On Mar 25, 6:41*pm, dpb wrote:
The Reverend Natural Light wrote:

On Mar 25, 2:44 pm, dpb wrote:
I've never seen that happen--must either be a poor slab or the wrong
fastener/charge. *The powder-actuated would be my first choice (but I
have one so rental isn't needed).

It was an old slab - which might have been the problem. *Some time
later I read an article that suggested not using those on concrete
more than a few years old. *It's certainly the best tool for the job,
but for the do-it-yourselfer I'd recommend a slower method based
solely on my own screwup.

I've used them on very old and very hard slabs w/ no significant
problem--I was going to modify the previous to say occasional chipping
or similar, but I don't recall any time it was anything I thought more
than a little cosmetic damage.

The only place I had real trouble one time was a very old slab w/ lots
of very large and very hard aggregate--the stone was a bear. *But,
trying to use tapcon or something similar would have been tough, too.

The biggest disadvantage I see for the DIY'er is the rental and
inexperience...

--

Do I really need to use treated lumber on the walls just because they
are in contact with the concrete ?
I understand using a piece of pressure treated lumber on the bottom,
but the studs as well ?

Thanks

Eli.