Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)

Coated ring nails are cheaper, and are intended for this purpose. You
don't want something working loose.

"Jack" wrote in news:1160677823.366237.37180
@h48g2000cwc.googlegroups.com:

Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)



My pure GUESS is no. They are hardened and can snap with movement. That
guess is based on a pro carpenter friend telling me to never use them to
"sister" things that are suppose to flex like trusses.

In article . com, "Jack" wrote:
Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)

No, not unless you're going to drill a pilot hole through the OSB for each
screw. When screwing two pieces of wood together, it's important that the
screw threads *not* bite into the first piece: that piece needs to be free to
move along the screw so that the head can draw it tight against the second
piece. That's why wood screws have a smooth shank. Otherwise, if the threads
are biting into *both* pieces at once, the screw can actually hold them a
short distance apart.

Use ring-shank nails.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

"Jack" wrote in message
ups.com...
Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)

Drywall screws are made for drywall. Anything else is a compromise at best,
and possibly a disaster. Use the right screws. Not sure what to get?
www.mcfeeleys.com

That's excellent advice....

http://www.mcfeelys.com/tech/subfloor.asp

Whoda thunk it?

"Edwin Pawlowski" wrote in message
news:6iwXg.8123$K11.7588@trndny07...

"Jack" wrote in message
ups.com...
Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)

Drywall screws are made for drywall. Anything else is a compromise at
best, and possibly a disaster. Use the right screws. Not sure what to
get? www.mcfeeleys.com

(Doug Miller) wrote in
m:

In article . com,
"Jack" wrote:
Am securing an OSB to a subflooring, will put cement board then tile
on top. Am I ok using drywall screws to secure OSB to plywood (will
also use construction adhesive)

No, not unless you're going to drill a pilot hole through the OSB for
each screw. When screwing two pieces of wood together, it's important
that the screw threads *not* bite into the first piece: that piece
needs to be free to move along the screw so that the head can draw it
tight against the second piece. That's why wood screws have a smooth
shank. Otherwise, if the threads are biting into *both* pieces at
once, the screw can actually hold them a short distance apart.

Use ring-shank nails.


Yea, that too! :-)

Doug Miller wrote:
In article . com, "Jack" wrote:
Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)

No, not unless you're going to drill a pilot hole through the OSB for each
screw. When screwing two pieces of wood together, it's important that the
screw threads *not* bite into the first piece: that piece needs to be free to
move along the screw so that the head can draw it tight against the second
piece. That's why wood screws have a smooth shank. Otherwise, if the threads
are biting into *both* pieces at once, the screw can actually hold them a
short distance apart.

Don't think you need to worry about that with OSB
or chipboard over a denser material, but you still
need a pilot hole in the subfloor (depending on
what is used for the subfloor) and the only way to
do that is to put one through OSB.


Use ring-shank nails.

Edwin Pawlowski wrote:
"Jack" wrote in message
ups.com...
Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)

Drywall screws are made for drywall. Anything else is a compromise at best,
and possibly a disaster. Use the right screws. Not sure what to get?
www.mcfeeleys.com



Isn't the obvious answer to use deck screws. But
coarse drywall screws to hold OSB to plywood
should work just fine. One would need to be
careful not to strip the hole which would occur
most of the time fore taking the head off the
screw. That isn't true if the subfloor were solid
wood.

On 12 Oct 2006 11:30:23 -0700, "Jack" wrote:

Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)


IMHO,

I've been a fan of deck screws. They bite into wood(aim instially for
the joists then the field).

Just a guess, I don't do flooring except for DIYing.

later,

tom @ www.BlankHelp.com

Doug Miller wrote:
In article . com, "Jack" wrote:
Am securing an OSB to a subflooring, will put cement board then tile on
top. Am I ok using drywall screws to secure OSB to plywood (will also
use construction adhesive)


Use ring-shank nails.

I used ring shanked nails when I put the floor in my cabin. Now years
later you can see almost every one of them show under the tile. Wish I
had used screws instead.

Bob