Laborers strike at CertainTeed ends with bigger raises

The strike shut down production at the company’s asphalt roof tile plant at 6350 NW Front Ave. for two and a half weeks.

Laborers strike shuts CertainTeed shingle plant

Three days after voting down a company contract offer, workers at a Northwest Portland roof shingle factory walked out and shut it down.

Laborers Local 320 settles contract at CertainTeed after one-day strike

The French-owned shinglemaker improves its bargaining offer after a walkout