Wedge Anchor vs Chemical Anchor
Wedge anchors are quick to install and carry high loads in solid, uncracked concrete away from edges. Chemical anchors bond with resin, so they work near edges, in cracked concrete and in hollow masonry, at the cost of curing time.
Wedge anchors
A wedge anchor is hammered into a drilled hole and tightened; its clip wedges against the concrete. It is load-ready immediately and is the standard anchor fastener for machines, columns and racking.
Chemical anchors
A chemical anchor uses a resin capsule or injection cartridge to bond a threaded stud into the hole. Because it does not expand, it puts no stress on the concrete and can be placed close to edges and other anchors.
How to choose
- Solid concrete, away from edges, need it fast: wedge anchor
- Near an edge, cracked concrete or hollow block: chemical anchor
- Post-installed rebar: chemical anchor
Installation tips
Clean the hole thoroughly with a brush and pump; dust left in the hole weakens both types, and especially chemical anchors.
