What can you do with a simple box? The flexibility of this material allows you to create numerous objects, such as corrugated cardboard shelves. These make interesting, solid shelves for placing items as you like. The idea is to reinforce the bottom and side walls of a box using sheets of cardboard cut to size and applied with vinyl glue. The boxes are secured to the wall using wall plugs: for this reason, it is necessary to reinforce the contact area of the screw with the cardboard by applying a metal washer, which is fixed with assembly adhesive.
Reinforcements and Fixing

The cardboard boxes should be assembled by removing the top closing flaps, so as to obtain a wide opening in which we will place various types of objects. To close the back, we use packaging tape.
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Reinforce the inner side surfaces of the boxes with a double layer of cardboard sheet cut to size. Repeat the operation by also covering the bottom, but using only one layer of cardboard sheet. Use small clamps when applying the sheets, which should be done with vinyl glue.
Enhance the front edge of the boxes by applying acrylic enamel with a roller, choosing the shade you prefer. To fix the boxes to the wall, use expansion wall plugs, whose screw should be inserted near the two upper inner corners of the boxes. To ensure an effective hold, avoiding grip on the less tenacious cardboard, we must reinforce the hole areas with metal washers, fixed with Millechiodi assembly adhesive.
The correct positioning of the washers on both sides is ensured by two equal wooden strips which, placed orthogonally on the corners of the box, act as spacers to identify the exact position where to drill the hole.
Tools and Materials You'll Need
- Corrugated cardboard boxes
- Vinyl glue
- Packaging tape
- Acrylic enamel paint
- Expansion wall plugs and screws
- Metal washers
- Assembly adhesive
- Small clamps
- Wooden spacer strips
- Drill
- Roller for paint
Step-by-Step Instructions
Step 1: Prepare the Boxes
Remove the top closing flaps from each cardboard box. Close the back of the box using strong packaging tape.
Step 2: Reinforce the Interior
Cut cardboard sheets to fit the inner side walls. Apply a double layer to each side using vinyl glue. Use small clamps to hold them in place while drying. For the bottom, apply a single layer of cardboard sheet.
Step 3: Paint the Front Edge
Once the glue is dry, use a roller to apply acrylic enamel paint to the front edge of the box. Choose a color that matches your wall decor for a cohesive look.
Step 4: Attach the Washers
Apply metal washers to the inside of the box at the two upper corners using assembly adhesive. These will prevent the screws from tearing the cardboard. Use wooden spacer strips to ensure the washers are positioned exactly where the screws will go.
Step 5: Mount on the Wall
Mark the screw positions on the wall through the washer holes. Drill holes, insert expansion wall plugs, and screw the boxes firmly to the wall. Consider pairing your new shelves with home improvement tools for a complete DIY project.
Creative Ideas for Your Cardboard Shelves
These versatile shelves can be used in any room. In the living room, display small plants or books alongside a comfortable sofa. In the bedroom, use them to hold a lamp and a few favorite novels near your bed. For a home office, they make great organizers for supplies above a desk.
If you're looking to expand your storage, consider adding a bookcase or display shelving unit to complement your handmade shelves. For the kitchen, these cardboard shelves can hold lightweight items like spices or tea towels near a kitchen island.
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Frequently Asked Questions
How much weight can cardboard shelves hold?
With proper reinforcement using double layers of cardboard and metal washers for the screws, these shelves can hold up to 5-10 pounds (2-4 kg) each. Avoid placing heavy items like books or large outdoor decor pieces on them.
Can I use these shelves outdoors?
Cardboard is not weather-resistant, so these shelves are best used indoors. For outdoor storage, consider a shed or greenhouse instead.
What type of paint should I use?
Acrylic enamel paint works best as it dries quickly and provides a durable finish. You can match it to your existing wall decor for a seamless look.
How do I ensure the shelves are level?
Use a spirit level when marking the screw holes on the wall. The wooden spacer strips mentioned in the instructions also help ensure consistent positioning.
Can I decorate the cardboard shelves?
Absolutely! You can cover them with decorative paper, fabric, or even mirrors for a unique look. Just be sure not to add too much weight.
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