Material pair
How to Glue Concrete & stone to Metal
Use 2-part epoxy for most concrete & stone-to-metal joints. The strongest thing you can put on masonry, and how a bolt or a bracket gets anchored — but it demands the dust-free, dry surface concrete rarely gives you without work.
Best Adhesive for Concrete & stone to Metal
The strongest thing you can put on masonry, and how a bolt or a bracket gets anchored — but it demands the dust-free, dry surface concrete rarely gives you without work.
Derived from our material compatibility data.
Why 2-part epoxy Works
- Very porous with an uneven face — it drinks thin glues, so you want a thick, gap-filling adhesive. Dust is the enemy: brush and vacuum first.
- Smooth, dense, and non-porous — the glue sits entirely on the surface, so scuffing and degreasing matter more than which glue you pick.
- The strongest thing you can put on masonry, and how a bolt or a bracket gets anchored — but it demands the dust-free, dry surface concrete rarely gives you without work.
- The strongest rigid bond on a scuffed, grease-free surface.
Preparation
How to Prepare Concrete & stone and Metal for Gluing
Wire-brush and vacuum the dust out, and let any dampness dry off the surface first.
Scuff to a dull, even finish, wipe with acetone, and do not touch the face again.
Conditions
When to Use Silicone Instead
A bracket that hangs weight off a wall is loading the joint in peel, which is the direction adhesive is worst at — anchor it mechanically and let the adhesive seal the interface. Outdoors, water sitting in the gap will corrode the metal from behind long before the bond itself tires.
Alternatives
Other Adhesives That Work
For fixing a metal panel or trim across a wide area where a thick bead spans the hollows — not for a joint carrying its load through a small footprint.
It foams into the pores and locks in mechanically, which suits a rough face — the expansion means the part has to be weighted or braced while it cures.
The answer for a joint that has to move — an expansion gap, a sill, a wet edge — rather than one that has to hold.
Better when: Flexing or movement, Water immersion, Outdoor exposure
Products
Products for Bonding Concrete & stone to Metal
- Devcon 5 Minute EpoxyRapid, crystal-clear bonding on metal, glass, ceramic, wood, and rigid plastics — the benchmark fast-curing 2-part epoxy for jewelry, fine craft, and clean household break repairs.
- Gorilla 2-Part EpoxyGeneral household rigid repairs where a clear, gap-tolerant bond matters.
- J-B Weld OriginalRigid metal repairs — a cracked bracket, a stripped hole, a broken tool handle.
- J-B Weld SteelStik Epoxy PuttyHand-kneadable, non-rusting steel-reinforced epoxy putty for emergency plumbing repairs, auto components, stripped metal threads, and rebuilding missing metal/machinery sections — sets in 5 minutes and fully cures in 1 hour with 4,000 psi tensile strength.
Questions
Common Questions About Gluing Concrete & stone to Metal
- Can you glue metal to concrete?
- Yes on sound, dust-free, dry masonry and scuffed, degreased metal — the same if concrete is bedding onto a plate. 2-part epoxy is the strongest prepared contact; a bracket that sticks out still needs anchors.
- Should I use construction adhesive instead of epoxy on metal and concrete?
- Construction adhesive can bed a rough, uneven contact. Epoxy is the stronger prepared, close-fitting joint. Neither replaces anchors on a projecting load.
- Can I glue a metal bracket to concrete without anchors?
- Not for a shelf, TV mount, or anything that peels off the wall. Adhesive may seal or bed the plate; correctly selected anchors carry the load.
- Does outdoor weather change a metal-to-concrete glue joint?
- Yes. Water at an unsealed edge rusts the metal and lifts the bond. Silicone is the flexible outdoor or wet switch; keep a mechanical load path where safety matters.