21 companies, largest first.

About Building Products Stocks

The useful split here is new construction against replacement, and it decides how cyclical a company actually is. New construction follows housing starts and gets hammered in a downturn. Replacement follows the age and size of what is already installed, and a failed furnace or a leaking roof gets replaced regardless of what the economy is doing. Companies weighted toward replacement deserve better multiples and generally get them.

Codes are an underrated tailwind. What can legally go into a building is set by local rules on energy efficiency, fire, wind and seismic performance, and every tightening pushes demand toward higher-specification products without anyone selling harder. Getting written into an architect's drawings is the sale, and it sticks.

Cement and aggregates are the standouts and behave nothing like the rest. They are too heavy to transport far, so each plant serves a radius and effectively holds a local monopoly with pricing power no lighter product enjoys. Infrastructure spending flows to them directly. Everything else here reaches the customer through wholesalers and big-box retailers, which means the manufacturer does not set the final price and has to win a price increase from distribution first.

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