Pine tree sap can be tapped and used to make paint and resin products. It makes a great water-proof sealant for buckets and tarps and can be used as an adhesive. Pine tree sap can also be used as stove fuel and it can be boiled and mixed with ash or sand and compressed to make concrete. Fortunately, tapping a pine tree for its sap causes no permanent damage to the tree. Here is how to tap a pine tree for its sap.