Chemical Resin Anchors: When To Use Them?

Chemical Resin Anchor Fixings

What are Chemical Resin Anchors?

In some situations, the use of a traditional expanding plug, screw or anchor fixing in a structure (e.g. concrete, brick or cement) can cause splitting or cracking. This is most common when anchors are used toward the edge of the material and directly impacts the strength and efficiency of both the material and the anchor bond.

This inefficiency isn’t acceptable as anchors are supposed to possess high tensile strength to support materials and objects.

Chemical resin anchor is the term given to anchors that are not fitted in the traditional anchored method e.g. with the expansion of the anchor or the thread cutting into the surface of the hole.

Instead of the anchor holding itself against the surface, a chemical resin cures around the anchor and keeps it held in place.

When to use Chemical Resin Anchors   

If you need to fix something close to the edge of a brick or stone because you intend to hang a gate or add a small fixing, drilling and screws/bolts that expand into wall plugs can cause strength-ruining splits and cracks in the masonry.

Using anchors and fixings is all about getting the most secure fitting possible and sometimes the only way to ensure the surface stays intact is to using chemical resin.

Because it doesn’t expand or risk splitting/cracking, chemical resin anchors can also be used in weaker masonry that might crumble under the expansion of sleeve anchors and screw threads.

There are lots of benefits of using chemical resin anchors as they are more than capable of holding massive loads and their application can be fairly quick. However, correct preparation for fitting chemical resin anchors is essential.

Epoxy Resin Information

How to use Chemical Resin Anchors 

To use chemical resin and anchors together, you have to make sure you’ve made an appropriate hole to get the most strength from your fixing.

Just like sleeve anchor installation, decide where you need the fixings and make sure whatever you’re fitting will be suitably positioned with enough space.

Always make sure you know how deep you need to drill (dependent on the length of your anchor and the weight of your fitting) and ensure you are sure you won’t drill straight through because the chemical resin will simply flow straight out and you’ll be left with an unplanned hole.

If your drilled holes are likely to have voids (frequent in hollow blocks or bricks), you’ll need resin injection anchor sleeves to control the flow of resin and provide a secure fix to the substrate.

Below is a comprehensive list of the steps you should take to fit a chemical resin anchor:

  • Drill the hole(s)
  • Remove any loose material from the hole to get the best hold against a debris-free surface. Use a resin hole brush to do this. Also use a tube to blow air into the hole to get rid of more debris.
  • Using an applicator gun, inject the resin into the hole. It is important to make sure it’s mixing properly before you inject it into the holes. It’s advised to let some out first to allow it to mix. Always ensure that the nozzle width and length are correct, and make sure to slowly withdraw the nozzle, so trapped air pockets don’t happen. For deeper holes use a resin nozzle extension tube on the end of a mixer nozzle.
  • As you push the stud in the hole, twist it a few times to break any air bubbles up. It also pushes the resin into any voids in the hole. If the stud keeps pushing itself back out it may need a few more twists. All the threads should have an even covering. Add more resin if needed.
  • Once all the studs are in, you’ll have to leave them alone. How long this takes will depend on the brand of resin as well as the temperature. Resin tubes will have a guide on the label: a gel time and full cure time. Don’t put loadings on the studs until the full cure time.

Anchor Fixings Products

What Chemical Resin to use with Resin Anchors

Here at Anchor Fixings, we understand the importance of providing the most effective products and materials so everything runs smoothly on site.

That’s why we provide an assortment of resins and resin anchors to help you get the job done.

Our resin anchors are designed to support heavy loads for the long-term. Our J-Fix stud is a high tensile 8.8 grade threaded rod and comes in lengths up to 380mm and M20 sizes.

With a hex end and plain end option, the J-Fix stud is prepared to get the job done and the BZP (Bright Zinc Plated) coating keeps rusting and oxidisation at bay.

Epoxy Resins

Epoxy is a type of chemical resin, which is the overall term for the different types of resin available. These include polyester resin, epoxy acrylate resin, vinylester resin and pure epoxy resin.

Epoxy chemical resin is particularly useful for anchoring applications. It’s used in areas where a higher strength fixing is required, or where a standard ‘manual’ fixing can’t be used.

The best resin for a project can depend on the Environment. Epoxy Acrylate resin is best suited for use in dry and wet concrete. However, Vinylester resin provides fast curing, gelling and the ability to be used in corrosive environments. No matter your choice, resin is one way to make sure your fixings are strong and secure.

Want to know more about Epoxy Chemical Resin and the best time to use them? Then check out our blog post on everything you need to know.

Resin Superbond Capsule

The resin superbond capsule is a unique way of fixing resin anchors.

The pre-portioned components in the glass capsule simplify installation due to fast hardening. This makes the resin capsules particularly suitable for individual applications or overhead installations.

The resin superbond capsule can be used for heavy steel constructions, sound barriers, and tall shelving and with the short hardening time, fast work progress is still possible.

Chemical Resin Buffalo

Where to buy Chemical Resin Anchors 

At Anchor Fixings, we have all of the chemical resins, anchors and accessories you need for getting the project completed in good time and to a high standard. 

Not only do we supply high-quality products but we can deliver them straight to your site for when you need them.

So if you want the best from your next project, choose us to supply you with the best stainless steel fixings. Find out more or place an order by contacting us today on 028 9084 2373 or email [email protected]

Need more info for your fastening needs?

Check out our previous blog posts:

Sleeve Anchors: A Buyer’s Guide

Epoxy Chemical Resin – Everything You Need to Know

This article was written by Anchor Fixings Director Andy Walker.

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