The latest Producer Price Index (PPI) from the U.S. Bureau of Labor Statistics (BLS) dropped recently and it shows prices for materials used in door and window manufacturing leveling out or starting to slide, not only from February to March 2024, but on a year-over-year basis as well.

In March, the monthly PPI for flat glass in the commodity category dropped—both by 0.3% from the previous month and by 0.7% compared to the previous year. According to BLS, the commodity classification “organizes products and services by similarity or material composition, regardless of the industry classification of the producing establishment.”

The index for flat glass manufacturing in the industry classification also declined, by 1% from February 2024 and 2.6% 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).”

The PPI for metal windows flat-lined from February and dropped 0.5% over the March 2023 report. Prices for metal doors and frames also clocked no change from February to March, but marks the first increase over last year where door and window manufacturing material prices are concerned, showing a change of 1.7%. Prices for wood window units followed suit, remaining stable from the previous month, while showing an increase of 3.6% on a year-over-year basis. Prices for wood doors for interior and exterior applications dropped in March 2024, down 0.2% from February, and that contributed to a decrease of 0.8% over March 2023 pricing.

The price for thermoplastic resins and plastic materials declined by 0.4% over February 2024, as well as dropping by 4.3% from March of last year. Prices for fiberglass plastic products was one of the few categories that clocked a split, with a decline of 0.2% from the previous month but increasing by 2.3% over the previous March.

The cost of builders’ hardware, which includes hardware used in doors and windows, remained solid from February to March, and rose by 0.9% from March 2023.

Monthly and Yearly Change in Door and Window Material Prices


February to March 2024

March 2023 to March 2024

Flat Glass



Flat Glass Manufacturing



Metal Windows



Metal Doors and Frames



Wood Window Units



Wood Doors



Thermoplastic Resins and Plastic Materials



Fiberglass Plastic Products



Builders’ Hardware



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