DIY Project: Pouring Concrete into a Rail Mold

DIY Project: Pouring Concrete into a Rail Mold

Are you looking to add a touch of modern elegance to your outdoor space? Pouring concrete into a rail mold is a fantastic DIY project that can transform the look of your deck or patio. In this article, we will provide step-by-step instructions on how to create your own concrete railings, along with tips on how to achieve a professional finish. Get ready to impress your guests with this stunning addition to your home!

Materials Needed for Pouring Concrete into a Rail Mold

Concrete mix

  • Make sure to use a high-quality concrete mix that is suitable for the project. The concrete mix should be able to withstand the pressure and weight of the rail mold once it’s poured in.

Rail mold

  • The rail mold is essential for creating the shape and structure of the concrete rail. Make sure to choose a sturdy and durable rail mold that can withstand the weight of the concrete mix.


  • Water is necessary for mixing with the concrete mix to create the right consistency. Make sure to follow the instructions on the concrete mix bag for the correct water-to-concrete ratio.


  • A trowel is needed for smoothing out the surface of the concrete once it’s poured into the rail mold. Make sure to have a trowel on hand to ensure a smooth and even finish.

    Preparing the Rail Mold for Concrete Pouring

Clean the rail mold

Before pouring concrete into the rail mold, it is important to ensure that the mold is clean and free of any debris. Use a brush or compressed air to remove any dust or dirt that may have accumulated on the surface of the mold.

Apply release agent

To prevent the concrete from sticking to the rail mold and making it difficult to remove once cured, it is recommended to apply a release agent. This can be a commercial release agent or a homemade mixture of vegetable oil and dish soap. Be sure to coat the inside of the mold thoroughly to ensure easy removal later on.

Secure the mold in place

Before pouring the concrete, make sure that the rail mold is securely in place to prevent any shifting or movement during the pouring process. Use clamps or weights to hold the mold in place and ensure that it is level and stable before proceeding with the concrete pouring.

Mixing and Pouring the Concrete into the Rail Mold

Prepare the concrete mix

Before pouring the concrete into the rail mold, it is important to prepare the concrete mix correctly. Start by choosing the right type of concrete mix for your project – whether it’s a high-strength mix for heavy-duty rails or a standard mix for lighter applications. Follow the instructions on the concrete mix packaging to ensure the correct water-to-concrete ratio is achieved. Use a mixing container and a mixing paddle to combine the concrete mix and water until it reaches a smooth, workable consistency.

Pour the concrete into the mold

Once the concrete mix is prepared, carefully pour it into the rail mold. Start by filling the mold halfway and then gently tap the sides to release any air bubbles. Continue filling the mold until it is completely filled with the concrete mix. Use a trowel to level off the surface and ensure that the concrete is evenly distributed throughout the mold.

Smooth out the surface

After pouring the concrete into the rail mold, it is important to smooth out the surface to achieve a clean and professional finish. Use a trowel to gently smooth the surface of the concrete, making sure to eliminate any lumps or bumps. You can also use a float to create a smooth and level surface. Allow the concrete to set and cure according to the instructions on the concrete mix packaging before removing the rail mold and enjoying your DIY concrete project.

Curing and Demolding the Concrete Rail

Cover the mold with plastic

Before allowing the concrete to cure, it is important to cover the mold with plastic. This will help retain moisture and create the ideal environment for the curing process. Make sure the plastic is secured tightly around the mold to prevent any moisture from escaping.

Let the concrete cure

Once the mold is covered with plastic, it’s time to let the concrete cure. Curing is a critical step in the process as it allows the concrete to reach its full strength and durability. Depending on the type of concrete used, curing times may vary. Be sure to follow the manufacturer’s recommendations for the best results.

Demold the concrete rail

After the concrete has cured, it’s time to demold the concrete rail. Carefully remove the plastic covering and then gently release the rail from the mold. Be sure to handle the concrete rail with care to avoid any damage. Once demolded, the concrete rail is ready for installation in your DIY project.


In conclusion, pouring concrete into a rail mold is a challenging yet rewarding DIY project that can add a unique touch to any outdoor space. By following the proper steps and taking necessary precautions, you can create a durable and aesthetically pleasing concrete rail that will enhance the overall look of your home. Whether you’re a seasoned DIY enthusiast or a beginner looking to try something new, this project is a great way to unleash your creativity and enhance your outdoor living area. So gather your materials, roll up your sleeves, and get ready to create a stunning concrete rail that will stand the test of time.