Nobody renovates a bathroom for the drain. It is the least visible fixture in the shower, yet it handles water, hair, soap and cleaning chemicals every day, and its material largely decides whether it still looks and works right in ten years. Here is how the main shower drain materials compare honestly: what each does well, where each falls short, and how they hold up in real Canadian homes from Vancouver to Halifax.
First, know the two parts of every shower drain
A shower drain is really two components. The drain body is the rough-in piece that connects to the plumbing under your base or tile bed. The grate or strainer is the part you see and clean. They are often made from different materials, and that is normal: a plastic body under a stainless grate is a legitimate combination. When you compare products, check both. In Canada, look for CSA or cUPC certification on the assembly, and remember that the National Plumbing Code sets the framework while your province and municipality have the final say on what an inspector will accept.
Stainless steel: the practical default
Stainless steel dominates modern grates and nearly all linear drains, and for good reason. The colour is the metal itself, not a coating, so there is no plating to wear through, and a quality grade resists corrosion for decades in a wet room.
The honest weaknesses: polished stainless shows water spots quickly, especially in hard-water regions like much of the Prairies, and lower grades can develop light surface staining over time. Brushed finishes hide both spotting and fine scratches far better. Finish variety used to be limited to silver tones, though PVD-coated stainless in matte black and brushed gold has closed that gap on better lines. Care is simple: mild cleaner, rinse well, and never let bleach-based products sit on the surface.
Solid brass: the premium standard
Brass is the traditional material for high-end drain bodies and grates. It machines precisely, so threads engage cleanly and gasket surfaces seal well, and it accepts plated and PVD finishes beautifully, which is why brass grates are the easiest to match to brushed nickel, matte black or brushed gold trim from brands like Riobel, Kalia or Aquabrass. Drain specialists such as OS&B and Mountain Plumbing build much of their better product on brass for exactly these reasons.
The honest weaknesses: brass costs more than anything else in the category, and the finish you see is a coating over the brass, so abrasive pads and harsh chemical cleaners can wear through it over the years. Finish matching across different brands is also imperfect, since one company's brushed gold rarely matches another's exactly. Watch listings carefully too: "brass finish" or "brass look" is not the same as solid brass construction.
ABS and PVC plastic: the honest budget body
Most hidden drain bodies sold in Canada are ABS or PVC, and there is nothing wrong with that. Plastic cannot corrode, it is light, it keeps costs down, and certified plastic drain assemblies are accepted across the country. Under tile or a shower base, where nobody ever sees it, plastic does its job quietly for decades.
The honest weaknesses show up in two places. First, plastic threads strip if over-tightened, so installation demands a lighter touch than metal. Second, all-plastic strainers with painted or vacuum-plated finishes age worst in the category: coatings flake and the plastic discolours. A plastic body is fine; a plastic visible grate is where budget shows. One cold-climate note: plastic turns brittle in the cold, so let January job-site materials warm up before cutting and cementing, and match your solvent cement to your pipe, since ABS and PVC are joined differently.
Zinc alloy: the one to watch for
Zinc alloy, sometimes called pot metal, appears in budget grates, strainers and pop-up assemblies. It casts easily and looks convincing on day one. The honest weakness is longevity: zinc pits, develops white corrosion and sheds its plating faster than anything else here, particularly with hard water or acidic cleaners. It can suit a short-term rental refresh, but it is the shortest-lived option in the category. Listings rarely say "zinc" outright; vague phrases like "metal construction" and a surprisingly light weight are the usual tells.
How they wear across Canada
- Hard-water regions (much of the Prairies and homes on well water): mineral spotting shows most on polished stainless and dark matte finishes. Brushed finishes hide it best.
- Coastal humidity (Vancouver Island to Halifax): quality stainless and brass are unbothered. Zinc alloy corrodes noticeably faster in consistently damp bathrooms with weak ventilation.
- Seasonal properties (cottages in Muskoka, the Laurentians, the Maritimes): winterizing matters more than material, but plastic components are the most likely casualty of a hard freeze or a knock in the cold.
- Code variation: provinces adopt and amend the National Plumbing Code on their own schedules, so confirm sizing and venting details with your local inspector.
Care and lifespan at a glance
| Material | Best trait | Honest weakness | Care |
|---|---|---|---|
| Stainless steel | No plating to wear off | Water spots on polished grades | Mild cleaner, no prolonged bleach |
| Solid brass | Precise threads, best finish matching | Cost; plated finish can wear | Soft cloth, non-abrasive cleaners |
| ABS/PVC body | Corrosion-proof and affordable | Threads strip; visible plastic ages poorly | Essentially none once installed |
| Zinc alloy | Low cost, convincing looks new | Pits and sheds plating over time | Gentle cleaning delays the inevitable |
Matching the tier to your project
For a budget renovation, a certified plastic body under a stainless grate is the smart combination: spend where you see it, save where you do not. For a mid-range project, full stainless construction, including linear drains for curbless and tiled showers, is the sweet spot of durability and price. For a premium bathroom, a solid brass body with a PVD-finished grate matched to your trim is the configuration that still looks intentional in fifteen years.
Two planning notes before you order. Your base decides your drain: shower bases come with fixed drain locations and sizes, so choose the base first and the drain to suit it. And if you are matching finishes across a whole shower, pick the drain at the same time as the rest of the fixtures. Compare materials and finishes side by side in our shower and floor drain collection, and find companion advice on bases, valves and enclosures in our buying guides library. Everything ships Canada-wide, so the same options are on the table in Calgary, Quebec City or Charlottetown.
Frequently asked questions
Are plastic shower drain bodies allowed by code in Canada?
Yes, certified ABS and PVC drain assemblies are widely accepted across Canada. Look for CSA or cUPC markings, and confirm any local amendments with your municipality, since provinces adopt plumbing code editions on different schedules.
Do stainless steel shower drains rust?
Quality stainless does not rust in normal shower use. What people sometimes see is surface staining on lower grades, mineral deposits from hard water, or corrosion caused by bleach-based cleaners left sitting on the metal. Rinse after cleaning and a good stainless grate will outlast the tile around it.
How do I match the drain finish to my faucet and shower trim?
Buy the drain from the same finish family at the same time as your trim, and favour brass or PVD stainless grates, which hold their colour best. One maker's matte black or brushed gold rarely matches another's perfectly, so keep visible metals to one or two brands.
Is a linear drain better than a round centre drain?
Neither is better, they solve different problems. A linear drain allows a single-slope floor and suits curbless, tile-in showers; a centre drain is simpler and standard on most shower bases. Material advice is the same for both: stainless or brass for the visible channel and grate.
