Metal fabrication shop due diligence

Due diligence on a metal fabrication shop is built around a specific set of findings that recur as deal-breakers in this sub-sector — a lapse in CWB certification, backlog that turns out to be softer than represented, environmental exposure on the yard, and warranty or back-charge liability on completed projects that never made it into the disclosure schedule. A diligence process that treats a fabrication shop like a generic manufacturing business, checking only financials and equipment, will miss exactly the findings most likely to change the price or kill the deal outright.

Verify CWB status directly, not through the seller

Confirm the shop’s CWB — Canadian Welding Bureau — company certification status and the credentials of its named certified welders directly with CWB rather than relying on the seller’s representation, since a lapse here can stop the shop from bidding structural, pressure-vessel or code-stamped work immediately on change of ownership. Where key certified welders are individuals who may not stay through the transition, confirm what a certification gap would actually cost the shop in lost bidding capacity before treating their retention as a formality, and put a key-employee retention arrangement in place before closing rather than after.

Test the backlog for what it actually is

Backlog that turns out to be soft — verbal commitments rather than signed purchase orders — is one of the more common findings that changes a fabrication-shop deal after the fact, so work through the pipeline line by line rather than accepting a single blended figure. For each item, confirm whether it rests on a signed purchase order, a blanket agreement, or an informal understanding with a general contractor or OEM, and separately confirm whether standing agreements carry change-of-control notice clauses that could affect assignment to a new owner.

Between signing and closing, watch for change

A metal fabrication shop’s backlog and customer relationships can move in the weeks between a signed letter of intent and closing — a general contractor pulls a project, a certified welder gives notice, a coating-line inspection turns up an issue. A material adverse change clause in the purchase agreement is the mechanism that addresses this risk, and a buyer’s advisor will want to understand exactly what it covers and how a genuine deterioration in backlog or certification status is treated between signing and close, rather than discovering the answer only if something actually goes wrong.

Environmental exposure on the yard and in coating operations

Yards used for metal storage or scrap handling, and any paint booth or coating line operating under a provincial air-emissions approval, both carry environmental exposure that is easy to overlook in a standard diligence checklist. Confirm the site’s environmental compliance approval status directly with the relevant provincial authority — in Ontario, the Ministry of the Environment, Conservation and Parks — and where the yard has a long operating history, consider whether a site environmental assessment is warranted before closing. Contamination discovered after the sale is a materially different problem than contamination priced into the deal.

Confirm WSIB clearance directly with the board

Request a current Workplace Safety and Insurance Board clearance certificate directly from WSIB rather than relying on the copy the seller provides, since the certificate confirms the account is in good standing and that outstanding premiums will not attach to the business after closing. Where the shop operates in a province other than Ontario, confirm which workers’ compensation authority applies and request the equivalent clearance from that board — each province runs its own regime and its own clearance process. A clearance that is more than a few weeks old by the time you close is worth refreshing, since the whole point of the document is that it reflects the account’s standing as of a specific date, not a general assurance that the shop has historically been in good standing.

Search for registered liens against the equipment

Before finalizing price, have your lawyer run a search of the personal property registry — in Ontario, the Personal Property Security Act registry, with every other province operating its own equivalent — against both the corporate seller and the specific equipment being purchased. Financed press brakes, lasers or forming equipment can carry a registered security interest that survives a change of ownership if it is not identified and dealt with before closing, meaning equipment presented to you as an owned asset may still be collateral for someone else’s loan. An undischarged registration found late is one of the more common reasons a fabrication-shop closing slips, so build the search into your timeline early rather than treating it as a closing-week formality.

Warranty exposure and building the diligence file

Completed construction-related projects can carry warranty obligations or back-charge exposure that has not yet surfaced in a claim but is disclosed nowhere in the financial statements. Work through recently completed major projects specifically, asking about any known defects, disputes or back-charges in progress, and confirm how uncollected retainage or holdbacks on those projects are reflected in the working-capital calculation, since a dispute over retainage after closing is one of the more common sources of post-sale conflict in this sub-sector. A well-organized file works through CWB status, backlog documentation, environmental approvals and warranty disclosure in that order, increasingly with AI-assisted document review handling the volume without missing an item, provided a qualified person still verifies each finding directly with the relevant registry.