April PPI Numbers Remain Strong for Glass Industry

The seasonally unadjusted prices for materials used in glass and glazing manufacturing were positive in April both compared to March 2021, and in year-over-year price changes, according to the latest Producer Price Index (PPI) from the U.S. Bureau of Labor Statistics (BLS).

In April, the monthly PPI for flat glass in the commodity category was up 0.6% and 4.0% from April 2020. According to the BLS, the commodity classification “organizes products and services by similarity or material composition, regardless of the industry classification of the producing establishment.”

The April index for flat glass manufacturing in the industry classification rose 0.1% from March 2021and 5.2% on a year-over-year basis.

The industry classification measures “changes in prices received for the industry’s output sold outside the industry (that is, its net output).”

Prices for fabricated structural metal products were up from last month’s PPI report. That index, in the commodity grouping, is up 12.7% from a year ago and up 2.8% from March. The index for ornamental and architectural metal product manufacturing, in the industry category, shot upwards, increasing 2.3% from March to April 2021 and 19.7% from April 2020.

The PPI for metal windows increased 0.2% in April and climbed 6.3% compared to the April 2020 report. The price for metal doors and frames is also up, 3.5% from March and 7.6% for the year.

The cost of builders’ hardware, including glass and glazing, remained unchanged from the March 2021 report with 0.0% and rising 2.5% over April 2020.

Monthly and Yearly Change in Glass and Glazing Material Prices

Category March 2021 to April 2021 April 2020 to April 2021
Flat Glass 0.6% 4.0%
Flat Glass Manufacturing 0.1% 5.2%
Fabricated Structural Metal Products 2.8 % 12.7%
Ornamental and Architectural Metal Work Manufacturing 2.3% 19.7%
Metal Windows 0.2% 6.3%
Metal Doors and Frames 3.5% 7.6%
Builders’ Hardware 0.0% 2.5%


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