Gutter Terminology by Country
The hardware that catches roof runoff is functionally identical across the English-speaking world, but five major markets settled on different names for it. If you’ve moved countries, or you’re searching with the word you grew up using, this page maps everything to everything else.
The core term, by market
| Country | Gutter | Downspout |
|---|---|---|
| United States | Gutters | Downspout |
| Canada | Eavestroughs (gutters) | Downspout |
| United Kingdom | Guttering | Downpipe |
| Australia | Gutters / guttering | Downpipe |
| New Zealand | Spouting (gutters) | Downpipe |
Canada and New Zealand both keep “gutters” as an understood secondary term. The downspout/downpipe split is cleaner than the gutter one, with no real dual usage in either direction.
Every component, named
This is the vocabulary a quote or a product listing will use, in the order water encounters it.
| Component | What it does |
|---|---|
| Drip edge | Metal flashing at the roof edge directing water into the trough rather than behind it |
| Fascia | The board along the roofline that hangers screw into |
| Soffit | The underside panel between the fascia and the wall |
| Gutter / trough | The horizontal channel itself |
| Hanger / bracket | What fastens the gutter to the fascia |
| Spike and ferrule | Older fastening method: a long nail through a sleeve |
| Hidden hanger | Modern internal bracket, screwed rather than nailed |
| End cap | Closes the end of a run |
| Mitre | The corner joint where two runs meet |
| Outlet / drop | The hole in the trough where water enters the downspout |
| Elbow | Angled fitting redirecting the downspout around eaves |
| Downspout / downpipe | The vertical pipe |
| Splash block | Shaped block dispersing water at the discharge point |
| Leader | US trade term, sometimes used for the downspout |
“Fascia” and “soffit” are used consistently in all five markets, which makes them among the few terms that never fragmented regionally.
Profiles: K-style, half-round, and box
K-style has a flat back and a decorative front face resembling crown moulding in cross-section. It dominates new US construction, holds more water than half-round of the same nominal width, and is harder to clean because debris packs into the flat bottom and the ogee curve.
Half-round is a simple semicircular trough. It’s standard on UK period properties and common on older Australian and New Zealand housing, usually chosen to match a building’s original architecture. It self-clears better than K-style precisely because there are no corners for debris to pack into.
Box gutter is a rectangular trough built into the roof structure rather than hung off the fascia, common on older US urban housing and on commercial buildings. It matters disproportionately because it fails inward: a leak goes into the roof deck or wall cavity rather than spilling visibly over an edge, so it’s often discovered as a ceiling stain long after it started.
Sizing conventions differ too
The US sizes gutters in inches, most commonly 5-inch and 6-inch K-style, with downspouts as 2x3 or 3x4 inch. Canada, the UK, Australia, and New Zealand all use metric, so the same components appear as 100mm, 125mm, or 150mm.
The rough equivalences: 5-inch is about 125mm, and 6-inch is about 150mm. They’re not exact conversions, because the profiles were designed to different standards rather than translated from one another.
Trade slang worth recognizing
UK tradespeople often call the whole system “rainwater goods,” a phrase with no real US equivalent that would puzzle most American homeowners despite describing exactly the same hardware. UK and Australian usage also includes “guttering” as a mass noun for the material itself, in a way US English doesn’t.
In US trade usage, “leader” occasionally appears for the downspout, mostly in older documentation and in the north-east.
Why the terminology varies at all
Colonial and trade history shaped this far more than any difference in how the systems work. The vocabulary diverged where local trades developed independently, and stayed common where the terms came from architecture rather than plumbing, which is why “fascia” and “soffit” survived intact everywhere while the trough itself picked up four different names.
Why this page exists
Cross-market terminology tables are surprisingly rare given how often the confusion arises. Someone searching “eavestrough cleaning cost” and someone searching “gutter cleaning cost” want the identical information, and frequently can’t find each other’s guidance.
Our country guides use each market’s own vocabulary throughout: United States, Canada, United Kingdom, Australia, and New Zealand.
Frequently asked questions
Is spouting the same thing as a gutter?
Yes. Spouting is the standard New Zealand term for what US homeowners call a gutter. The hardware and function are identical; only the name changes by market.
Why does Canada use eavestroughs instead of gutters?
It's regional convention rather than a functional difference. Eavestrough describes the same trough-shaped hardware at the eave line, and the term is standard across English-speaking Canada, though gutter is widely understood there too.
What's the difference between a downspout and a downpipe?
Nothing but the name. Downspout is the US and Canadian term, downpipe is used in the UK, Australia, and New Zealand. Both describe the vertical pipe carrying water from the gutter to the ground.
What is K-style gutter?
K-style is the profile whose front face resembles crown moulding in cross-section. It dominates new US construction, holds more water than half-round of the same width, and is harder to clean because debris packs into the flat bottom and the decorative curve.