Eavestroughs

A seamless eavestrough is extruded from a coil of aluminum through a roll-former mounted on the truck, cut to the exact measured length of the run it is going on. The only joints in the finished system are at inside and outside corners and at the downspout outlets, all of which are sealed and riveted rather than relying on a snap fit.

Compare that with sectional gutter, which arrives in ten-foot lengths and is joined every ten feet. Every one of those joints is a place where sealant eventually fails, where debris catches and builds a dam, and where a freeze can pry the connection open. On a fifty-foot elevation, seamless has zero mid-run joints and sectional has four.

On-site forming also means the trough is cut to the actual measurement of your roofline rather than the nearest ten feet, which matters for how the fascia line looks when it is finished. Colour is matched to the fascia and trim from a stock range, and we run continuous hidden hangers rather than spike-and-ferrule, which is what stops the trough sagging under a load of wet snow.

The pitch is set by measurement, not eye. A trough needs enough fall toward the outlet to drain fully and not so much that it looks crooked against the fascia line — roughly a quarter inch of drop per ten feet is the working target. Standing water in a trough is what freezes, and ice is what tears eavestrough off a house.

The trough is only half the system. Where the water goes after it leaves the outlet decides whether the whole exercise was worth doing. Calgary sits on expansive clay: it swells as it takes on water and shrinks as it dries, and a foundation sitting in soil that is cycling through that movement is a foundation under stress. Concentrating roof runoff at the base of a wall is the most efficient way to cause that cycle.

The working rule is to discharge well away from the foundation — a minimum of about 1.8 metres, further on a lot that slopes back toward the house. That means downspouts sized and placed for the roof area they serve, and extensions that actually reach, rather than the stub elbow a builder installed and a homeowner later removed because it was in the way of the lawnmower.

Downspout count matters as much as trough size. One outlet serving a forty-foot run of steep roof will overflow no matter how big the trough is, because the water cannot get out of the system fast enough. We calculate outlets against roof area and pitch rather than defaulting to one per corner.

Where a lot has a genuine grading problem — a walkout backing into the slope, a side yard that ponds, a neighbour's downspout aimed at your foundation — extensions alone will not solve it, and we will tell you that rather than sell you a system that cannot succeed.

Gutter guards are worth exactly as much as the tree cover above your roof, and we would rather tell you that than sell you a system you do not need. Under mature elms, poplars and spruce — the established streets in Elbow Park, Mount Royal, Bowness, Renfrew, older Bridgeland — guards pay for themselves in avoided cleanings and, more importantly, in avoided ice damage from troughs that clogged in October and froze solid in November.

On a newer suburban lot with young landscaping and nothing overhanging the roof, guards are optional. Twice-yearly cleaning does the same job for less money. We will say so.

Where guards are worth it, the style matters. Fine micro-mesh screens keep out everything down to shingle granules and pine needles and are the right answer under conifers, at the cost of needing an occasional rinse when pollen loads up the mesh. Perforated aluminum handles leaves at a lower price point and is fine under deciduous cover. Foam and brush inserts we generally avoid — they trap debris inside the trough where you cannot see it, which converts a visible problem into a hidden one.

One thing no guard does is eliminate maintenance entirely, and any contractor promising that is overselling. A guard converts a twice-a-year clean-out into an occasional inspection. That is a genuinely good trade under heavy tree cover, and an unnecessary expense without it.

Not every eavestrough problem needs a new system. Sagging sections can often be re-hung and re-pitched, failed corner seals can be re-sealed, and a leaking outlet can be re-cut and re-fitted. What cannot be repaired economically is a trough that has been bent by ice, a run that has pulled its fasteners out of rotten fascia, or a sectional system where the joints have all reached the end of their sealant life at once.

Cleaning is the maintenance nobody schedules until it causes damage. Twice a year is the Calgary rule — once after the spring melt and the poplar fluff, once in late fall after the leaves are down. Under heavy conifer cover, make it three. The autumn clean is the important one: a trough full of wet leaves in November freezes into a solid block, and the weight and expansion of that ice is what tears eavestrough and fascia off a house.

Warning signs worth a call: water sheeting over the front edge in a normal rain, visible sagging between hangers, staining or streaking down the fascia, plants growing in the trough, water pooling against the foundation, or icicles forming along the eave in winter. That last one is not charming — it is a ventilation and drainage problem announcing itself.

We install and service eavestroughs across every Calgary quadrant and throughout the surrounding region — Airdrie, Chestermere, Cochrane, Okotoks, High River, Langdon, Strathmore, Crossfield, Carstairs, Didsbury, Olds, Innisfail, Red Deer, Sylvan Lake, Canmore, Drumheller and the acreages of Rocky View, Foothills, Mountain View and Red Deer County.

Acreage eavestroughing is a different specification. A country home usually has a bigger roof footprint, longer uninterrupted runs, and no windbreak, which means both more water and more debris in it. Six-inch trough and 3x4 downspouts are the norm rather than the upgrade out there, and discharge has to be planned against the actual grade rather than assumed.

Because eavestroughs are inexpensive relative to the rest of an exterior, they are also the easiest thing to bundle with a roof replacement. If the roof is coming off anyway, replacing the trough at the same time costs less than doing it as a separate mobilization — and it means the drip edge, fascia and trough all get set up as one system rather than three.