I’m always looking for ways to turn worn-out household stuff into something genuinely useful, especially when it can save me a trip to the store and help in the yard. This project turns old shredded nylon backpacks into a surprisingly tough DIY landscaping fabric using just one other main material, and it’s the kind of practical weekend fix I love when I want to get my garden beds under control without spending much.
If you’ve got ripped backpacks that are beyond donating and you need a weed barrier for paths, raised beds, or under mulch, this is a smart upcycling project to try. I like it for busy weeks because once it’s made and laid down, it cuts back on weeding later, which feels like a pretty great trade.
Materials
3 old nylon backpacks, about 18 to 20 inches tall each, cleaned and fully dried
Instructions
1. Cut away all zippers, buckles, straps, foam padding, and seams from the backpacks so you’re left with only the flat nylon fabric sections. Trim those sections into roughly 4-inch squares so they soften and bond more evenly.
2. Rinse the nylon pieces in warm water if they feel dusty or dirty, then let them dry completely. Starting with clean fabric helps the finished sheet bond better and last longer outdoors.
3. In a large stockpot, whisk 2 cups of cornstarch into 12 cups of water until smooth, then bring it to a gentle boil over medium heat. Stir often until the mixture turns slightly thick and glossy.
4. Add the nylon pieces to the hot mixture in batches, pressing them down with tongs so every piece gets coated. Simmer for 8 to 10 minutes until the nylon feels more pliable and the starch mixture has fully saturated the fabric.
5. Line a baking sheet or flat tray with one sheet of parchment paper, then transfer the hot nylon pieces onto it in an overlapping layer. Arrange them like shingles so there are no big gaps.
6. Place the second sheet of parchment on top, then roll firmly over the stack with a rolling pin to flatten and compress the layers together. Clip the parchment edges if needed so the sheet stays flat while it sets.
7. Let the pressed sheet cool for 30 minutes, then remove the top parchment and check for thin spots. Patch any weak areas with extra coated nylon pieces, cover again, and roll once more.
8. Dry the sheet in a warm, airy spot for 24 to 48 hours until it feels stiff, dense, and fully dry. Flip it halfway through drying so both sides cure evenly.
9. Peel away the parchment and trim the edges into the size you need for your garden bed or path. Cut X-shaped planting holes only where you want plants, which helps keep the barrier strong.
10. Lay the finished fabric over cleared soil, overlap multiple sheets by 3 to 4 inches if needed, and cover it with 2 inches of mulch or gravel to hold it in place. Once covered, it works as a heavy-duty weed barrier with much better tear resistance than many lightweight store-bought options.
Variations & Tips
Use similar nylon items: If you don’t have enough backpacks, you can mix in old nylon lunch bags, windbreakers, or reusable nylon totes, as long as you remove anything padded, rubbery, or heavily coated.
Make wider sheets: For bigger garden rows, create several panels and overlap them by a few inches when installing. I do this in my own yard because smaller pieces are much easier to dry and store.
Best spots to use it: This works well under mulch in ornamental beds, between raised beds, or under gravel pathways. I would skip using it where you plan to dig often, since repeated pulling can loosen the overlapped sections.
Don’t rush the drying: If the sheet still feels cool or flexible in the center, give it more time. In my experience, projects like this hold up much better when they dry all the way through before going outside.
Keep it weighted down: Even a sturdy sheet lasts longer when it’s covered with mulch, bark, or gravel instead of sitting exposed to direct sun. That extra cover also helps it do the actual weed-blocking job better.
Test a small batch first: Nylon fabrics vary, so boil and press one small sample before making a full sheet. It’s a simple way to check how your particular backpack fabric behaves before you commit the whole pile.