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Maintenance Repair
Joint Repair

If you have a large concrete slab poured somewhere, it may have been done in sections with joints in between each section. These joints usually have sealant placed in them that deteriorates over the years. It is important that these joints be maintained to prevent moisture from getting below the slab and causing future damage. Epoxy can solve this problem.

Wood joints that have come apart can also benefit from epoxy repairs. Epoxy can create an amazing bond that will last a long time. It also can help to put together complicated breaks, such as wood chairs that have had the sides or back break off completely.

How to Use Epoxy in Joint Repair

For concrete joint repair, you will need to first clean the joints thoroughly. If outdoors, you may want to first pressure wash the joint and then let it dry completely before using epoxy in the area. If indoors, a wire brush and vacuum should be used to clean the area first, so you do not have to worry about waiting for water to dry. You will then follow manufacturer’s instructions for putting the epoxy in the joint.

For wood, it depends on the joint. If there is a broken dowel, you will need to pull out the broken piece before using epoxy to put the wood back together. Epoxy can also be put in a joint, and then the joint can be clamped together while drying.

Where to Use Epoxy for Joint Repair

Epoxy can be used on deteriorated concrete joints or simply to fill in the joints for aesthetic purposes before painting. Epoxy is also excellent for use on joints that have come apart on wood items such as chairs, tables, dressers, end tables, and more.

What Types of Epoxy to Use for Joint Repair

The type of epoxy you use for joint repairs depends on the joint. For repairing concrete joints, Metzger/McGuire MM‑80 Semi‑Rigid Epoxy Joint Filler is an excellent choice. It is made to fill in concrete joints, and since it is made for industrial settings you can be sure it is long lasting. No matter what brand you go with, it is important to choose a semi-rigid epoxy, so that it does have some give as the concrete joints are made to accommodate some movement in the concrete.

When it comes to wood joints, many woodworkers like the ease of WEST System Six10 Thickened Epoxy Adhesive because it mixes the epoxy together as the epoxy is pushed out of the tube. Also, since it can be used in a caulk gun, no extra tools are needed, and it is easy to apply. Also, you may prefer to use a gel- or paste-based epoxy for wood repairs, since it adheres to the wood better under pressure. It is important to use protective tape to cover any areas around the joint, in case it squeezes out or drips in any area you don’t want epoxy.

Why Choose Epoxy over Polyurethane for Joint Repair

Many normal wood glues are made of polyvinyl acetate. This is not necessarily a bad thing, but it is not as durable as epoxy for joint repairs. Epoxy has a much stronger hold, allowing most repairs to last a lifetime. Epoxies can also handle more complex joint repairs than a simple polyurethane-based glue.This gives you many more opportunities to save wood pieces that you love or that hold sentimental value.

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