Good morning. There’s a new tariff with a date on it, and the date is close. From August 19, a wide list of Canadian building materials — cement first among them — carries an extra 50% duty. If you bid fixed-price work that uses any of it, the clock to protect your margin is running now.
Top story — A new 50% tariff on Canadian materials starts Aug 19, and cement is first in line
On July 20, the White House invoked Section 338 of the Tariff Act of 1930 to put an additional 50% tariff on a broad list of Canadian goods, effective August 19, 2026 — 30 days after the proclamation (White House fact sheet; Wiley Rein). It hits roughly $20 billion in annual imports, and the covered list is full of jobsite materials: Portland cement, paints and varnishes, plywood and veneered panels, particle board, MDF, wood moldings, doors, vinyl tile flooring, glassware, lighting fixtures, and fiber-optic cable (Wiley Rein; White House proclamation). Cement is the clearest hit — it flows into every foundation, slab and footing (Construction Dive). The importer pays the duty first, but that cost moves down the chain to distributors, contractors and owners. If your quote is older than this news, it may already be underwater.
Quick hits
”USMCA-compliant” no longer shields you. The new duties apply even to goods that qualify as originating under USMCA — the trade deal’s duty-free treatment does not exempt these products (Wiley Rein).
This stacks on top of the metal tariffs — it doesn’t replace them. Steel, aluminum and copper already under Section 232 are excluded from this action, so your copper and steel exposure is unchanged and this is added cost on other materials (Wiley Rein).
It’s a rarely used tool, so treat it as unsettled. Section 338 hasn’t been used in about 70 years; it caps tariffs at 50%, and the President can still suspend, amend or revoke it — and it isn’t final until Customs and Border Protection issues implementing instructions (Wiley Rein; Construction Dive).
The Tip — Use the next two weeks to move the risk off your books
Three moves before August 19. First, pull fresh supplier quotes on anything Canadian-sourced — cement, plywood, doors, paint — and ask in writing how long the price holds; buy or lock what you can inside the window. Second, put a materials-escalation and change-in-law clause in every open bid and contract — attorneys working this say it’s the single best way to share the risk instead of eating it (Construction Dive). Third, shorten your bid-validity period so a stale fixed-price number doesn’t hand a buyer a 50% cost jump on your dime. Don’t assume every Canadian product is covered — check the tariff classification before you reprice.
Tool watch — [Not sponsored]
The Wiley Rein alert (wiley.law) lists the covered product categories in plain language and links the actual White House proclamations — five minutes that tells you whether your cement, plywood or doors are in scope before your supplier explains it in their own favor.
That’s the callout. See you next time.
The Callout — the business brief for the trades. We label every commercial placement: [Sponsor], [Affiliate], or [Not sponsored]. Today’s Tool watch is our own honest read — no one paid for it.
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Sources: White House fact sheet: https://www.whitehouse.gov/fact-sheets/2026/07/fact-sheet-president-donald-j-trump-imposes-additional-tariffs-on-canada/ · Wiley Rein: https://www.wiley.law/alert-President-Trump-Imposes-New-50-Tariffs-on-Certain-Canadian-Imports · USTR statement: https://www.ustr.gov/about/policy-offices/press-office/press-releases/2026/july/ambassador-greer-issues-statement-president-trump-imposing-section-338-tariffs-canada · Construction Dive: https://www.constructiondive.com/news/canada-tariffs-pressure-concrete-cement/825869/