The term 'ROOFER'S NEED' is composed of three words: NAIL, TAR, and LADDER. A NAIL is a small metal fastener that is used to join two pieces of material together. TAR is a thick, black liquid that is used to waterproof roofs. A LADDER is a device used to climb up and down from higher places. Together, these three items are essential for a roofer's job, as they are used to secure the roofing material, waterproof it, and provide access to the roof.