Prices for many materials used in glass and glazing manufacturing climbed again in June, according to the latest Producer Price Index (PPI) from the U.S. Bureau of Labor Statistics.

The monthly PPI for flat glass in the commodity category grew 0.7 percent from the previous month, and is up 3.2 percent from June 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 by 0.4 percent from May 2018 after a 1.2-percent drop. It’s up 7.7 percent from June 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 increased modestly by 0.9 percent from the previous month following a 2.2-percent rise from April to May. That index, in the commodity grouping, is up 8.9 percent for the year. Ornamental and architectural metal product manufacturing, in the industry category, saw a price drop of 0.1 percent for the month, but has experienced a 9.3-percent increase since June 2017.

The PPI for metal windows rose 0.6 percent from its May level, and is up 7.4 percent from June 2017’s report. Metal doors and frames rose 1.4 percent from May and are up 6.7 percent for the year.

The cost of builders’ hardware, which includes hardware used in doors and windows, fell 0.1 percent in June, after falling 0.7 percent the month before. Those prices are 1.1 percent higher than in June 2017.