Matching the old size
Replacing like for like repeats an undersizing problem that may have been there since the house was built.
Roofing services
Gutters move roof runoff away from the foundation, and their capacity is arithmetic rather than opinion: roof area, rainfall intensity, gutter profile and the number of downspouts. A gutter that overflows in heavy rain is usually undersized or under-drained, not blocked.
HyreRoof does not repair, replace or inspect roofs. This page explains the work so you can judge a quote and a contractor.
The short version
Drainage area per run against local rainfall intensity, then profile, size and downspout count.
And inspect the fascia behind it. Rot here is common and is a separate repair.
Before anything new is hung. Fixing a new gutter to soft fascia guarantees a return visit.
Seamless runs are formed on site. Hangers at the specified spacing, with the run sloped toward the outlets.
Number and placement matter more than most homeowners expect, and are the usual cause of overflow.
Extensions, splash blocks or a drain. Water delivered to the foundation is a foundation problem you paid to create.
With a hose at the top of each run, checking for ponding, leaks and correct fall.
Two separate choices: the shape decides capacity, the material decides longevity and price.
| K-style | The common profile in the United States. Carries more water than half-round at the same nominal width, and the flat back fixes directly to the fascia. |
|---|---|
| Half-round | Traditional appearance, often on period or higher-end homes. Carries roughly 80 per cent of what a K-style of the same nominal size does, so sizing up is common. |
| Seamless aluminium | Formed on site to the length of the run, so there are no joints except at corners and outlets. The default for most replacements. |
| Sectional | Joined lengths. Cheaper and DIY-friendly, with more seams and therefore more potential leak points. |
| Steel | Stronger and better under ladders and ice, heavier, and can rust where the coating is breached. |
| Copper | Very long life and an appearance that changes over time. The most expensive option by a wide margin. |
| Guards and covers | Reduce cleaning rather than eliminate it. Performance varies a great deal by type and by what falls on your roof. |
Gutters are priced by the linear foot plus the downspouts, with the usual access variables on top.
| Factor | Why it changes the number |
|---|---|
| Linear feet of run | The basic quantity, measured around the eaves that actually need it. |
| Profile and size | 6-inch costs more per foot than 5-inch, and is often the correct answer on a large or steep roof. |
| Material | Aluminium, steel and copper are separated by a wide margin, in that order. |
| Number of downspouts | Adding outlets is usually cheaper than upsizing the whole run, and often more effective. |
| Height and access | Two-storey and steep-pitch work needs more staging and more crew time. |
| Fascia repair | Found once the old gutter is off. The same change-order dynamic as roof decking. |
| Guards | Priced per foot on top, and the range between types is very wide. |
HyreRoof publishes no national average price for this work. Regional labour, disposal and material rates move it far enough that a single figure would mislead.
Overflowing gutters are usually a sizing problem. If they overflow when clean, cleaning them more often will not fix it. Work out the required capacity before buying more gutter: the answer is frequently another downspout rather than a larger profile.
The full ten-point checklist is on choosing a roofer.
Replacing like for like repeats an undersizing problem that may have been there since the house was built.
The gutter is rarely the constraint. Outlets usually are, and adding one is the cheaper fix.
New gutter on soft timber sags within a season. The fascia is the repair; the gutter is the visible part.
Moving water off the roof and delivering it to the footing solves one problem and creates a more expensive one.
Guards reduce cleaning. They do not add capacity, and some types reduce it.
It depends on the roof area feeding each run and your local rainfall intensity, matched against the gutter profile and the number of downspouts. A 6-inch K-style carries roughly 1.9 times what a 5-inch does. Half-round carries less than K-style at the same nominal size. Our gutter calculator works it against the published IPC tables.
Usually because they are undersized for the roof area, or under-drained: too few downspouts, or downspouts too small or badly placed. Cleaning more often will not fix either. Work out the required capacity before buying more gutter.
Often it makes sense, because the access is already paid for and the drip edge detail is being reworked anyway. It is also the point at which fascia damage behind the old gutter becomes visible and cheap to address.
They reduce how often you clean rather than eliminating it, and performance varies widely by type and by what falls on your roof. Some designs reduce capacity, which matters if the run is already marginal. They are a maintenance decision, not a capacity one.
It depends on material, fixing and exposure, and the failure is usually at seams, hangers or the fascia behind rather than in the gutter itself. Aluminium is the common default. Steel is stronger under ladders and ice. Copper lasts longest and costs the most.
No. Ice dams are caused by heat escaping into the attic, melting snow on the upper roof, which then refreezes at the cold eave. Gutters can fill with that ice and be damaged by it, but replacing them does not address the cause, which is attic insulation and ventilation.
Information on this page is general and may vary by location, building code, roof design, insurance policy and individual circumstances. It is not insurance, legal or engineering advice. HyreRoof is an independent roofing resource and connection platform, not a roofing contractor, and does not perform, supervise or warrant roofing work.
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