Prices for many materials used in door, window and glass manufacturing fluctuated in October, according to the latest producer price index (PPI) from the U.S. Bureau of Labor Statistics (BLS). In most cases, indexes are down slightly from the months prior, but higher on a year-over-year basis—by as much as 10 percent in some cases.

The monthly PPI for flat glass in the commodity category is down 0.1 percent from the previous month, and fell 0.1 percent compared to October 2017.

In the industry classification for flat glass manufacturing, the index dropped 0.4 percent from September 2018, but is up 5.6 percent from October 2017. Industry classifications measure “changes in prices received for the industry’s output sold outside the industry (that is, its net output).”

Prices for fabricated, structural metal products grew 0.7 percent from the previous month, and are up 8.8 percent from October 2017. Ornamental and architectural metal product manufacturing, in the industry category, saw no change from September, and is up 10.3 percent from this time last year.

The PPI for metal door and window manufacturing is down 0.7 percent from September, and is up 7.5 percent from October 2017’s report.

Prices for wood window units remained the same for the third month in a row, but are up 4 percent compared to October 2017. Prices for wood doors for interior and exterior applications also remained the same. They’re up 8.7 percent since last year.

The price of thermoplastic resins and plastic materials rose 0.2 percent in October and is up 4.6 percent from last year. Fiberglass plastic product prices are down 0.1 percent since last month and are 4 percent higher for the year.

The cost of builders’ hardware, which includes hardware used in doors and windows, fell 0.3 percent from the previous month. That price is 3.3 percent higher than in October 2017.

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