Calgary’s construction industry is hoping the threat of American tariffs doesn’t slow its momentum in 2025. …Bill Black, the head of the Calgary Construction Association, says when it comes to certain building materials, the tariffs could cause unrepairable damage. “Lumber suppliers selling are obviously going to feel a really significant impact on their volume that goes into the U.S.,” Black said. “The overall viability of the lumber business is based on a blend of the two markets, and if one market becomes unfeasible because of tariffs, that then puts pressure on the operating businesses. “That could impact their ability to service the Canadian market as well.” …The city has seen consecutive years of a record number of housing starts, and those in the sector don’t want to lose vital momentum. …Alberta’s forest ministry reiterated the importance of cross-border trade Friday, saying there’s still optimism a tariff-stopping solution can be found.