Mergers and acquisitions have been a driving force behind Carlisle’s sustained growth over our history, including 75 acquisitions in the past 30 years. In the past decade alone, we have deployed over $3.4 billion in order to build our four reporting segments. We strive to find solid companies with strong management teams. With our Carlisle Operating System (COS), we rapidly unlock the value of a new acquisition.
As evidenced by allocating nearly $1 billion into four acquisitions in 2017, including San Jamar (CFS), Arbo, Drexel Metals and Accella Performance Materials (CCM), we continue to deploy capital in pursuit of accretive M&A opportunities that are consistent with our strategic plans. In addition, the $670 million purchase of Accella was the largest acquisition in Carlisle's history, and adds a new platform for growth within the $15 billion global construction related polyurethane market.
In 2018 we continue to reshape our portfolio and build scale through acquisitions, using a disciplined approach to pursuing assets with substantial organic growth potential and opportunities for significant, measurable synergies. CCM made the first steps in expanding its metal roofing platform created with our 2017 Drexel Metals acquisition, by acquiring two small but geographically important metal roofing companies. These additions will strengthen our metal roofing business in Colorado and Florida. At CIT, to further support our Aerospace sales efforts, we acquired a small but strategic U.K. based engineering and certification firm in the second quarter that will help accelerate share gains at European aerospace customers. And consistent with our desire to add focus to our portfolio, and redeploy our capital to faster growing segments, we exited the FoodService business in the first quarter at an attractive multiple.
We structure each acquisition carefully to meet the unique needs of both parties. Our decentralized operating structure preserves the strengths and independence of each business, while our global scope offers access to a wealth of resources, support and shared learnings. This balance positions our businesses to contribute to our shared purpose in unique and meaningful ways.
By offering access to capital and capturing synergies within our existing platforms, Carlisle Companies Incorporated's focused acquisition strategy will continue to drive shareholder value.
