Prices for materials used in glass and glazing manufacturing grew across the board in September, according to the latest Producer Price Index (PPI) from the U.S. Bureau of Labor Statistics (BLS).

The monthly PPI for flat glass in the commodity category increased 0.2 percent from the previous month, and is up 2.9 percent from September 2017. 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 index for flat glass manufacturing in the industry classification increased 0.4 percent from August 2018, continuing its growth from July. It’s up 7.3 percent from September 2017. 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 grew 0.5 percent from the previous month. That index, in the commodity grouping, is up 8.3 percent for the year. Ornamental and architectural metal product manufacturing, in the industry category, saw a price increase of 0.5 percent for the month, and has experienced a 7.4-percent increase since September 2017.

The PPI for metal windows rose a modest 0.6 percent from its August level, after a 3.5-percent jump from July. It’s up 12 percent from September 2017’s report. Metal doors and frames rose 1.6 percent from August and the category is up 7.5 percent for the year.

The cost of builders’ hardware, which includes hardware used in glass and glazing, grew 2 percent in September from August, following a 0.2-percent drop last month. That price is 3.6 percent higher than in September 2017.