Half-Round Gutter Installation in the Treasure Valley
The correct profile for craftsman and historic homes.
Free on-site estimate · No-pressure quote · Same crew start to finish
QUICK ANSWER
Half-round is the historically correct profile for pre-1950 homes, craftsman bungalows, and custom builds that reference those eras. We install aluminum and copper half-round in 4-, 5-, and 6-inch sizes with round corrugated downspouts and profile-specific hangers.
- 5″ & 6″ K-Style
- Half-Round
- Aluminum
- Color-Matched
- Hidden Hangers
WHAT’S INCLUDED
What’s included in Half-Round Gutter Installation?
K-style gutters are the industry default, but they're not architecturally correct for every home. Houses built before roughly 1950 — and newer craftsman, colonial, and custom builds that borrow from those traditions — were designed around a half-round profile. The tubular shape isn't just period-appropriate; it also flows debris through more cleanly than the sharp inside corners of K-style. We install half-round gutters in .027 and .032-gauge aluminum and in copper, paired with round corrugated downspouts and the appropriate hangers for each material. If your home looks wrong with K-style gutters, half-round is likely the reason.
- True half-round profile, not the shallow K-style approximation
- .027 and .032-gauge aluminum, plus 16oz and 20oz copper options
- Round corrugated downspouts sized to actual roof drainage load
- Fascia brackets or half-round-specific hangers (not K-style hardware)
- Period-appropriate inside and outside miters
- Available in standard baked-on enamel palette (aluminum) or natural patina (copper)
- Compatible with micro-mesh guards designed for round profiles
- Historically accurate profiles for Boise North End and Caldwell downtown homes
WHY US
Why Treasure Valley homeowners choose us.
Architecturally correct for pre-1950 homes and craftsman builds; restores the original look
Smooth tubular interior sheds debris with less corner buildup than K-style
Pairs with copper downspouts for full historic-appropriate systems
Matches or improves the home's existing aesthetic without a generic box-gutter look
OUR PROCESS
How does half-round gutters installation work?
Profile confirmation and measurement
We confirm whether half-round is appropriate for your home's architecture, measure all eave runs, and determine downspout count and sizing based on roof drainage area. We review the gutter size (4-inch, 5-inch, or 6-inch half-round) and round downspout diameter against your actual roof load — not defaults.
Old gutter removal and fascia assessment
Existing gutters are removed and the fascia inspected for rot, old nail holes, and any damage from the previous system. Half-round hangers attach to the fascia differently than K-style hidden hangers — we confirm solid attachment points are available before proceeding. Soft or failed fascia boards are flagged and must be addressed before new gutters go up.
Half-round-specific hanger installation
We install the correct hanger type for the profile and material: fascia brackets for aluminum half-round, copper spike-and-ferrule or copper-compatible stainless brackets for copper systems. Hanger spacing is set tighter than K-style because the round profile doesn't distribute load the same way. Each hanger is set to establish correct pitch before the gutter section is fitted.
Gutter fitting and sealing
Aluminum half-round sections are fitted and joined with slip-connector miters sealed with butyl sealant. Copper half-round sections are soldered at all joints. End caps and outlet connections are sealed or soldered depending on material. We dry-fit every section before final attachment to confirm pitch and alignment.
Round corrugated downspout installation
Round corrugated downspouts are cut to length, attached with matching round elbows at top and bottom, and secured to the wall with round downspout brackets. We route downspouts away from the foundation and add splash blocks or underground drain connectors where the grade requires it.
Water test and walkthrough
Each run is flushed end-to-end before we leave. Water should move cleanly from the far end of each run to its downspout with no pooling. We walk the completed install with you, discuss the patina process if copper was used, and leave written warranty paperwork for both materials and workmanship.
MATERIALS
Half-Round Gutters materials and options.
Profile
- 4-inch half-round (smaller eave overhangs, historic homes with modest roof area)
- 5-inch half-round (standard for most Treasure Valley homes with this profile)
- 6-inch half-round (larger custom homes, steep pitches, high-debris yards)
Material
- .027-gauge aluminum half-round (standard, full enamel color palette)
- .032-gauge aluminum half-round (heavy-duty for Foothills homes and wide spans)
- 16oz copper half-round (historic and high-end custom; develops natural patina)
- 20oz copper half-round (premium gauge for long spans and major custom projects)
Downspouts
- Round corrugated aluminum (standard match for aluminum half-round)
- Round corrugated copper (soldered match for copper half-round systems)
- Corrugated elbows and offsets matched to downspout material
Hangers
- Half-round aluminum fascia brackets (aluminum systems)
- Copper spike-and-ferrule (historic restoration, period-appropriate for copper)
- Copper-compatible stainless fascia brackets (modern copper install)
PRICING
Half-round gutter installation is priced per linear foot, similar to K-style seamless, with adjustments for profile size, material (aluminum vs. copper), downspout configuration, and story count. Copper half-round is priced at the copper rate — typically 3 to 5 times aluminum. Our cost calculator provides a baseline range for gutter installation; contact us for a profile-specific quote on half-round systems.
Get a quick range →Real numbers come from on-site visits.
SERVICE AREA
Available in Half-Round Gutters across the Treasure Valley.
We serve Boise and all surrounding Treasure Valley communities. Select your city for local pricing, neighborhoods, and availability.
Boise, ID
Ada County
Half-Round Gutters in Boise →
Meridian, ID
Ada County
Half-Round Gutters in Meridian →
Eagle, ID
Ada County
Half-Round Gutters in Eagle →
Nampa, ID
Canyon County
Half-Round Gutters in Nampa →
Caldwell, ID
Canyon County
Half-Round Gutters in Caldwell →
Kuna, ID
Ada County
Half-Round Gutters in Kuna →
Star, ID
Ada County
Half-Round Gutters in Star →
Garden City, ID
Ada County
Half-Round Gutters in Garden City →
Hidden Springs, ID
Ada County
Half-Round Gutters in Hidden Springs →
Southeast Boise, ID
Ada County
Half-Round Gutters in Southeast Boise →
West Boise, ID
Ada County
Half-Round Gutters in West Boise →
Middleton, ID
Canyon County
Half-Round Gutters in Middleton →
Emmett, ID
Gem County
Half-Round Gutters in Emmett →
Mountain Home, ID
Elmore County
Half-Round Gutters in Mountain Home →
More Services
Other services in the Treasure Valley
Gutter Guard Installation
Stop cleaning gutters for good.
See gutter guards →Gutter Installation & Replacement
Seamless gutters that actually drain.
See gutter installation →Gutter Repair
Fix leaks, sags, and pulled-away sections.
See gutter repair →Gutter Cleaning
Hand-cleaned gutters, flushed downspouts.
See gutter cleaning →Seamless Gutter Installation
Formed on-site. No joints to leak.
See seamless gutters →Copper Gutter Installation
50-year gutters that get better looking over time.
See copper gutters →Ice Dam Prevention
Stop the freeze-thaw cycle before it reaches your ceiling.
See ice dam prevention →CHOOSING A CONTRACTOR
What to ask any half-round gutters contractor.
These are the questions we’d ask if we were hiring someone for our own home. A legitimate contractor answers all of them without hesitation.
Questions to ask
- Do you have experience installing half-round profiles specifically, not just K-style?
- What hanger type is specified for half-round: fascia brackets or K-style hidden hangers? (Half-round brackets are correct.)
- What downspout profile pairs with the half-round system: round corrugated or square?
- If copper is involved, are joints being soldered or sealed with sealant only?
- Do you carry gutter guards rated for round-profile gutters?
- Will you inspect the fascia before installation and flag any damage?
Red flags to watch for
- K-style hangers used to hang half-round gutters. The profile doesn't seat correctly and sags over time.
- Half-round quoted in aluminum but with K-style downspouts. The round/square mismatch at the outlet requires an adapter and looks wrong on a historic home.
- Sealant-only joints on copper half-round without soldering. All copper joints should be soldered.
- Contractor unfamiliar with half-round-specific guard systems. Standard K-style guards won't fit.
- Fascia not inspected before installation. Half-round bracket hangers need solid wood just like K-style hidden hangers.
- Profile size selected by default (always 5-inch) without considering your actual roof drainage area.
WHY PROFESSIONAL
Is professional half-round gutters worth it?
K-style gutters dominate new construction because they're faster to install, match most standard soffit profiles, and cost slightly less per foot than half-round. On a new subdivision home in Meridian or Kuna, K-style is usually the right call. On a 1920s bungalow in Boise's North End, K-style often looks like a cost-cutting afterthought — the angular profile reads as out of period against the curved rooflines and exposed rafter tails those homes were built with. Half-round isn't an upgrade in functional terms; it's an architectural match. For homeowners restoring pre-1950 homes, the difference in cost between aluminum K-style and aluminum half-round is modest, but the difference in how the home reads from the street is not.
Ready for Half-Round Gutters in the Treasure Valley?
Free on-site estimates. Licensed Idaho contractor. Call (208) 247-2660 or request a quote online.
BEFORE YOU BOOK
How we run the job and what we stand behind.
Our process, step-by-step
Seven steps from quote to walkthrough. What to expect at every stage, including lead time, install day, and post-install follow-up.
Workmanship & material warranty
What our workmanship covers, what manufacturer warranties cover, and what’s explicitly not covered. Specific terms disclosed in writing on every estimate.
Frequently asked questions
What homes are half-round gutters appropriate for?
How does half-round compare to K-style for drainage?
Are half-round gutters available in aluminum?
Do half-round gutters use different hangers than K-style?
What downspouts pair with half-round gutters?
Can gutter guards be installed on half-round gutters?
Get a free Half-Round Gutters estimate today.
Licensed · Insured · Locally owned in the Treasure Valley.