Company history

Shobond began in June 1958 as Showa Kogyo, a five-man workshop in Setagaya, Tokyo, founded by the 31-year-old Ueda Akira to fabricate rigid PVC and lay pipe for petrochemical complexes. Its future arrived by accident. At Tohoku Electric’s Yakuwa dam in 1959, while lining a cracked drainage channel with vinyl sheet, the crew found that epoxy resin would bond and seal the concrete itself. Within months the company had developed its own high-strength epoxy adhesive, registered it as SHO-BOND, and begun production — pricing every product so that base and hardener mixed in whole-number ratios, because a civil-engineering site is no place for a formula that can be got wrong.

Civil engineering in Japan at the time meant building new things. Repair was not a small market; it was not a market at all, which is precisely what Ueda saw in it — an empty field that could be defined by whoever entered first and won over the public agencies that owned the structures. The company renamed itself Shobond in 1963 and registered as a contractor, so it could install what it made rather than merely sell it.

The proof came in June 1964, when the Niigata earthquake dropped the newly completed Showa Ohashi bridge and left its deck slabs riddled with cracks. The Ministry of Construction’s Public Works Research Institute, then testing Shobond’s materials, recommended them for the repair; the work was finished that winter, and follow-up surveys more than fifty years later still find the strength held. From there the company moved squarely into bridge repair — a jointly developed expansion joint trialled on the Meishin Expressway in 1965, a licence upgraded from prefectural to ministerial in 1969, and in 1970 a steel-plate bonding method that strengthened deck slabs in place, when replacement had been the only option. Being first with epoxy in civil works was also its handicap: with no track record to point to, adoption came slowly even after the University of Tokyo supplied the data.

By the mid-1970s two different companies were living inside one. The adhesive maker that had started it all sat alongside a contracting arm doing specialist civil works for public clients, and the second was where the future lay. In April 1975 Ueda split them: the manufacturing and research operations became Shobond Chemical, and the parent renamed itself Shobond Corporation — a construction company by name and by intent. Public investment was being cut back and credit tightened; his answer was not to widen the business but to narrow it, to the single field of repair, and to make in-house execution and site control the thing the company was good at.

The same month brought the man who would industrialize that choice. Higaki Shigeru, a finance executive from IHI who had handled foreign bond issues and overseas funding for its Singapore shipyard, joined as Ueda’s deputy. Around the contracting core the group added regional repair subsidiaries, a materials-procurement arm in 1976, and in 1977 a Central Technical Research Laboratory — chemistry and civil engineering under one roof, which is what let the company keep producing methods rather than merely products: tunnel joint drainage and crack-injection repair in 1979, a run of bridge-repair methods through the early 1980s.

Austerity turned out to favour it. Road budgets grew slowly through the 1980s, but the maintenance share of them rose every year — money shifting from building to keeping. In the year to June 1986 the company completed some 7,000 jobs worth $135.3M (¥23bn), at an average of roughly $17,802 (¥3m) each; about 80% of the work was on bridges and 90% of that was repair, and close to 98% of it was ordered by government — local authorities, the ministry, the highway corporations, the national railways. Most sites were executed through some 600 subcontractors, with Shobond’s own staff running procurement, scheduling and supervision. It was a structure no general contractor could make pay. In May 1987 the company listed on the second section of the Tokyo Stock Exchange, with the employee shareholding association and Ueda himself still holding a majority between them.

Listed in 1987 and promoted to the first section in 1989, Shobond then did something the rest of construction could not: it grew through the slump. Revenue rose 1.8-fold in the six years to June 1993 while the bubble deflated, because its customers were public budgets and recessions brought supplementary ones. Bridge repair was dismissed as a niche — jobs too small and too scattered to interest anyone big — and in that niche Shobond was ten times the size of the number two. In 1992 Ueda kept his own rule that a man should leave the front line at 65 and handed the presidency to Higaki, who said plainly that he had neither the founder’s authority nor a company small enough for one man to pull, and would run it by organization instead.

Then, on 17 January 1995, the Kobe earthquake collapsed elevated expressways — and left the piers Shobond had reinforced shortly beforehand undamaged. The demonstration was worth more than any sales campaign. With a branch network in all 47 prefectures and a specialist’s accumulated know-how, the company was everywhere in the recovery, and the seismic-retrofit programmes that followed nationwide took revenue to $810.6M (¥98bn) in the year to June 1997. Pier work alone grew roughly sixfold in a single half-year; the order backlog tripled past what the company could physically build. In 1996 the research laboratory moved to Tsukuba and was rebuilt as the Repair Engineering Research Institute, with full-scale test halls for proving methods on real structures.

What sustained the margins underneath was an internal system Higaki called net-profit management. Every branch office kept its own management-accounting P&L and balance sheet; its manager budgeted total costs and direct costs and owned the resulting profit, with head-office and branch overheads charged back at rates tied to the office’s own payroll — so that ¥1,000 of extra overtime landed as ¥1,300 of cost. Receivables and material stocks sat on the office’s balance sheet and carried interest, and group-made resins were questioned by the managers if they priced above the market, which kept the manufacturing side honest. Bonuses moved with results. Higaki described the outcome as “having sixty owner-managers.” It could not, however, offset the withdrawal of public investment: revenue fell 64% in seven years from the 1997 peak, and the year to June 2004 brought suspension from bidding over defective work, ¥2.99bn of extraordinary charges and a consolidated net loss of $50.6M (¥5bn), the worst in the company’s history. Ishihara Kazuhiro, president from 2005, cut fixed costs and pushed beyond roads, restoring profit by 2007.

In January 2008 the group reorganized under a holding company, Shobond Holdings, separating strategy and capital allocation from the operating businesses — construction, resins and couplings — and tidying away the overlaps between them. The restructuring ran alongside a defence against activist shareholders, several of whom had filed large-holding reports in 2005–07. What changed the industry, though, came from outside: in December 2012 the ceiling panels of the Sasago tunnel on the Chuo Expressway fell onto traffic and killed nine people. The revised Road Act of 2013 made five-yearly inspection of road structures compulsory, a national infrastructure longevity plan was drawn up, and the government named that year the first year of social-infrastructure maintenance. The market Shobond had invented for itself in 1959 had become state policy.

The budgets that followed were of a different order: a ¥5.6tn highway renewal programme from 2015, ¥7tn of emergency resilience measures from 2018, ¥15tn from 2021, and in June 2025 a first five-year national resilience plan of over ¥20tn, with explicit targets to lift bridge-repair completion from 55% to 80%. Under Kishimoto Tatsuya — a bridge designer who spent fifteen years at Kumagai Gumi before joining in 2001, and holding-company president since 2018 — the results compounded: eleven consecutive years of higher sales and profit to the year ended June 2025, an operating margin of 22.9%, net income of $100.9M (¥15bn), ROE of 14.5% and an equity ratio of 81.4%, on a payroll of barely a thousand people. With no need for the cash, the company raised its payout policy to a 60% dividend ratio and 90% total return, reaching 93.0% and a sixteenth straight year of dividend increases.

The same abundance exposed the flaw in the model. A company whose demand is almost entirely domestic public works shrinks whenever policy does, so the surplus was aimed abroad: a joint venture with Mitsui & Co. in 2019 to reach foreign infrastructure through its 124 offices in 62 countries, a Bangkok venture with SCG’s CPAC in 2020, and an equity stake in the American repair contractor Structural Technologies in 2023. In 2024 an overseas division was created inside the construction company so that Shobond’s own engineers could supervise work on site — a shift from selling materials through a partner’s channel to exporting the integrated maintenance system itself. The Thai venture turned its first profit in the year to June 2025. The question Kishimoto has set for the next phase is the old one in new form: how far the branches — overseas, and work beyond roads — can be grown without thinning the trunk.