How to Build L Bunk Beds

Written by beverlee brick
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The best method for making L-shaped bunk beds is to build a twin bed frame and a loft bed frame, then arrange them in an L shape. The two frames remain independent, which gives you greater flexibility as the needs of your room or your children change. It's also much simpler to build two frames rather than a multi-part frame that accommodates connected perpendicular beds.

Skill level:
Moderately Easy

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Things you need

  • 4 posts, 6 inches by 6 inches by 72 inches long
  • 4 posts, 6 inches by 6 inches by 18 inches long
  • 4 beams, 2 inches by 4 inches by 75 inches long
  • 4 beams, 2 inches by 4 inches by 36 inches long
  • 2 plywood sheets, 1/2 inch thick, 75 inches by 39 inches
  • 2 planks, 1 inch by 12 inches by 72 inches long
  • 2 planks, 1 inch by 12 inches by 33 inches long
  • Box of 3-inch long wood screws
  • Power saw
  • Power screwdriver with screwdriver and drill bits

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Instructions

    Mattress Frames

  1. 1

    Arrange two long beams and two short beams into a rectangle with all beams lying on their narrow sides. Place the short beams inside the long beams.

  2. 2

    Connect the rectangle using two screws per joint, driving through the edge of the long beam and into the end of the short beam.

  3. 3

    Lay a plywood sheet on top of the frame and attach it with one wood screw at each corner. Add a reinforcing screw at the centre of each long side of the frame.

  4. 4

    Repeat this procedure for the other mattress frame.

    Finishing the Lower Bunk

  1. 1

    Set one end of an 18-inch post in one corner of the frame, on the same side as the exposed beams.

  2. 2

    Screw the post in place with four screws, one for each corner of the beam.

  3. 3

    Repeat his procedure to attach the other three 18-inch posts to the other three corners.

    Finishing the Upper Bunk

  1. 1

    Set one end of a 72-inch post in one corner of the frame, on the same side as the exposed beams. Screw it in place with four screws, one for each corner of the beam.

  2. 2

    Attach the other four long posts to the other four corners, screwing them in place as you did the first one.

  3. 3

    Connect two posts along one long side of the bunk using one of your 72-inch planks. Position the plank so the top is one foot below the bottom of the mattress frame. Screw it in place using four screws on each side.

  4. 4

    Add a second long plank along the same side of the bed, positioning it so the bottom is one foot above the floor. Screw it in place as you did the first plank.

  5. 5

    Connect two posts on one short end of the frame using a 36-inch plank, positioned so the top of the plank rests against the bottom of the 72-inch plank. Add a second plank below, with the bottom of the short plank resting against the top of the long plank.

  6. 6

    Repeat these steps for the other short end of the frame.

    Final Touches

  1. 1

    Position the top bunk frame where you want the beds to be, with the long side that has planks attached resting against a wall.

  2. 2

    Slide the bottom bunk frame into position, perpendicular to the top frame.

  3. 3

    Place a twin mattress on each bunk, and your L-shaped bunk beds are complete.

Tips and warnings

  • These plans are for bunk beds using twin mattresses. To use larger-sized mattresses, adjust your lumber measurements accordingly.

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