Aluminum Mill-Shape Prices Rise 27.3% Year Over Year as Construction Cost Pressure Builds
Sharp increases in aluminum, steel and copper prices are adding to construction cost pressure, complicating project budgeting and procurement decisions.
New data cited by the Associated General Contractors of America show aluminum mill-shape prices were 27.3% higher year over year, while steel mill products increased 23.4% and copper and brass mill shapes rose 20.9%. The figures add a concrete price signal to an already difficult procurement environment for construction-dependent users of industrial metals, including manufacturers of building products and fabricated components. [1]
The increase is occurring alongside wider construction-cost strains. USGlass reported that new non-residential construction rose 8.9% between August 2025 and August 2026, but contractors were also confronting higher material and labour costs. AGC said these pressures were making some projects less financially viable and were contributing to owners canceling, delaying or reducing planned work. [1]
Energy and transport inputs are compounding the metals-cost picture. The August Producer Price Index data cited in the report showed diesel fuel prices up 77.8% from a year earlier, raising costs associated with equipment operation, deliveries and material handling. At the same time, glass and glass-product manufacturing prices fell 0.1% in August after a 1% gain in July, though they remained 4.5% above their August 2025 level. [1]
The reported metals gains preceded Canada’s early-September counter-tariffs, according to the article, so the data should not be read as a measurement of those new Canadian duties’ effects. The report said Canada’s retaliatory measures took effect September 8 and included higher tariffs on aluminum and steel, with certain aluminum and steel construction products from the United States subject to duties ranging from 25% to 50%. [1]
For downstream building-product markets, the price data point to continued pressure rather than a demonstrated new tariff pass-through. The article recorded year-over-year increases of 6.5% for fabricated structural metal products, 9.9% for ornamental and architectural metalwork, and 12.2% for metal windows. Those categories expose contractors, fabricators and buyers of aluminum- and steel-intensive products to elevated input and finished-goods costs, even where monthly movements were limited. [1]
This is a moderate-significance price development because AGC-reported data quantify substantial year-over-year increases in aluminum mill shapes, steel mill products and copper/brass mill shapes, with implications for construction and metal-product supply chains. The rating is not higher because the report says these increases predated the September counter-tariffs and does not establish the degree to which any specific trade measure caused or passed through into the reported prices. [1]