Thumbs wrote:
I'm re-flooring our basement with hardwood. It's about 600 sq feet, raised
with an old glued on carpet. I pulled up the all the carpet and a thin
layer of under carpet remains stuck to the half inch plywood. Removing
this layer looks to be like quite a painful task (I gave it a small shot
with a scraper). I'm thinking - forget it - I'll just lay down the
receiving paper directly on this under-carpet, then harness down my
hardwood from there. Should anyone talk me out of this? Do I have to
painstakingly remove this thin layer of under-carpet? I figure it's no
thicker than vapor retarder material that they sell to go underneath
hardwood floors... anybody?

I'd first question the use of hardwood below grade -- it isn't
recommended for traditional hardwood flooring products. Before
progressing, I'd get the application confirmed from the manufacturer
(and not from the kid walking the aisles at a BORG) or you might find
it doesn't perform and there's no warranty for non-approved use. Just
a caution...

Second, depends on what it really looks like which I can't see. In
general, I'd vote w/ Joe it ought to come up, but if it is only the
glue coat and very thin and more importantly, very even, probably could
"get by". Best removal strategy would probably be to rent a power
sander and use coarse grit to scrub it off...

_BUT_, (yes, another "but" ), if again you're talking conventional
hardwood strip flooring, 1/2" plywood isn't sufficent subflooring for a
nailing surface unless you can lay it perpendicular to whatever the
underlying support is and it is something suitable for nailing to. If
it's just 1x or similar and been in place on a slab for quite some
time, I wouldn't put real high odds on it still being very solid unless
the slab is unusually dry...

Overall, w/o knowing a whole lot more about the particulars, I'd be
concerned that this isn't a good choice for your basement...