Sheet metal worker is a Red Seal designated trade in Canada, covering the fabrication and installation of ductwork for heating and ventilation, metal roofing and cladding, flashings, and architectural sheet metal. It is a compulsory trade in several provinces, which means in those provinces you cannot legally do sheet metal work for hire without a Certificate of Qualification (C of Q). In other provinces it is voluntary. Because compulsory status varies, the first thing to do is check your provincial apprenticeship authority for whether sheet metal is compulsory where you work. The trade is Red Seal designated, so once you hold the C of Q and pass the Red Seal exam, your credential is recognised across Canada, except in Quebec, which runs its own system.
Compulsory in several provinces: check yours first
Sheet metal worker is compulsory in several provinces and voluntary in others, and that distinction decides whether you can legally take the work at all:
- Where it is compulsory, you must hold a C of Q in the sheet metal worker trade (or be a registered apprentice working under a certified journeyperson) to do the work for hire.
- Where it is voluntary, no certificate is legally required, but the Red Seal C of Q is still the professional standard and the credential general contractors and mechanical firms screen for.
Do not assume either way. Compulsory-trade lists change, so confirm the current status with your provincial authority before you quote. The C of Q is earned through an apprenticeship of roughly four years (commonly around 7,200 hours) combining on-the-job hours with technical training, ending in the C of Q exam, with the Red Seal exam on top for interprovincial mobility.
Quebec is its own system
Quebec stands apart. Sheet metal work is performed under a CCQ competency card, and the contracting entity holds a licence from the Regie du batiment du Quebec (RBQ). A Red Seal earned in another province does not by itself let you trade in Quebec.
Where the trade overlaps HVAC
Sheet metal and HVAC sit close together. The ductwork side of heating, ventilation and air conditioning is sheet metal work, but the refrigeration and gas-fired sides are separate regulated activities with their own tickets: refrigeration is the Red Seal RAC mechanic trade, and any gas-fired appliance needs a gas technician certificate. If you fabricate and hang the ducting, you are working in your trade; the moment you connect gas or charge refrigerant, you are into someone else's regulated scope. Know where your ticket ends.
Code you work to
Ductwork and ventilation work to the mechanical provisions of the National and provincial building codes and to SMACNA-style duct construction standards adopted in the mechanical specification. Metal roofing and cladding work to the building code's prescriptive requirements for fastening, underlayment and weatherproofing. Permits and inspection apply to the mechanical and building work as it does to any trade.
Kit and start-up costs (estimates, CAD)
A solo sheet metal start can be tools plus a small shop, or you can subcontract install work and buy fabrication from a shop. Approximate ranges, so confirm current prices, and note that the 25 percent US steel and aluminium tariffs in place since March 2025 have pushed some material prices up:
- Hand tools (snips, seamers, hand brakes, rivet guns, folders): roughly $1,000 to $3,000.
- A bench shear, slip roll and a small box-and-pan brake: roughly $2,000 to $8,000 for a basic shop.
- A plasma cutter for heavier work: roughly $1,500 to $5,000.
- PPE (cut-resistant gloves, eye protection, knee pads): roughly $500 to $1,000.
- A used work van or truck: roughly $15,000 to $40,000.
- CGL insurance: roughly $2,500 to $5,000 a year.
A realistic first-year estimate lands around $25,000 to $55,000, depending on how much fabrication equipment you buy versus subcontract.
What you can charge (estimates, not fixed rates)
There is no single published national rate table for sheet metal work, so treat these as indicative ranges that vary by region and the type of work, not fixed prices. Ductwork fabrication and install is usually bid per project or per system as part of a mechanical scope, while metal roofing and cladding is priced per square foot. As a reference point, metal roofing installed commonly runs in the order of $8 to $30 per square foot depending on the system, and architectural and custom flashing work carries a higher rate than production ducting. Confirm your numbers against your local market before you quote.
Common mistakes
- Assuming the trade is voluntary where you work. It is compulsory in several provinces; working without the C of Q there is illegal.
- Crossing into gas or refrigerant scope. Connecting gas or charging refrigerant needs a separate ticket, not your sheet metal C of Q.
- Underpricing custom flashing and architectural work. Custom metal takes time and skill that production ductwork rates do not capture.
- Ignoring cut and material-handling hazards. Sheet metal edges are sharp and large panels are awkward; PPE and safe handling are not optional.
Know someone who needs this?
Keep reading
Was this guide useful?
Didn't find what you were looking for?
Spotted something wrong or out of date? Email us at hello@kilnguides.co.uk.
In crisis? 988 Suicide Crisis Helpline (call or text 988) ·