Commercial flat roofs are built to last. However, these roofing systems can still develop problems over time if not properly maintained. When issues arise, roof repair services allow businesses to continue running smoothly without costly interruptions. Roof repair is a far less expensive option than roof replacement, but only under the right conditions. For roof repair to be practical, the roof membrane should be in good shape. As flat roofs differ from pitched roofs, roof coatings are often used to create a protective barrier and extend the life of the roof.