Stone Master Molds Rubber Molds for Concrete, Retaining Wall Cap Mold, 17.5″ Wide at Front, 14″ Wide at Back, 10.5″ Sides, 3.75″ Deep/Thick

Retaining Wall Cap Mold, 17.5″W/Front, 14″W Back, 10.5″ Sides, 3.75″ Deep/Thick

Create your own concrete retaining wall caps with the Stone Master Molds Retaining Wall Cap Mold, built for durability, consistency, and professional results. Each finished cap measures approximately 17.5” wide (front) x 14” wide (back) x 10.5” deep x 3.75” thick, delivering a solid, rustic stone finish suitable for residential or commercial projects.

The mold itself measures approximately 21.5” (front) x 16.5” (back) x 4” thick and weighs about 18 lbs, providing the stability needed for reliable pours and uniform results.

A major advantage of Stone Master Molds is that no release agent is required. This saves time on prep and cleanup, reduces material costs, and allows for easy, clean release of face color pigments—a clear advantage over plastic, urethane, and silicone molds.

Designed for repeated use, this professional-quality mold can be poured hundreds of times, making it a cost-effective tool for contractors and a long-term investment for DIY homeowners.

Proudly made in the USA using American materials and labor.

Manufactured Stone Basic Mixing Procedures Using A Pre-bagged Concrete Mix for your Retaining Wall Cap Molds:

This is one suggestion for mixing the concrete for the Retaining Wall Cap molds. There are many other instructions available online, including videos.

BE SURE TO USE A CONCRETE MIX THAT CONTAINS PORTLAND CEMENT. We recommend Sakrete Maximizer, as it has lightweight aggregate, is high strength, and yields more product, but there are many kinds you can use. Follow the manufacturer’s instructions for mixing.

If using pigment, add desired iron oxide pigment to mixer (100% pure, no additives). These can easily be found on Amazon, etc.

In addition, a plasticizer can be added to reduce the amount of water in the mix. Pour into the molds which may already have coloring additives… NO RELEASE AGENT NECESSARY. Vibrate molds to release air bubble.

Finally, cure the Retaining Wall Cap Molds for approximately 24 hours at the minimum of 70 degrees Fahrenheit before demolding. Higher humidity is desired. Furthermore, the concrete wall cap molds can be covered with a tarp to retain more heat and humidity. Continue to cure demolded stones at 70 degrees or greater until ready.