Blue masonry screws in a block wall?
 

Hello Group,
I was helping my nephew mount his kitchen cabinets on a block wall that
has a 1/2 inch plaster finish. He is using those blue masonry lag
screws to hold the units up. I have only used these screws in solid
caps or solid concrete, never in blocks. The screws only have the
thickness of the block wall (not certain how much that is)for thread
contact, not the entire threaded portion.
He is only using four screws per unit but I suggest six.
Who out there has used these screws in block walls and what are your
recommendations?
Thanks in advance for your responses
Marc

He sould use an anchor that expands in the hollow part of the block.
You are correct, the Tap-Con (the blue screw) can pull out of the soft thin
outer surface of the block.

"marc rosen" wrote in message
oups.com...
Hello Group,
I was helping my nephew mount his kitchen cabinets on a block wall that
has a 1/2 inch plaster finish. He is using those blue masonry lag
screws to hold the units up. I have only used these screws in solid
caps or solid concrete, never in blocks. The screws only have the
thickness of the block wall (not certain how much that is)for thread
contact, not the entire threaded portion.
He is only using four screws per unit but I suggest six.
Who out there has used these screws in block walls and what are your
recommendations?
Thanks in advance for your responses
Marc

The wall thickness of a concrete block is about one inch. If he hits
the edge of the block you have the full block depth to drill into.

I would be concerned with spot loading these types of blocks.

I have always tended to use toggle bolts but then I always tend to
overengineer.

In article .com,
wrote:

I have always tended to use toggle bolts but then I always tend to
overengineer.

I wouldn't call that over-engineering. I'd call that common sense.
Toggles are good...and cheap.
I will use a couple of tapcons to hold the unit in place while I drill a
hole right through the cabinet and block wall. I use a nice big
fender-washer.

A falling cabinet could knock over a fine wine. Who needs that?

I am one of those guys. I've never used epoxy on tapcons. I have
used epoxy sleeve anchors for substantial loads. I would not
consider kitchen uppers as a substantial load though I do work at
making the tapcons bite in the end web or center web of the
blocks.

(top posted for your convenience)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)




wrote in message
...
On 10 Sep 2005 17:47:40 -0700, "marc rosen"
wrote:

Hello Group,
I was helping my nephew mount his kitchen cabinets on a block
wall that
has a 1/2 inch plaster finish. He is using those blue masonry
lag
screws to hold the units up. I have only used these screws in
solid
caps or solid concrete, never in blocks. The screws only have
the
thickness of the block wall (not certain how much that is)for
thread
contact, not the entire threaded portion.
He is only using four screws per unit but I suggest six.
Who out there has used these screws in block walls and what are
your
recommendations?
Thanks in advance for your responses
Marc


The guys who do this for a living use epoxy in the TapCon hole
when
they are in block.