Last Updated on November 2, 2022 by hassan abbas
Wedge anchors are a type of fastener that can be used to join materials with concrete. They are meant to be placed permanently and should not be used to adjoin materials to brick despite the similarities to concrete. You can shop locally for wedge anchors, but you can also purchase wedge anchors from a reliable source like Baco Enterprises online.
How Does A Wedge Anchor Work?
These fasteners work through an expansion clip that is opened up once it has been inserted into a concrete foundation. In most cases, a hole needs to be drilled using the proper diameter for the anchor body. A hammer drill will need to be used for this application as a standard drill will lack the hammering pressure needed to reliably penetrate the concrete.
The wedge anchor is then inserted into the hole with the expansion clip side facing down. The top of the anchor is struck with a hammer to drive it into the concrete and the expansion clip. This is why wedge anchors are not to be used with brick. The striking and expansion actions can affect the mortar that joins bricks together, potentially weakening the structural integrity of a brick surface.
After the anchor has been hammered in place, a washer and nut are placed atop the threaded end sticking out of the concrete with whatever material is being joined in between the concrete and the washer. The nut is tightened, pulling the anchor body upward to push open the expansion clip inside to secure the concrete, anchor, and material being affixed.
Choosing The Right Type Of Wedge Anchor
Although all expansion wedge anchors function the same, there are some differences in the coatings used to protect a wedge anchor’s alloy and structural integrity. Below is a list of some common types of wedge anchors along with their uses:
Galvanized Wedge Anchors
Galvanized alloys are used in exterior or outdoor areas where the potential for corrosion is higher. Galvanized wedge anchors, sometimes referred to as hot dip galvanized wedge anchors, can resist corrosion from freshwater sources; however, they should not be used near saltwater areas.
Zinc Plated Wedge Anchors
Zinc plating on a wedge anchor can be ideal if you need a low-cost solution for interior use. Zinc does not do well to resist corrosion due to moisture, so zinc plated wedge anchors should not be used on or near wet surfaces.
Stainless Steel Wedge Anchors
Like galvanized alloys, stainless steel can stand up to freshwater environments quite well. Stainless steel wedge anchors are a good choice for exterior areas where the potential for rust exists because of rain and other freshwater sources. In some cases, stainless steel may be more protective against corrosion than galvanized alloys.
Stainless steel can also be used in saltwater and other corrosive or harsh environments, but you need to look for wedge anchors marked as 316 stainless steel. These anchors can stand up to harsher environments and are better suited in marine applications.
Consult An Expert
If you’re unsure of the type of wedge anchor you need for a project, it’s best to consult with an expert before you begin. As stated above, wedge anchors are meant to be placed permanently, so you will want to ensure that you perform the job correctly the first time to reduce the risk of creating more work down the road. Consider local resources for guidance regarding wedge anchor selection, but expert guidance may also be available online.