How Much Epoxy Do You Need for Pouring a River Table?

One of the biggest challenges when making a river table is determining how much epoxy is needed for the pour.

Generally, it is recommended that 5-15 gallons of epoxy be used for the desired size of the table and the dimensions of the epoxy river. It is crucial to calculate the quantity of epoxy required accurately to avoid unnecessary expenses.

This article aims to provide professional insights into the factors influencing the amount of epoxy required for pouring a river table. It offers expert tips and tricks to help you determine the appropriate quantity for your project.

How do you calculate the amount of epoxy resin needed?

Calculating the amount of epoxy resin needed for a river table can seem daunting, but it’s a simple process. Here are the steps to take:

Measure the length, width, and depth of the river

The first step is to measure the dimensions of the river that you plan to create on your table. Measure the river’s length, width, and depth with tape. Be sure to measure in inches or centimeters, as this is the unit of measurement in which epoxy resins are typically sold.

Convert the measurements to cubic inches or centimeters

To determine the volume of the river, convert the measurements to cubic inches or centimeters. This is done by multiplying the length, width, and depth together. For example, if your river is 60 inches long, 20 inches wide, and 2 inches deep, the volume would be 2400 cubic inches (60 x 20 x 2).

Calculate the amount of epoxy needed

The next step is to use a calculator to determine how much epoxy resin is needed to cover the river. Most epoxy resins have a coverage rate of around 12 square feet per gallon, with a depth of 1/8 inch.

To calculate the number of gallons of epoxy needed, divide the volume of the river (in cubic inches or centimeters) by 231 (or 1000 for centimeters) to get the volume in gallons (or liters). Then, multiply this number by the coverage rate of your chosen epoxy.

Consider extra epoxy for sealing and sanding

It’s important to remember that you’ll need additional epoxy for sealing and sanding the table after the initial pour. Typically, you’ll need an extra gallon of epoxy for every 10 square feet of surface area.

What factors affect the amount of epoxy resin needed?

When pouring a river table, one of the most important considerations is determining how much epoxy resin you’ll need for the project. The amount of epoxy you need will depend on a few key factors:

Size of the Table

Determining the appropriate amount of epoxy for a table requires careful consideration of its dimensions. The size of the table is a crucial factor that directly influences the quantity of epoxy required.

Accurately measuring the table’s length, width, and thickness is imperative to determine the exact amount of epoxy resin needed for the project.

Width and Depth of the Epoxy River

The amount of epoxy required is also affected by the width and depth of the epoxy river. The more epoxy needed, the wider and deeper the river. As a result, before calculating the amount of epoxy, it is critical to determine the desired width and depth of the river.

Type of Epoxy

Different types of epoxy have different mixing ratios and densities, which can influence how much epoxy is required. Therefore, it’s essential to consult the manufacturer’s instructions for the specific type of epoxy you’re using to determine the correct mixing ratio and the amount required for your project.

Edge Sealing

Another factor that can affect the amount of epoxy required is edge sealing. It helps prevent the epoxy from leaking through the sides of the table and can reduce the amount of epoxy needed. Therefore, it’s essential to consider edge sealing when calculating the amount of epoxy resin required for the project.

Can Thinning Epoxy Resin Affect the Amount Needed for Pouring a River Table?

Thinning epoxy resin with xylene can affect the amount needed for pouring a river table. When epoxy resin is thinned, it becomes more fluid and may require less overall material to achieve the desired thickness. However, it’s important to carefully follow instructions and consider the potential impact on curing time and strength.

What are some tips for pouring epoxy resin for a river table?

Pouring epoxy resin for a river table is not as simple as just pouring it into the riverbed and letting it cure. Here are some tips to help you get the best results for your epoxy river table:

Prepare the surface

Before you start pouring the epoxy, you need to prepare the table’s surface. Make sure it is clean, dry, and free of dust, debris, or loose particles. You can also apply a sealer or primer to the surface to ensure the epoxy adheres properly.

Use a sealant

If you’re pouring epoxy into the live edge or porous wood, you must use a sealant to keep the epoxy from seeping through. Seal the edges with masking tape or use an adhesive like shellac, epoxy, or polyurethane.

Create a dam

To prevent the epoxy from running off the table’s edges, create a dam using silicone caulk, hot glue, or modeling clay. Ensure the dam is tall enough to hold the epoxy in place but not too tall that it gets in the way of your pour.

Mix the epoxy thoroughly

It’s essential to mix the epoxy resin and hardener thoroughly, following the manufacturer’s instructions. Mix it slowly and thoroughly, scraping the sides and bottom of the mixing container to ensure all the resin and hardener are mixed in.

Pour the epoxy slowly

When pouring the epoxy, do it slowly to prevent air bubbles from forming. Pour it in a thin, even layer, and use a spreader or brush to help distribute it evenly.

Use a heat gun

To remove any bubbles that do form, use a heat gun to blow over the epoxy’s surface gently. The heat will help the bubbles rise to the surface and pop.

Let it cure

After pouring the epoxy, ensure that it is left to cure by the instructions provided by the manufacturer. The curing process may take up to 72 hours, which varies based on the brand of epoxy and the temperature and humidity of the surrounding environment. Following the manufacturer’s guidelines is recommended to ensure the epoxy cures properly.

How can you add color to the epoxy resin?

Epoxy resin for river tables is typically transparent and can be left clear, but you can also add color to create a more unique and personalized look. There are several ways to add color to epoxy resin, including:

Epoxy Pigment

To be used with epoxy resins, epoxy pigment is specially made. It is directly blended with resin and hardener and is available in various colors. Depending on the desired color intensity, the pigment amount will vary.

Mica Powder

Natural mineral mica powder can give epoxy resin a metallic or iridescent appearance. It is included in the resin and hardener mixture and is offered in various hues.

Acrylic Paint

When seeking to add color to epoxy resin, mixing it with acrylic paint is possible. Selecting a paint specifically designed to work in conjunction with epoxy resin is crucial, as certain paint types could impede the curing process.


Epoxy resin can be effectively colored with dyes, which are available in a variety of hues. These dyes can be easily incorporated into the blended resin and hardener to achieve the desired coloration.

It is essential to note adding color can affect the curing time and properties of the epoxy resin, so it is recommended to test a small batch before adding color to a large project.


Pouring a river table with epoxy resin can be a fun and rewarding DIY project. However, it’s essential to plan and prepare before starting the process. Considering factors like table size, epoxy depth, and temperature, you can accurately calculate the amount of epoxy resin needed.

It is imperative to adhere to industry best practices when mixing and pouring the resin to achieve optimal results. This includes ensuring a level surface and eliminating any potential air bubbles.

Introducing color to the epoxy resin can enhance the aesthetic appeal of your river table. Following these guidelines will allow you to create a stunning and long-lasting piece of furniture confidently.

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