I am building a storage "room" under an outdoor staircase. The area
around the stairs is asphalt. I want to anchor the bottom walls to the
asphalt. I do plan on liquid nails but I'd like to "pin" if with
something. I find fancy special anchors for asphalt but I don't think
something like a storage shed require anything that special. LN should
do most of the holding so maybe just Tapcons or just regular nails as
asphalt is generally pretty soft. Has anyone tried something like this
or have an opinion? Thanks.
Get some 1/2" diameter rebar. Cut 12" or 16" pieces. Sharpen one end
with a grinder. Drill 9/16" holes in base 2x4, and drive them in. I'd
suggest *treated* 2x4 for base. You might silicone around the outside of
the walls to keep water from running under them.
I've seen a lot of those huge party tents set up on asphalt. They just
drive the large tent stakes right into it. (But they use a powered
On Saturday, April 9, 2016 at 10:02:02 AM UTC-4, dpb wrote:
I'd agree with the big nails. And while he says Liquid Nails, I would
take that to really mean one of the construction adhesive products and I'd
find one that is suited for outdoor, wet locations, etc. That stuff
is really strong.
I suppose some of the latter products will last; I know what he means
but my experience (all _quite_ dated, granted) is that they didn't
retain their adhesive qualities over time -- once hardened after a few
years the joint was brittle and either fractured or one surface or the
other simply failed at the joint.
Good luck with that. Asphalt does not have the properties (uplift) to
perform the service you want. Look at parking bumpers rebared to asphalt and
see the movement.
Asphalt is not concrete, Asphalt is stone in a bituminous mixture laid upon
a stone base to resist downward pressure. Potholes form when the seal is
broken and water enters and freezes blowing it apart. If you really want it
to resist uplift you will have to drive expansion or screw anchors deep into
Well, true, but this is only a storage closet, essentially. No one will
be driving into the walls and hitting it. I figured just "gluing" the
footer to the asphalt should be good enough, however, it would be good
to pin it so it can't slide. So, I'll probably use a urethane product
as a glue and pin it with some long spike-like nails. I don't think
there is too much heaving due to weather in western NC, although there
might be some.
There is no way glue will work. You have to spike it.
But! I know you're going to ignore this but do so at your peril.
Whether you pull a permit or not you are required to call the utility locat
ion service first. If you don't, and you hit some line you didn't know was
there, you're screwed even if you're not hurt. Of course if you hit a pow
er line or gas line you may be more than screwed.
Whatever you put in will have your name on it for years. Do it right.
Didn't I just say that! I guess I'll say it again (copied and pasted
from my previous post):
"Well, true, but this is only a storage closet, essentially. No one
will be driving into the walls and hitting it. I figured just "gluing"
the footer to the asphalt should be good enough, however, it would be
good to pin it so it can't slide. So, I'll probably use a urethane
product as a glue and pin it with some long spike-like nails. I don't
think there is too much heaving due to weather in western NC, although
there might be some. "
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