What is the best attic radiant barrier application?
Deck-applied radiant barriers do not work as well as applying the radiant barrier to the bottom of the roof rafters, the way our Silver Shield™ Multi-layer Radiant Barrier is installed. • Good: Deck-applied Radiant Barriers (1 airspace below the radiant barrier surface) • Better: Draped over the rafters (2 airspaces: 1 airspace above and below the radiant barrier) • Best: Attached to the bottom of the top cord of the roof truss or roof rafters (3 airspaces: one above, one below and one in-between the layers of the multi-layer radiant barrier. This application allows for the bottom of the roof rafter to be completely covered with foil.) In summary, you want as much of the roof deck covered with low-emittance materials (foil) as possible. Deck-applied and draped radiant barriers sandwich the foil between the top cord and the roof deck. This area will continue to radiate as if there were no radiant barrier. The total area of roof rafters (as compared to the total underside of the roof sur
