5 Inch Box Curved End Cap - K-Style Crimp On Gutter Cap

Important Fit, Tool, and Sealant Notice

This end cap is made for 5 inch K-style gutters. Confirm gutter profile and left or right end before ordering.

Crimp-on installation requires an end cap crimper tool. The cap is mechanically locked to the gutter edge with the crimper instead of being attached with screws or rivets.

Geocel 2320 tripolymer sealant is recommended. Apply sealant at the gutter-end joint before crimping and along the inside seam after crimping for added water control.

Finish Gutter Runs Faster Without Drilling Extra Holes

A gutter end cap has one job: close the gutter end cleanly so roof water stays inside the run until it reaches the outlet or downspout. Poorly fitted caps, loose fasteners, and unsealed seams can let water drip onto fascia, siding, trim, decks, walkways, landscaping, and foundation areas.

This crimp-on box curved end cap gives installers a fast, clean way to terminate 5 inch K-style gutter runs with no fastener holes through the cap.

Key Benefits at a Glance

5 Inch Box Curved Crimp-On End Cap for K-Style Gutters

This 5 inch box curved end cap is a professional gutter component for closing the left or right end of a 5 inch K-style gutter run. It is used on new gutter installations, gutter repairs, storm-damage work, service routes, remodels, and contractor stock orders where a clean crimp-on cap is preferred.

The crimp-on design lets the installer lock the cap to the gutter edge with an end cap crimper tool. Because the cap does not require screws or rivets through the face, it helps reduce extra holes at the gutter end and leaves a cleaner finished appearance.

The box curved shape is made for 5 inch K-style gutter terminations. Use it with Geocel 2320 or another compatible professional gutter sealant to help seal the joint between the cap and gutter.

This part may also be called a gutter end cap, gutter cap, gutter stop, K-style end cap, crimp-on cap, gutter end piece, box curved cap, or gutter termination cap.

GutterAll in Damascus, OR helps gutter installers, roofers, builders, property maintenance teams, remodelers, and DIY homeowners choose the right left/right configuration, color, quantity, sealant, tool, pickup, local delivery, and shipping method.

Why the Right End Cap Matters

Gutter ends take water pressure, thermal movement, debris contact, ladder bumps, and seasonal expansion. A weak or poorly sealed end cap can turn a finished gutter run into a drip point that stains fascia, wets siding, washes out mulch, and creates callbacks.

A crimp-on end cap helps installers create a tight mechanical hold along the cap edge while sealant handles the water seal inside the seam. That combination is practical for speed, appearance, and service-route consistency.

For contractors, this is the everyday cap to keep in truck stock and shop inventory. For homeowners, it is a direct replacement part for 5 inch K-style gutter ends when paired with the right tool and sealant.

Contractor Applications

How the Crimp-On End Cap Works

The cap fits over the open end of a 5 inch K-style gutter. The installer applies compatible gutter sealant where the cap meets the gutter, places the cap on the correct left or right end, and uses an end cap crimper tool to fold the cap edge tightly onto the gutter.

The crimp creates a mechanical hold along the overlap instead of relying on screws or rivets through the cap face. Sealant is then used along the inside seam to help water stay inside the gutter run.

For best results, confirm the gutter profile, choose the correct left or right cap, clean the gutter end, use the right crimper tool, and follow the sealant manufacturer’s instructions for application and cure time.

Choose the Right End Cap Setup

Key Features

Quick Decision Summary

Choose this 5 inch box curved crimp-on end cap when closing the left or right end of a 5 inch K-style gutter run. It is built from .027 inch aluminum, comes in 31 factory colors, installs with an end cap crimper tool, and pairs with Geocel 2320 or another compatible gutter sealant for a cleaner, tighter gutter termination.

Benefits Buyers Notice Fast

• Closes open ends on 5 inch K-style gutter runs
• Helps reduce leaks at gutter terminations when installed and sealed correctly
• Crimp-on design avoids added screws or rivets through the cap face
• Fast installation method for gutter contractors and repair crews
• Cleaner finished look with no visible face fasteners
• Box curved profile helps close the gutter end with a shaped water-containment design
• .027 inch aluminum helps the cap hold shape during crimping
• Left and right options close either end of a gutter run
• 31 factory colors help match existing gutter systems
• Works for repairs, remodels, new gutter runs, and contractor inventory
• Single pieces support small repairs and DIY jobs
• 100pc boxes support high-volume contractor work
• Pairs with Geocel 2320 for professional gutter seam sealing
• Useful for gutter installers, roofers, builders, maintenance crews, and homeowners
• Website chat helps confirm side, color, quantity, sealant, tool, pickup, delivery, and shipping options

Product Specifications

Factory Color Options

Available factory color options include 30 Deg. White, 80 Deg. White, Black, Musket Brown, Beaver Brown, Clay, Dark Bronze, Light Bronze, Royal Brown, Rustic Copper, Safari Beige, Tuxedo Gray, Wicker, Almond, Antique Ivory, Buckskin Brown, Classic Cream, Colonial Blue, Colonial Gray, Colonial Red, Copper Metallic, Dove Gray, Eggshell, Forest Green, Heritage Cream, Herringbone, Linen, Paint Grip Metallic, Raffia Beige, Copper, and Galvalume Plus.

Use website chat first to confirm the closest current color match for existing gutters, new coil, downspouts, trim, siding, or exterior finishes.

Left vs. Right Selection Guide

Who Uses 5 Inch Box Curved Crimp-On End Caps?

Crimp-On Installation Guide

1. Confirm the gutter is 5 inch K-style and choose the correct left or right end cap.
2. Clean debris, old sealant, dirt, and loose material from the gutter end.
3. Dry the joint area when possible and follow the sealant directions for acceptable surface conditions.
4. Apply Geocel 2320 or compatible gutter sealant around the inside lip where the end cap contacts the gutter.
5. Place the cap firmly onto the gutter end and make sure the cap is fully seated on all edges.
6. Use an end cap crimper tool to crimp along the cap edge where it overlaps the gutter.
7. Work around the cap evenly so the connection is tight and consistent.
8. Add sealant along the inside seam where the end cap meets the gutter.
9. Inspect the joint for gaps, loose edges, or missed sealant areas.
10. Allow sealant to cure according to the product directions before exposing the joint to heavy water flow whenever possible.

Pro Tip

Keep left caps, right caps, an end cap crimper, and Geocel 2320 together in the same service bin. The fastest repair is the one where the crew has the correct side, color, tool, and sealant before they climb the ladder.

Frequently Asked Questions

Fit, Tool, and Installation Notice

Confirm 5 inch K-style gutter profile, left or right end, color, crimper tool availability, and compatible sealant before ordering or installing.

Crimp-on caps still need sealant at the seam. A mechanical crimp helps hold the cap, while sealant helps control water at the joint.

Installation at gutter height requires ladder safety. Professional installation is recommended for tall locations, difficult access, damaged gutter ends, or any project where water damage risk is high.

Need Help Matching the Right End Cap?

The right setup depends on gutter size, K-style profile, left or right end, color, quantity, sealant, tool needs, pickup timing, local delivery, and shipping. Start with website chat for the fastest help checking current options.

Product Summary Box

The 5 Inch Box Curved End Cap is a crimp-on aluminum gutter cap for closing the left or right end of 5 inch K-style gutter runs. It uses .027 inch aluminum, comes in 31 factory colors, and is available as singles or 100pc contractor boxes. Use an end cap crimper tool and Geocel 2320 or another compatible professional gutter sealant for a clean, tight gutter termination on repairs, new installations, remodels, and contractor service work.