Fire Pit Concrete Mix

Use a compass and piece of chalk to mark a circle on the concrete measuring 3 feet in diameter.

Fire pit concrete mix.

Ensure the formwork is level and then secure it using a couple scrap 2x3 pieces of wood. Sakrete high heat mortar is a dry medium duty mortar ideal for setting masonry units in fireplaces fire pits or chimney applications such as setting clay flue liners and paring a smoke chimney chamber. The following products were featured in this technique. For my concrete fire pit with exterior dimensions of 48 and 5 thick walls here is the cut list for the 2x10 s.

Whether you want a small 3 foot enclosure for wood or a firebowl or a 4 to 5 foot party pit these liners can get you there. This specially engineered blend of specific cements and aggregates gives the mortar unique heat resistance and thermal characteristics for use in high temperature applications. The aggregates will heat up and expand and might potentially pop or explode. Each 8 2x10 yielded one of the 49 pieces and enough left over to make one of the smaller inner form pieces.

Make sure concrete fills all corners and let this layer cure for about 20 hours. Fire ready materials a big issue i see in fire pits is that they are often built only using cmus concrete blocks which are not designed for use with fire. Concrete fire pits are not difficult. Scoop up a.

Place the dry ready mix mortar in a wheelbarrow add the package recommended amount of water and stir thoroughly. It has high heat resistant characteristics and excellent strength properties. I assert that all fire pits should be lined with fire brick and fire clay mortar. Mix and pour the concrete foundation layer about 3 thick.

Walttools firepit liners are a great start to a backyard focal point. On this technique of the week jason shows you how to pour a concrete fire pit monolithically.