Building materials: cement, aggregates, steel and glass

Lesson 3 of 3 Math checked Facts checked against sources on 1 October 2026 12 min

Building materials players, trends 2024 to 2026, and how to crack the cases

Who makes the world's cement, stone, steel bars and glass, the forces that moved the industry from 2024 to 2026, regulation basics, typical prompts, traps and drills.

Industry brief, with a one-minute summary: Building materials

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Key takeaways

Building materials cases usually ask whether to build, buy or close a plant, why profit fell, or how to cope with carbon costs.
Common traps: Treating cement as one national or world market when it is many local ones.
India's growth and consolidation: India has nearly 690 million tonnes a year of capacity.
Quarry and mining permits: limestone and stone reserves need licences that take years to win, which keeps new competitors out and makes permitted reserves valuable.
Environmental rules: limits on dust, nitrogen oxides and other emissions from kilns, and rules for quarry restoration.

Key idea

Building materials cases usually ask whether to build, buy or close a plant, why profit fell, or how to cope with carbon costs. Start with the map: which plants serve which customers, how full they are, and what each one's delivered cost is. Then check energy, because fuel and power are the biggest cash costs, and carbon, which is becoming one.

Cement production by country, 2025 (million tonnes, USGS estimates, rounded)(million tonnes)

So-what

China makes almost half the world's cement, about 1,700 of roughly 3,800 million tonnes, so its slump moves world totals. India is a distant second but growing.

Examples of building materials players by region (examples only, not a ranking)

Examples of building materials players by region (examples only, not a ranking)
Region	Cement, aggregates and concrete	Steel for construction and glass
Europe	Holcim (Switzerland), Heidelberg Materials (Germany), CRH (Ireland, listed in New York), Buzzi (Italy), Titan (Greece)	ArcelorMittal (steel); Saint-Gobain (France, glass and building products)
United States	Amrize (spun off from Holcim in 2025), Vulcan Materials and Martin Marietta (aggregates), CRH	Nucor, Steel Dynamics, Commercial Metals (rebar); Guardian Glass (a Koch company)
Middle East	Yamama Cement, Saudi Cement, Qassim Cement, Southern Province Cement (Saudi Arabia)	Hadeed (Saudi Arabia, sold by SABIC to the Public Investment Fund in 2024), Emirates Steel Arkan (UAE)
India	UltraTech Cement (Aditya Birla), Ambuja and ACC (Adani), Shree Cement, Dalmia Bharat	Tata Steel, JSW Steel; Asahi India Glass
Southeast Asia	SCG (Thailand), Semen Indonesia, Indocement (part of Heidelberg Materials), Vicem (Vietnam)	Hoa Phat (Vietnam, steel)
China and Africa	CNBM, Anhui Conch, China Resources Building Materials; Dangote Cement (Nigeria)	Large state steel groups; AGC and NSG (Japan, glass) also sell across Asia

So-what

Global names matter less than who owns the plants near the city in your case. In most regions a handful of producers supply most of the cement.

Trends 2024 to 2026 (checked 1 October 2026)

China's slump: China's cement output fell to about 1.69 billion tonnes in 2025, down about 7 percent and the lowest since 2010, as real estate investment fell about 17 percent (sources differ slightly on the exact figure). The government banned new capacity, and the national industry body expects about 500 million tonnes a year of capacity to close.
India's growth and consolidation: India has nearly 690 million tonnes a year of capacity. UltraTech passed 200 million tonnes of domestic capacity in the year to March 2026 and took control of India Cements in December 2024, while Adani's Ambuja reached 109 million tonnes and is merging the companies it bought.
Too much capacity in parts of Asia and the Gulf: Indonesia has about 122 million tonnes a year of capacity against demand of about 64 million tonnes in 2025; Vietnam had more than 120 million tonnes against domestic use under 60 million a year in mid 2024. Saudi sales rose about 10 percent to 56.2 million tonnes in 2025, yet the industry held about 44 million tonnes of clinker in stock in December 2025 (Al Rajhi Capital figures, as reported).
Carbon becomes a cost: the EU Carbon Border Adjustment Mechanism (CBAM), a carbon charge on imports, entered its definitive phase on 1 January 2026 and covers cement and steel. Free carbon allowances for EU producers in these sectors started to shrink in 2026; under the law agreed in 2023 they end in 2034, but in July 2026 the European Commission proposed stretching the phase-out to 2038, which the European Parliament and member states still have to agree. Heidelberg Materials opened the first industrial-scale carbon capture plant at a cement works, in Brevik, Norway, in June 2025, built to capture about 400,000 tonnes of carbon dioxide a year, half the plant's emissions.
The majors reshaped and earning well: Holcim spun off its North American business as Amrize on 23 June 2025. In 2025 Holcim reported a recurring EBIT margin of 18.3 percent, Heidelberg Materials an EBITDA margin of 21.8 percent and CRH an EBITDA margin of 20.5 percent, helped by price increases and cost cuts.
Trade walls for steel: the United States raised its Section 232 tariff on steel imports from 25 to 50 percent from 4 June 2025.
An energy shock in 2026: the disruption of shipping through the Strait of Hormuz from March 2026 hit supplies of petcoke, a refinery by-product many kilns burn, of which about 0.4 to 0.6 million tonnes a month passed through the strait, mostly to India. Crisil expects Indian cement makers' power and fuel costs, already 26 to 28 percent of their costs, to rise 10 to 12 percent in the year to March 2027.

Regulation basics

Quarry and mining permits: limestone and stone reserves need licences that take years to win, which keeps new competitors out and makes permitted reserves valuable.
Environmental rules: limits on dust, nitrogen oxides and other emissions from kilns, and rules for quarry restoration.
Competition law: because a few plants serve each region, authorities watch closely for price fixing and review mergers region by region, often forcing the sale of plants.
Product standards: building codes say which cement types may be used where. Allowing more blended cements, with less clinker, is one of the cheapest ways to cut carbon.
Carbon and trade: carbon prices such as the EU Emissions Trading System, carbon charges on imports such as CBAM, and tariffs or anti-dumping duties on steel and sometimes cement.

Typical case prompts and how to crack them

Building materials case prompts, the structure that comes from the goal, and the first driver to check

Building materials case prompts, the structure that comes from the goal, and the first driver to check
Prompt	Structure from the goal	First driver to check
Should a cement maker build a new plant in East Java?	Regional demand and capacity, our delivered cost against rivals, expected utilization, investment and payback	Regional capacity against demand: Indonesia already has far more capacity than it uses
An Indian cement maker sold more tonnes but earned less	EBITDA per tonne: price per tonne minus power and fuel, freight, raw materials and other costs	Power and fuel cost per tonne, then price per tonne
Should an aggregates company buy a quarry near a fast-growing US city?	Value of permitted reserves: years of reserves, tonnes a year, cash gross profit per ton, distance to customers	How many years of permitted reserves sit within easy trucking distance of the city
How should a European cement maker respond to carbon costs?	Carbon cost per tonne: clinker factor, emissions per tonne of clinker, carbon price; options and their cost per tonne saved	Carbon cost per tonne against today's margin per tonne
Should a Saudi producer export surplus clinker?	Export netback: export price minus freight and port costs, against the cash cost of the extra tonnes	Whether the netback covers the cash cost of extra output, which also lowers fixed cost per tonne
A flat glass maker's margin fell	Price per square metre, energy cost per tonne, furnace utilization, product mix	Gas cost and whether the lines ran full

So-what

Almost every prompt turns on a per-tonne number: delivered cost, EBITDA per tonne, carbon cost per tonne or netback per tonne.

Using this in a case

Ask: which product and which region? Who are the nearby plants, how far away are they, and how full is everyone? Do we sell in bags through dealers or in bulk to contractors? What fuel do we burn?
Calculate: delivered cost per tonne to each key city, EBITDA per tonne, fixed cost per tonne at different utilization levels, and carbon cost per tonne where carbon is priced.
Say: answer first, in tonnes and money per tonne, then the reason, the risk and the next step.

What a strong first answer sounds like

"Cement is heavy and cheap, so this plant really competes only with plants within a few hundred kilometres. Its profit is tonnes times EBITDA per tonne, and the biggest costs are fuel and freight. I suspect the new capacity next door has pushed our utilization down, so I would first compare our delivered cost and utilization with the two nearest plants, then check fuel cost per tonne."

Common traps

Treating cement as one national or world market when it is many local ones. Forgetting freight, which can decide who wins a city. Planning a new plant on national demand growth while ignoring idle capacity nearby. Assuming a price cut will win volume without starting a price war. Ignoring carbon costs and the clinker factor in Europe. Reaching for a generic framework instead of the real driver: start from delivered cost per tonne, plant utilization and energy cost.