Building a Deck Pond With Bricks

Location

• First you'll need to pick a location for your deck pond then place a level flat against the deck to check for level. If the deck slopes or has warped boards, sand the wood flush with an electric sander. Check the level against the deck once you finish sanding. The best locations for a deck pond are those that get natural sunlight every day. The sun prevents algae from growing in the water.

Brick and Mortar

• Decide on the shape of your deck pond. Any design works, including round or rectangular. Arrange a single layer of bricks on the deck in the size and shape you want then mix powdered mortar with water until it resembles thick peanut butter. A 1/2-inch layer of mortar is then added to the bottom and sides of each brick to keep the bricks firmly attached. Follow the same process for creating additional layers, adding more mortar to the top of each layer. Additional mortar applied to the inside of the pond will fill in any gaps between the bricks. Avoid bumps that might damage the liner by wiping off any excess mortar on the inside of the pond with a flat-edge trowel.

The Liner

• PVC is a lightweight and flexible material that works well as a deck pond liner. A layer of PVC liner glue is painted onto the inside of the pond and along the bottom to hold the liner in place. The PVC is flexible enough that you can pull, bend and shape the piece until it fits the pond. Slip the liner inside the pond while the glue is still wet. If the PVC overhangs the pond or you have any excess material, trim it away with a utility knife. After waiting 24 hours for the glue to dry, fill the pond with water. The liner will hold the water and prevent leaks while the brick and mortar are strong enough to support the weight of the water.

Considerations

• A preformed liner serves as a suitable replacement for a PVC liner. Made from a durable plastic material, the liner has a rigid shape that does not bend or move. A fiberglass pond form or mold is similar to a plastic design and also suitable for outdoor use. You simply place the liner on a flat surface and arrange the bricks around the sides. The liner is strong enough to sit on the deck without the wood poking holes in the material. Use mortar to keep the bricks attached firmly together and surrounding the pond.