carefully roll the foil open so that its beginning edge is directed at the attic s corner. Continue to roll the foil until it is completely laid.

The foil is applied to the plywood and then laid face down toward the attic space as it is installed. Place the rolled foil in one corner of the attic. So just lay it out nice and easy.