Eavestrough vs gutter is a naming question, not a product choice: an eavestrough and a gutter are the same thing, the open channel fixed along the edge of a roof that catches rainwater and routes it to a downspout. “Eavestrough” is the Canadian term (the Dictionary of Canadianisms on Historical Principles calls it virtually unknown outside Canada and 25 times more common in Canadian than American English), while “gutter” dominates the United States. Neither name signals a different shape, material, capacity, or price. If one contractor quotes an “eavestrough” and another quotes a “gutter,” they are pricing identical work.
By The Roofing Brief Team (masthead). Last reviewed: October 2026.
A quote that uses the unfamiliar word does not cover a special product. Canadian maker Gentek lists a 5-inch gutter (part 1954) on its Eavestrough product page, next to 2×3 and 3×4 downpipes, so even one manufacturer uses both words for the same part on the same page.
Is an eavestrough the same as a gutter?
Yes. An eavestrough and a gutter are the same roof-edge component, and the choice of word is regional, not technical. Merriam-Webster defines gutter in its first sense as “a trough along the eaves to catch and carry off rainwater,” which is the literal meaning of eaves plus trough. Both systems use the same K-style and half-round profiles and the same 5-inch and 6-inch standard widths, per HomeGuide’s aluminum gutter guide. A crew installing “eavestroughs” in Ottawa and a crew installing “gutters” in Atlanta hang the identical part. For the full breakdown of the component, see what a gutter is and how it works.
Why do Canadians say eavestrough instead of gutter?
Canadians say “eavestrough” because the word is a plain description of the object: a trough that runs along the eaves. Per the Dictionary of Canadianisms, the earliest US citation is Herman Melville’s 1851 novel Moby-Dick, and Merriam-Webster also dates “eaves trough” to 1851. “Gutter” is much older: Merriam-Webster dates its roof sense to the 14th century, from Anglo-French gutere and Latin gutta, “drop.” Because “gutter” also means the channel at the side of a street, the compound “eavestrough” names the roof version with no ambiguity.
Inside Canada the split is not uniform either. The Dictionary of Canadianisms reports, citing Boberg (2010), that eavestrough is used most in Alberta, Saskatchewan, and Ontario, while gutter is the preferred variant on the coasts (British Columbia and Newfoundland) and in Anglophone Quebec.
| Region | Common term | Evidence |
|---|---|---|
| Alberta, Saskatchewan, Ontario | Eavestrough | DCHP-2, citing Boberg (2010: 176) |
| British Columbia, Newfoundland, Anglophone Quebec | Gutter preferred | DCHP-2 |
| Northern and North Midland United States | Eaves trough or gutter | Dictionary of American Regional English, as cited in DCHP-2 |
| Rest of the United States | Gutter | DARE 2013 to 2014 survey (below) |
| United Kingdom and Ireland | Guttering or rain gutter | Common usage |
| Australia and New Zealand | Spouting or gutter | Common usage |
The US numbers are lopsided. When the Dictionary of American Regional English 2013 to 2014 survey asked “What hangs below the edge of the roof to carry off rainwater?” (question D28), 21 of 31 answers were gutter, gutters or rain gutter, and 7 were a trough form (eave trough, eave troughs, eaves trough, eves trough, rain trough). It is a small sample, but it matches the regional split above.
Is there a technical difference between an eavestrough and a gutter?
There is one narrow linguistic distinction, and it does not affect the product you buy. “Eavestrough” always means the channel at the roof’s edge. “Gutter” is wider: Merriam-Webster’s sense 1b is a low area at the edge of a street, and sense 1c covers any trough, such as a bowling-lane gutter. So every eavestrough is a gutter, but not every gutter is an eavestrough. On a house, both words point to the same roof-edge system.
The building codes do not distinguish them either. In the US, IRC R801.3 requires a controlled method of roof water disposal only where expansive or collapsible soils are known to exist, discharging at least 5 feet (1,524 mm) from foundation walls or to an approved drainage system. In Canada, National Building Code Sentence 9.26.18.2.(1), as quoted in the BC Housing Builder Guide to Site and Foundation Drainage, requires downspout extensions that carry rainwater away without soil erosion where downspouts are not connected to a sewer. Neither code uses the product name to change the rule.
| Spec | “Eavestrough” (Canada) | “Gutter” (US) | Source |
|---|---|---|---|
| Standard widths | 5 in and 6 in | 5 in and 6 in | HomeGuide; Gentek lists a 5 in eavestrough |
| Aluminum thickness | 0.027 in moderate climates; 0.032 to 0.040 in where ice is common | Same | HomeGuide aluminum gutter guide |
| K-style material price, 5 in | Same product | $1 to $4 per linear foot (material only) | HomeGuide aluminum gutter guide |
| Installed aluminum price | Same product | $4 to $12 per linear foot | HomeGuide aluminum gutter guide |
| Code that governs discharge | NBC 9.26.18.2.(1): extensions where not connected to a sewer | IRC R801.3: 5 ft from foundation on expansive or collapsible soils | NBC via BC Housing; ICC |
| Vertical pipe name | Downpipe or downspout | Downspout | Gentek eavestrough page |
Eavestrough vs gutter: does the word change the cost?
No. The name has no effect on price, because the material and labor are identical. Installed aluminum runs $4 to $12 per linear foot in HomeGuide’s aluminum gutter guide, with sectional at $4 to $8, whichever word is on the quote. What moves the price is gauge (0.027 in vs 0.032 in), width (5 in vs 6 in), profile (K-style vs half-round), length, roof height, and downspout count. Compare the ranges in the gutter cost per linear foot for 2026 breakdown, which applies to eavestroughs in exactly the same figures.
The real cost decisions are material and profile, not terminology:
- Material: HomeGuide prices 5 in K-style aluminum at $1 to $4 per foot for material alone; steel, copper, zinc, and vinyl each sit at different price points. See gutter materials compared.
- Profile: HomeGuide lists 5 in half-round aluminum at $3 to $5 per foot of material versus $1 to $4 for K-style. Read K-style vs half-round profiles.
- Seams: seamless one-piece runs cut joints compared with sectional; HomeGuide’s sectional range is $4 to $8 per foot installed. Both are sold under either name.
| If your quote | Then check | Threshold |
|---|---|---|
| Says “eavestrough” and a second quote says “gutter” | Compare width, gauge, profile and downspout count line by line | Same spec should land within the same per-foot range |
| Lists 0.025 in aluminum | Ask for 0.027 in or heavier | HomeGuide calls 0.025 in low quality; 0.027 in is typical for moderate climates |
| Is for a home where ice is common | Ask for heavy-duty aluminum | 0.032 to 0.040 in, per HomeGuide |
| Is in an area with expansive or collapsible soils (US) | Confirm downspouts discharge far enough out | At least 5 ft from foundation walls, IRC R801.3 |
| Is in Canada with downspouts not tied to a sewer | Confirm extensions or splash pads are included | NBC 9.26.18.2.(1) |
What is the difference between an eavestrough and a downspout?
An eavestrough (or gutter) is the horizontal channel along the roof edge; a downspout is the vertical pipe that carries the collected water down to the ground. Gentek’s Canadian catalog calls the pipe a downpipe and sells it in 2×3-inch and 3×4-inch sizes. Water flows off the roof into the eavestrough, travels along its slope to an outlet, then drops through the downspout to a splash block, extension, or drain. For the word’s other uses, see our guide to gutter meaning.
Drip edge is the other roof-edge part people mix up with the gutter: IRC R905.2.8.5 requires it at the eaves and rake edges of asphalt shingle roofs, and the gutter hangs below it. See how drip edge compares with a gutter apron. To see how the channel ties into the roof edge alongside the fascia and soffit, read how gutters, soffit, and fascia work together.
Which word should you use?
Use whichever term your local market uses. In an October 2026 Google search for “eavestrough” from Canada, the first results were retailer category pages at Home Depot Canada and Home Hardware and the Gentek Canada eavestrough page, so the Canadian word returns local suppliers. In most of the US, “gutter” does the same, and 21 of 31 DARE survey answers used a gutter form.
When you write to a contractor in another region, either word is understood. Specify the width (5 in or 6 in), the aluminum thickness (0.027 in or 0.032 in), the profile, and the number of downspouts, and the quote will be the same whichever word you use.
Frequently asked questions
Is an eavestrough the same as a gutter?
Yes. An eavestrough and a gutter are the same roof-edge channel that collects rainwater and directs it to a downspout. The difference is only regional vocabulary: Canada, especially Alberta, Saskatchewan and Ontario, favors eavestrough, while most of the United States says gutter. The shape, material, size, and price are identical, so a quote using either word covers the same work.
Why do Canadians say eavestrough instead of gutter?
Canadians use eavestrough because the word plainly describes the object: a trough running along the eaves of a roof. The Dictionary of Canadianisms finds it 25 times more common in Canadian than American English, with the earliest US citation in the 1851 novel Moby-Dick. Gutter is the broader English word for any drainage channel, including a street gutter, so most US regions use it for the roof version too.
Is there any performance difference between an eavestrough and a gutter?
No. There is no performance difference, because the two words describe the same product. Capacity, slope, leak resistance, and lifespan depend on material, width, thickness, profile, and install quality, never on which name your region uses. A 6-inch K-style aluminum channel at 0.032 in performs the same whether a contractor calls it an eavestrough or a gutter.
What is the difference between an eavestrough and a downspout?
An eavestrough, also called a gutter, is the horizontal channel along the roof edge that catches runoff. A downspout, called a downpipe in some Canadian catalogs and commonly sold in 2×3-inch and 3×4-inch sizes, is the vertical pipe that carries that water down to the ground. They are two parts of one drainage system, not two names for the same part. Water flows into the eavestrough, along its slope to an outlet, then down the downspout.
Do eavestroughs cost more than gutters?
No. The word does not change the price, because eavestrough and gutter are the same product. HomeGuide puts installed aluminum at $4 to $12 per linear foot under either name. Cost depends on material, width, thickness, length, roof height, corners, and downspout count. If two quotes use different words for the same specification, they should land at similar prices.
What do they call gutters in the UK and Australia?
In the United Kingdom and Ireland the roof-edge channel is usually called guttering or a rain gutter. In Australia and New Zealand it is often called spouting, though gutter is also used. All of these terms, along with the North American eavestrough, describe the same component: the trough at the roof edge that collects rainwater and sends it to a downspout.