Gutter Systems

Seamless Gutter Systems: No Joints, No Leaks, No Debris Buildup

Custom-Bilt continuous rain gutter systems offer the most efficient way to collect and drain rainwater.

Why Contractors Choose CBM for Gutters

Seamless

No Joint, No Leak

Formed on-site to exact length. No pieced-together sections that sag, leak, or trap debris.

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Western U.S. Locations
Stock available from CA, AZ, NV, OR, WA, HI, and ID. Same-day pickup at most branches.

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Material Options
Aluminum, steel, copper, and Zincalume®. All finished with Dura Coat XT-10 or natural metal.

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Supplier: Roof + Gutter
Match gutter color to roofing panel exactly. One spec, one order, one delivery.

Seamless Gutter Profiles

All profiles are continuous seamless — formed on-site by your contractor. Available in aluminum, steel, copper (16 oz.), and Zincalume®.
K-STYLE / O.G.

"K" or "O/G" Style Seamless Gutter

Best for: Residential, most common North American profile
The most widely installed gutter profile in the U.S. Flat back mounts flush to fascia. Available in two sizes for different roof drainage loads.

5" & 6"

STANDARD MATERIAL

Aluminum (0.27)
Copper (16 oz.)
Steel (26 gauge)

HALF-ROUND

Half Round Style Gutter

Best for: Historic, traditional, and premium residential
Semicircular profile used in historic restoration and high-end residential. Self-cleaning profile — debris passes through rather than accumulating.

5" & 6"

STANDARD MATERIAL

Aluminum (0.27)
Copper (16 oz.)
Steel (26 gauge)

FASCIA STYLE

Fascia Style Seamless Gutter

Best for: Contemporary residential and commercial — clean roofline
Hides the fascia board completely for a finished, integrated look. Higher capacity than K-style at equivalent widths.

5½" & 6"

STANDARD MATERIAL

Aluminum (0.27)
Copper (16 oz.)
Steel (26 gauge)

SUPER / DEEP FASCIA

Super or Deep Fascia Style Seamless Gutter

Best for: High-volume drainage, large commercial roofs
Extra-deep 7¼” fascia profile for maximum water capacity on large roof areas and high-rainfall regions.

7¼"

STANDARD MATERIAL

Copper (16 oz.)
Steel (26 gauge)

Documents apply across all gutter profiles:

Gutter Systems – Component List

Downspouts

Rectangular & round profiles
RECTANGULAR

2″×3″
3″×4″
4″×5″

ROUND

2″ Round
3″ Round
4″ Round

Aluminum, copper & steel available. Contact your branch for complete sizing list.

Fittings

Elbows, miters, end caps & conductor heads
ELBOWS

A-Style
B-Style
Round
Offset
Y-Branch

END CAPS

4″ K-Style
5″ K-Style
6″ K-Style
5″ Fascia
5″ Line

MITERS

5″ Box
6″ Box
5″ Strip
6″ Strip
5″ Strip Bay
6″ Strip Bay

CONDUCTOR HEADS

Box with Round Outlet
Square Leader Head

Hangers, Outlets & Flashing

Mounting, drainage & edge protection
HANGERS

5″ Hidden
6″ Hidden
5″ S.S.T. Bar
6″ S.S.T. Bar
Wrap Around

FLASHING

Drip Edge
Lip Guard
Custom Form

OUTLETS

2″×3″
Round
Pop-in
Ultimate
Adaptors

Guards, Strainers & Accessories

Protection, maintenance & installation tools
GUTTER GUARDS

6″×25′ Roll
5″×4′ Flat Deluxe
6″×4′ Flat Deluxe
20″ Roll Plastic
E-Z Lock

ACCESSORIES

Sealants
Aerosol Paint
Expansion Joints
Rain Chains
Splash Blocks

STRAINERS

2″ Strainer
3″ Strainer
Perforated Flat
Cage Strainer

TOOLS

Crimpers
Aviation Snip
Gutter Savers
Ladder Max
Caulking Gun
Hole Saws

Iron Man Seamless Rollformers

CBM sells and supports the Iron Man series. Purchase includes free alignment and maintenance for the lifetime of the machine while you remain a CBM customer.

Iron Man Junior

Compact entry-level rollformer
Spec Sheet

Iron Man 6" Seamless Rollformer

K-Style · 6" · Aluminum
Spec Sheet

Iron Man 5" Fascia Cutter

Fascia · 5.5" · Aluminum
Spec Sheet

Iron Man 6" Half-Round Seamless Rollformer

Half-Round · 6" · Aluminum
Spec Sheet

Iron Man 5" Seamless Rollformer

K-Style · 5" · Aluminum
Spec Sheet

Iron Man 7" Seamless Rollformer

Fascia/K-Style · 7" · Aluminum
Spec Sheet

Iron Man 5/6" Seamless Rollformer

K-Style · 5" & 6" combo · Aluminum
Spec Sheet

Used Machines Available

Availability varies by location. Contact your local CBM branch for current inventory.

Machine purchase includes: Manufacturer warranty + free alignment and maintenance for the lifetime of the machine as a CBM customer.

Gutter Stock at 10 Locations

Gutter profiles and components are stocked at all CBM branches. Contact your nearest location for availability.
Chino, CA

(909) 664-1587

Honolulu, HI

(808) 845-1806

Lakewood, WA

(253) 872-7330

McClellan, CA

(916) 333-5680

Nampa-Boise, ID

(986) 837-9508

Phoenix, AZ

(602) 484-7015

Portland, OR

(503) 256-3328

San Jose, CA

(408) 433-0823

Spokane, WA

(509) 533-1703

Van Nuys, CA

(747) 998-2258

⚠ Profile availability varies by region. Contact location before specifying.

On This Page

Seamless Gutter Systems: Profiles, Materials, and Sizing

K-Style vs. Half-Round vs. Fascia Gutters

K-style gutters feature a flat back and decorative front, making them the most popular residential profile in North America. Half-round gutters use a semicircular trough — preferred for historic homes and copper installations. Fascia-style gutters cover the fascia board entirely, creating a sleek, modern roofline.

Seamless vs. Sectional: Why Seamless Wins

Sectional gutters join pre-cut pieces at seams — every seam is a potential leak point. Seamless gutters are formed on-site to the exact length of the roofline, eliminating joints entirely. The result is a cleaner look, longer lifespan, and dramatically less maintenance.

Aluminum vs. Copper Gutters

Aluminum is the standard choice — lightweight, corrosion-resistant, available in 20+ painted colors. Copper gutters cost significantly more but develop a distinctive green patina and are the material of choice for historic restoration and premium residential.

What Size Gutter for Your Roof?

Gutter sizing depends on roof area, pitch, and local rainfall intensity. A 5" gutter handles most residential roofs under 2,400 sq ft. Larger roofs or high-rainfall areas need 6" or 7.25" (super fascia).

Find Your Nearest Location

Gutter stock is available at 10 CBM branches across the Western U.S. Call ahead to confirm profile and color availability.

Need a Quote?

Tell us your project and a CBM rep will respond same or next business day with sizing, pricing, and machine availability.