Premium 20"x20"x2" Recycled Rubber Molds for Concrete - Slate Texture Wall, Column Cap, Hearthstone & Paver DIY Projects | Durable & Eco-Friendly for Landscaping, Patio & Garden Design

You can create your own hearthstones, wall caps, column caps, and pavers with Stone Master's rubber mold for concrete. The top is a stone texture and the four sides are chiseled. The finished product that you pour will be 20inch x 20inch and 2inch thick. You can also pour it thinner, if desired. No need to use release agent, so easy clean up. This professional quality mold will last you for many, many pours! The approximate size of the mold is 23inch by 23inch by 2.75inch thick. Manufactured Stone Basic Mixing Procedures Using A Pre-bagged Concrete Mix: This is one suggestion for mixing the concrete for manufactured stone. 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 (100Percent pure, no additives). These can easily be found on , 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. Cure in the molds 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 stones at 70 degrees or greater until ready.