I wanted to remake our trailers seat/bed cushions. I loosely followed some DIY step by step instruction blogs on how to make trailer cushions. Here’s what I did.
Supplies: 3 thin peg board 4×8 pieces from The Home Depot ($15/piece); seat cushion foam and upholstery fabric of your choosing (details on previous blog post), measuring tape, scissors, staple gun, 1/4″ heavy duty staples.
I measured and measured again the inside of the trailer area and the original seat cushions. I only wanted to cut once since foam and fabric are so expensive.
My husband took a skill saw and cut my measured out sizes I had marked off on the peg board. The edges don’t have to be perfectly straight it’s only for the base and structure of the cushion.

Once the boards were cut, I laid the board out on the foam and used a black marker to mark my cut lines.
Use your preferred cutting device. For my first cushion I used scissors which worked OK but I think I’m going to use a serrated knife or electric turkey carver for the rest (which is the common think used per the blogs I read). The edge of the foam is going to get a little choppy but that’s OK. The fabric covers it right up.
Next I laid the fabric down on the floor, then the foam, then the support board. Pulled the fabric taut with my husbands help and stapled away. I folded the fabric edges like a present.
And Voilà! DIY seat cushions for your trailer!