Concrete Bench Mold

To make a concrete bench, the cement must be poured into a mold. A variety of concrete bench molds are available for sale, or you can build a mold for a custom look.

Purchased bench molds are usually made of heavy plastic or rubber, and can be used several times. Custom-made molds can also be made at home using plywood or particleboard sides and bottom, with designs added to the base of the mold with a router. All molds must be prepared with a release agent before the concrete is poured, or the bench top will not separate from the mold.

Several things should be considered before purchasing a bench mol:

  • Is the mold the right size for the intended purpose?
  • Will the pieces, (legs and top), be easy to assemble and will they be securely fastened together after the bench is made?
  • Does the design in the top of the bench allow water to collect, which could cause the top to crack if the water freezes?

Another thing to consider is the cost. Some molds are fairly expensive, especially if they have been designed by an expert. The cost of purchasing the mold and having it shipped to your home may end up being more than the cost of a mass-produced bench you could purchase at your local landscaping supply store. The cost of the concrete itself will be a small part of the over-all cost of your bench, so the purchase of a mold may be cost-effective if you intend to make a number of benches from the same mold.

Some people have experimented with making the legs of their concrete bench out of hypertufa, a combination of cement and peat moss. This mixture is not as strong, but it can be made to grow moss for a very “organic” look. This material is not usually recommended for the bench top because it is not strong enough, even with the required reinforcement.

We are now in the process of creating a tutorial that will show how to make a custom-designed bench mold from scratch, which can be used to create a garden or park bench out of concrete. We’ll post a link to the tutorial when it’s ready.