Anchoring Bolts into Walls: How Anchoring Adhesives Work
2026-07-10
Anchoring adhesives are designed for this purpose—they are poured into drilled holes to bond the bolt to the substrate, forming a single unit and replacing traditional mechanical expansion anchors.
How It Secures Bolts
Anchoring adhesives are typically based on epoxy resin, vinyl ester, or unsaturated polyester. During installation, a hole is first drilled into the substrate, the dust inside the hole is cleaned out, the adhesive is injected, and then the bolt is rotated into place. The adhesive undergoes a chemical reaction inside the hole, gradually curing and forming a tight bond between the bolt and the hole walls. Once cured, the screw is firmly anchored in the wall and can withstand tensile and shear forces.
Common Types
Epoxy-based: Offers high bond strength and resistance to aging; suitable for load-bearing structures.
Vinyl ester-based: Cures relatively quickly; suitable for low-temperature or humid environments.
Unsaturated polyester-based: Relatively cost-effective; used for general fastening applications.
Step-by-Step Installation
Drilling: Select a drill bit based on the anchor’s size, ensuring the hole depth and diameter match.
Cleaning the Hole: Use a brush and air blower to remove dust and keep the hole dry.
Injecting Adhesive: Inject the adhesive from the bottom of the hole outward, filling it to about two-thirds full.
Insertion: Rotate the anchor as you insert it to ensure it is evenly coated with the adhesive.
Curing: Wait according to the instructions; do not shake or apply load during this period.
Next:
More Products
The products cover silicone, acrylic, epoxy, MS, PU foam, Nail-free, etc. Products are widely used in construction, photovoltaic, electric power, automotive, industrial sealing and other fields.
