How to Weatherproof Corrugated Boxes

Seal boxes before you move so they do not suffer moisture damage in transit.

Corrugated boxes are often stored in a location, such as an attic or basement, that may be susceptible to moisture. If moisture penetrates the cardboard box, it can stain or ruin the contents inside. One way to avoid getting moisture inside the box is to weatherproof both the interior and exterior. While you may purchase special corrugated cardboard boxes that already have this feature, weatherproofing will allow you to use boxes you already have at your home.

Things You'll Need

• Liquid Rubber
• Paint brush
• Paper towel

Instructions

1. Wipe the cardboard box with a dry paper towel to remove dust or dirt on its surface.

2. Dip the paint brush into a small amount of Liquid Rubber. A little Liquid Rubber will coat a sizable surface.

3. Apply the Liquid Rubber on all sides of the cardboard box with the brush, including the interior walls and base. Add more Liquid Rubber to your brush as needed.

4. Allow the cardboard box to dry for 20 to 30 minutes. To aid in the drying process, place a fan next to the cardboard box.

5. Flip the cardboard box over and apply the Liquid Rubber to the underside of the box. Allow it to dry for 20 to 30 minutes and the box will now be weatherproofed from moisture.

Tips & Warnings

• You can add foam or additional padding on the inside of the cardboard box for extra protection. Place the foam in the box after the sealant has dried.

References

• A Tech: Sanitred Waterproofing Coatings
• Russia Liquid Rubber: Zavlar