Attic installs are multipath nightmares. Be prepared to try a number of locations and positionings until you find the sweet spot that works. Try something like this: http://www.solidsignal.com/pview.asp?p=hbu33&d=AntennaCraft-33-Element-UHF-%2F-High-Band-VHF-Outdoor-HDTV-Antenna-(HBU33)
An attic install is not as good as a true outdoor, but, compared to using an indoor antenna in a brick or stucco house, the attic antenna can work like a dream. I was shocked when I tried to used an RCA ATSC11 with an indoor antenna and could not see anything at all (with five full-power stations 9 to 15 miles away). signals were strong. It was multipath that killed it. All was bliss when I put an antenna on the attic.
If your roof is not metallic, an antenna (and an HBU33 would be a good choice) in the attic may fit the bill nicely.
Personally, if an antenna in the living room is a "1" and an outdoor antenna is a "10", an attic antenna in the right kind of attic would be an "8".
Edited by itsthemultipath! - 1/2/14 at 2:33pm