On Aug 12, 2:37 pm, firstname.lastname@example.org wrote:
They are likely driven into expanding aluminum anchors that were
driven into holes drilled in the concrete. The galvanic reaction
between the steel lag bolts and the aluminum anchors has fused them
together permanently. They will not be coming out of there without a
fight, and then the holes will not be usable afterward.
Why go through all the agony suggested in these replies? Buy a Harbor
Freight 3200 diamond hole saw and cut out the rusted bolts complete
with a neat core of concrete. Then get some stainless bolts, pop them
in the holes with some slow cure filled epoxy and replace your railing
exactly where you want it. The depth of cut on the hole saw may
require some chisel work to get you to the depth you want, but i've
seen building maintenance guys do this easily on broken off toilet
bolts, floor mounted partitions and the like. You may get more depth
with a Milwaukee carbide hole saw, $15 or so. You should be able to
cut a neat hole in ten or fifteen minutes, my guess. The pros do it in
around five. Good luck.
just be careful if the slab is in poor condition.
I had a steel railing rust, and replaced.
a couple years later my mom grabbed the railing in a wind storm, the
corners of the slab broke off, at the bolts.
my mom fell 10 feet but fortunately was ok....
you dont muck around with half ass fixes for key safety items.
one neighbor replaced her railing with a alunimum one, what a joke,
she slipped on ice and broke it off
I'm about to do what my neighbor did. Note: our front porches are
pretty low - one step from the walkway and then one step to the porch.
First, he removed the old wrought iron railing, ground down the stubs
and patched the holes.
Then he built a cedar framed railing with wrought-iron balusters. The
uprights are made of ~7 foot 4 x 4's which were sunk down to the frost
line *next* to the concrete porch. The upper and lower rails are 1 x 6
so the railing has some heft to it, as well as a surface to hold a
drink or package.
An added advantage is the six inches or so of width he gained since
the railings are off to the side.
A few plantings around the sides of the porch hide the 4x4's that run
up along side the porch.
It's a really nice look.
re: Not remotely what the OP asked about.
When the OP was asked *why* he needed to remove the bolts from the
concrete, he replied:
"I need to remove the lags to put new flanges/lag bolts in for the new
Many others have suggested that there are ways to install the new
railing without removing the bolts, such as relocating the railing or
the new flanges.
My suggestion is just one more option for installing a new railing
without the need to remove the old bolts.
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