Concrete Screws provide a
secure fixing into a wide range of materials since they are suitable for
concrete, solid red brick, stucco, hollow blocks, natural stone, etc.
Concrete
screws provide fast, secure anchoring, utilizing a hardened screw with
specially fashioned high and low threads that cut into the properly
sized hole and thread into cement. Installation is accomplished through
the use of specially designed carbide bits, and becomes an even faster
operation when used with the concrete screw drive tool. The concrete
screw system eliminates the need for plastic or lead anchors in medium
and light duty applications, and can be removed if desired without
excessive damage to the surrounding surface.
Concrete screws are
the perfect fastener for speedily anchoring light- to medium-weight
objects to concrete. Just as with any concrete anchor, you still have to
drill a hole in the concrete. But with a concrete screw, the hole can
be smaller and you don't need a separate anchor. You drive the screw
right through the material you're attaching and into the concrete.
Working with Concrete Screws
Select
a screw length to penetrate the concrete at least 1 in. Add 1 in. to
the thickness of the material you're attaching to get the minimum length
of screw needed. In hard, dense materials like concrete or stone, this
minimum 1-in. screw embedment will work fine. But for maximum strength,
use longer concrete screws, up to 1-3/4 in. embedment, in soft brick or
other less dense materials. You may have to experiment with a few
different lengths to find a screw that you can drive fully and that
holds securely.
Use flat head screws to secure window and door frames to concrete block in coastal areas