Stone Master Molds Rubber Molds for Concrete, Slate Wall Cap Mold, 24″L x 18″W x 3″D

Stone Master Molds Precast Wall Cap Mold for Concrete, 24″L x 18″W x 3″D

Craft your own premium concrete wall caps with the Stone Master Molds Precast Wall Cap Mold, engineered for both beauty and performance. This mold features a refined slate-textured top complemented by four chiseled edges, delivering a natural stone appearance that enhances any wall or landscape design.

Each pour produces a substantial wall cap measuring approximately 24″ L x 18″ W x 3″ D, offering consistent, professional results every time. The mold itself measures 27.5″ L x 21.25″ W x 3.5″ D and weighs approximately 28 lbs, providing the durability and stability needed for repeated use.

Designed with efficiency in mind, this mold requires no release agent, saving you time, labor, and material costs while ensuring a clean, effortless release—especially when working with face color pigments. Unlike plastic, urethane, or silicone alternatives, it delivers superior performance and cleaner results.

Built for longevity, this professional-grade mold is capable of hundreds of pours, making it an excellent investment for both contractors and serious DIYers.

Proudly made in the USA using domestically sourced materials and craftsmanship you can trust.

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

This is one suggestion for mixing the concrete for the Precast Wall Cap Mold. 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.

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 concrete in the Precast Wall Cap Mold for approximately 24 hours at the minimum of 70 degrees Fahrenheit before demolding. Higher humidity is desired. Molds can be covered with a tarp to retain more heat and humidity. Continue to cure demolded caps at 70 degrees or greater until ready.