I built this floating double loft bed with 2 twin mattresses for my two young boys ages 9 and 11. We wanted to elevate the bed higher than a traditional top bunk of a bunk bed to allow plenty of head room below. The goal was to avoid legs on the loft bed and maximize the floor space as much as possible. In the future we plan to add a futon below as a third bed for when friends visit.
The loft bed measures 13 feet 9 inches long (the full length of the bedroom wall) and 3 feet 6 inches wide, which is large enough to support 2 twin mattresses end to end. The minimum wall length for 2 twin mattresses end-to-end is about 12 feet since twin mattresses are each 6 feet long. There are a few inches on each end of our bed that will eventually become headboards.
Supplies That I Used:
- 22 – 2 in. x 4 in. x 92-5/8 in. Prime Whitewood Stud
- 2 –2 in. x 4 in. x 84 in. Prime Kiln-Dried Whitewood Stud (ripped in half for slat supports)
- 2 – 2 in. x 6 in. x 16 ft. Premium Kiln-Dried Heat Treated Whitewood Dimensional Lumber
- 3- 2 in. x 6 in. x 8 ft. #2 and Better Kiln-Dried Heat Treated Spruce-Pine-Fir Lumber
- 1 box of Power Pro Construction Lag Screws
- Most of a box of 2 1/2 inch Wood Screws
- Most of a box of 2 inch Wood Screws
- 8 – “L” Brackets or Angle Brackets
Tools That I Used:
- Table Saw for dado cuts (a circular saw could be used as well)
- Miter saw (circular saw could be used as well)
- Cordless Drill for all the screws
We used construction grade pine 2×6 and 2×4 pine from Home Depot. The frame is made from two 16 foot 2×6’s for the long pieces and 8 foot 2 x6’s cut in half for the end pieces and center divider between the two mattresses.
The frame of the loft bed is attached to 3 walls with these 4 inch lag bolts.
The lag bolts are screwed into every stud available on the 3 walls.
The lag bolts are also used to connect the front frame to the two side frames.
“L” brackets connect the inside of the bed frames.
The inside of each bed frame measures 76 inches by 38 1/2 inches.
Two 84 inch 2×4’s are ripped in half with a table saw to create the ledges that the bed slats are attached to. The bed slats (which are each 38 1/2 inches long) are notched out with a dado stack blade on the table saw to create a half lap joint for the slats to lay on.
22 of the slats were spaced a 2×4 width apart to complete the support that each mattress lays on. These slats were screwed to the ledge with 1 1/2 inch wood screws.
Two ladders offer a little extra support for the long 13 foot front rail.
The ladders are constructed from 6 foot 2x4s with 4 rungs, each 12 inches apart. The upright ladder rails were notched out wide enough to receive the ladder rungs for added support.
Safety rails are also constructed with 2×4’s. Each safety rail is 55 inches long and supported by 2 16 inch 2×4’s and one ladder rail. The 16 inch supports and ladder rail are notched to receive the safety rail, all are screwed together with 2 1/2 inch wood screws.
This loft bed is very safe and does not move with the two boys bouncing around on it. This was a pretty easy and fun project to build and the boys really like their new bed.
Let me know if you have any questions. Thanks for reading and watching! If you like this project please consider checking out our YouTube channel for other great How-To projects. And don’t forget to subscribe!