How To Make Faux Concrete Signs

Faux concrete signs made from styrofoam are a popular choice for many applications. They offer the appearance of real concrete but are much lighter and easier to handle due to their construction from styrofoam.

To create faux concrete signs from styrofoam, here’s a general guide:

Materials needed:

  1. Styrofoam sheet or block
  2. Craft knife or hot wire cutter
  3. Sandpaper
  4. Concrete texture paint or textured spray paint
  5. Acrylic or latex paint (optional)
  6. Clear sealant or varnish (optional)
  7. Paintbrushes


  1. Start by determining the size and shape of your sign and obtain a styrofoam sheet or block that suits your requirements.
  2. Use a craft knife or hot wire cutter to cut the styrofoam into the desired shape of your sign. Take care to make precise cuts and ensure the edges are smooth.
  3. Once the basic shape is achieved, use sandpaper to refine the edges and create a smoother surface. This step helps prepare the styrofoam for the texture and paint application.
  4. Apply a concrete texture paint or textured spray paint onto the surface of the styrofoam. Follow the instructions provided by the manufacturer for the best application technique. Apply multiple coats if needed to achieve the desired texture and appearance.
  5. Allow the texture paint to dry completely according to the manufacturer’s instructions. This drying period is crucial for the texture to set properly.
  6. If desired, you can further enhance the appearance by painting the faux concrete sign with acrylic or latex paint in various shades of gray to mimic real concrete. Apply the paint using a dry brushing technique to highlight the texture. Alternatively, you can leave the sign with just the texture paint finish.
  7. Once the paint is dry, you may consider applying a clear sealant or varnish to protect the surface and enhance its durability. This step is optional but can help prolong the life of the faux concrete sign.

Remember to follow safety guidelines when working with tools and materials. It’s also essential to check local regulations for any restrictions on using styrofoam or the type of paints and sealants you plan to use.

Creating faux concrete signs from styrofoam is a creative and cost-effective way to achieve the look of real concrete without the weight and expense.