Can epoxy bond granite stone
Can Granite Be Effectively Bonded to Epoxy Resin?
Granite possesses a high density and durability relative to all natural stone. It is a highly sought after stone for use on countertops, floors, in building construction, and in other uses. When repairing a broken/chipped granite piece or bonding together two pieces to make a larger, new piece; one of the questions that people typically ask is: “Is it possible to use an epoxy adhesive to bond granite together?” The answer to this question is “Yes!” Epoxy is the preferred method by most granite professionals for both repairs and installations, and it creates a stronger bond than all other types of adhesive to granite.
What Is Epoxy Resin?
Epoxy refers to a two-part adhesive made from a resin and a hardener. When mixed together, the two components of epoxy react chemically with one another creating a solid, strong, durable, and chemical resistant bond. For this reason, epoxy has good bonding capabilities with dense materials such as granite.
What Is There About Epoxy That Makes It an Ideal Adhesive for Granite?
Granite is a non-porous stone and therefore poses many challenges when it comes to either bonding or repairing granite that do not apply to softer types of natural stone. Because of the following characteristics, epoxy can help overcome the challenges when working with granite.Superior Adhesive Attachment
The capacity for both granite pieces that have been bonded together by a structurally sound epoxy adhesive system, along with the mechanical to structurally sound bond between the structural epoxies that make up a granite countertop; allows for the structural interconnectivity of both granite material once placed underneath it.
– Filling Gaps
Epoxies can often be used to fill in small cracks and voids (an actual joint) between the surfaces of two granite pieces that have been placed beneath an identical granite countertop. Additionally, epoxies can be used for bonding together pieces of broken granite together in order to restore the integrity of a granite countertop that has broken edges.
– Chemical and Water Repulsion
Once an epoxy bond has been permitted to cure, it will perform outstandingly in resisting water and oils, as well as cleaning agents. Therefore, *epoxy* products are ideal for use in the kitchen and bathroom.
– Long-Term Durability
An epoxy bonded onto a granite surface will produce a bond that remains intact regardless of temperature changes and moisture exposure.
Types of Epoxy Used in Granite Bonding
The type of epoxy you choose for your granite will depend on how/where you intend to use it. Some examples include:
– Clear Epoxy: Used on edge bonding and aesthetics
– Pigmented Epoxy: Used when matching the granite to hide repair.
– Structural Epoxy: For load bearing and/or stressed connections.
– Quick-Cure Epoxy: For making quick repairs.
Overall Advantages of Epoxy over other Adhesive Types
Adhesive Type | Epoxy | Cement-based Adhesives | Silicone
Pull Strength of Adherent: High | Medium | Low
Gap Filling: Excellent | Limited | Good
Water Resistance: Excellent | Medium | Excellent
Used for structural applications: Yes | Limited | No
Due to the epoxy’s design structure and long-term durability, there are no comparable adhesives to epoxy.
Drawbacks in Using Epoxy
There are a few negatives incurred from the use of epoxies including:
– Require Official Permission for Accurate Mixing.
– Limited Time for Workability.
– Can yellow from long term UV exposure. (Use UV Resisting Epoxy).
– Difficult to remove after cured.
Important Reminders When Using Epoxy
1. Use an epoxy type that is designed for granite.
2. Color match the epoxy prior to mixing/bonding.
3. Do not overuse to minimize cleanup.
4. Work in controlled/cured conditions.
Final Comments
In order to produce a structurally sound granite installation/repair, the finest quality epoxy and application of that epoxy are required. Due to the quality of the epoxy products, in addition to their long-lasting durability and functionality, epoxy has firmly established itself as the industry standard for granite installations/repairs.
