Waterproofing is a method by which an item is made resistant to damage by water. In order for the structure to be durable, strong, and long-lasting, part of it must have a waterproofing system to avoid corrosion and deterioration. This study aimed to produce an environmental friendly, cost-efficient, and easy-to-prepare waterproofing system using plant fibers. Experimental method was used, namely the leak test, to determine whether the plant fibers could be used as a viable substitute for the commercial waterproofing membrane. The samples were then tested for one week (7 days, 168 hours) to determine their respective volume discharges. The results were gathered and the necessary data and graphs were shown to better visualize the results. A t-test was also utilized in order to find out the significant difference of the three waterproofing membranes. These were then compared to evaluate which waterproofing is more suitable. The t-test results revealed that the plant fibers as waterproofing membrane could be a viable replacement for the commercial waterproofing membrane.