Radiant barrier foil

I did an inspection yesterday and found a “radiant foil barrier” on top of the cellulose insulation in the attic. I know they sell this stuff as keeping the house more energy efficient, but it doesn’t make sense to put it on top of insulation, particularly the white fluffy cellulose. I would think it would compact he insulation and reduce efficiency, Is it not a problem also with moisture?: It seems it would create a moisture barrier on top of the insulation.

Any info/advice?

That is not the way to install a reflective radiant barrier. It will trap moisture and become worthless when covered in dust. Recommend removal.


Thanks gents.

I’m late to the party but wow! how did they go through the trouble of doing all that only to be told it’s wrong? and who did it?