What rocks Gibraltar's world? A good strong structure, that's what. The company makes and distributes products for residential and commercial construction, including metal roofing, vents, rain gutters, steel framing, and mailboxes. Gibraltar is a leading producer of metal roofing and accessories products as well as metal structural connectors including foundation anchors, anchor bolts, and foundation straps. The company operates about 45 facilities in the US, Canada, and Europe. Its building products are sold to builders, architects, and homeowners. Building materials retailer Home Depot is the company's largest customer, accounting for about 10% of overall sales.