Ladder Stair Platform DIY


A ladder platform can provide you with a safe way to use a ladder on a staircase to effectively reach a high area on a wall or ceiling in a stairwell. Once you have a ladder platform you can simply place it on your stairs and put a straight ladder on top of the platform. It is made to keep the ladder from tipping or slipping off the stairs to improve your balance.

Things You'll Need

  • Measuring tape
  • Pencil
  • Circular saw
  • 24-inch level
  • 1 by 24 by the width of your stair steps: plywood
  • 2 by 4 inches by 8 feet wood plank
  • 2-inch and 1 ¼-inch screws
  • Drill with drill bits and drivers
  • Counter sink drill bit
  • 1 by 2 inches by 8 feet wood plank
  • Use the measuring tape to measure the width of one of your stairs and subtract about 10 inches from the stair width to find your platform width, which will provide you with walking space around the platform.

  • Draw out your measured cut lines on the piece of plywood for the 24-inch length by your desired width. Cut the platform from the plywood using a circular saw.

  • Find the height of the platform legs by using the level on the top step. Place one end of the level at the stair's inner edge and let the other end hang off of the stair's outer edge. Place the measuring tape near the front edge of the third step's tread. Tread is the flat part of the stair where you step. Use the measuring tape to measure from the third step to the bottom edge of the level. Once the level is set at a level position, take the height measurement from the lower tread to the bottom of the level on the top tread.

  • Cut the legs to your measured height using the 2-by-4-inch boards.

  • Place the legs at the corners of a long side of the plywood. Take a measurement of the distance between the legs to determine the length of a support board. The support board is located on the plywood between the legs to support and stabilize them.

  • Use this length to cut a 2-by-4-inch board. Place the support board between the legs and screw it onto the plywood. Repeat this to create a second support board.

  • Use a pencil to draw the location of the legs on the plywood. Use a counter sink bit to keep the hole flat so that your screw heads are flush with the top of the platform. Drill two pilot holes into the plywood for each leg.

  • Screw the legs onto the plywood. This is the only side that will have legs.

  • Drill pilot holes through the side of the legs and towards the support board. Use 2-inch screws to screw the legs to the edges of the support board.

  • Cut 4-inch long 2-by-4-inch boards for additional leg bracing. Rest the short side on the support board running its length alongside the inner side of the legs. Screw them onto the legs.

  • Place the second support board on top of the 4-inch leg braces. Screw through the legs and into the second support board to attach it.

  • Attach 1-by-2-inch boards around the outside top edge of three side of the platform, where the legs are and on the two adjacent sides, to help lock the ladder into place. The forth side remains clear and will rest on a stair.

  • Place the ladder on top of the platform.

Tips & Warnings

  • It is important to practice ladder safety and work with another person when using these structures.

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  • Photo Credit Jupiterimages/ Images
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