Things You'll Need

Instructions

1

Purchase all your supplies at a home and garden store.
2

Pick up the felt-tip marker and indicate on the aluminum flashing stock where you are going to cut out the pieces for the wooden planter. Make sure you mark where you are going to have the drainage hole. Make is smaller than the wood planter's whole so the wood doesn't get damaged from excess water.
3

Cut the drain holes with a hole saw or shears. Remember to make the holes slightly smaller than the planter's holes. This helps to prevent collection of water on the wood.
4

Clamp two boards on the sides of the aluminum where you indicated the sides of the liner to be. With the clamp and board, bend the aluminum sides at a 90 degree angle.
5

Place blind rivets where the aluminum overlap on the edges are to seal the liner. You can get a piece of board to support the drilling of the holes for the blind rivets.
6

Insert the liner and attached with blind rivets if necessary to keep the liner stable and immobile.