FlowGuard 6 in Gutter Cover System - 50-Year Warranty

Our review of the FlowGuard USA Made Professional DIY 6 in Gutter Cover System finds it best for homeowners who want a long-term, low-maintenance solution to clogged gutters. The single biggest reason to buy is durability-the reinforced.018 gauge aluminum construction and stainless steel fasteners paired with a 50-year warranty make this product a solution built to last. Installation is straightforward for a capable DIYer, and the 3-point design reliably diverts leaves and stops birds from nesting, which reduces maintenance and helps protect a home's foundation.

Key Features

• Made in the USA: Manufactured domestically to provide consistent quality and material control for long-term performance.
• Reinforced aluminum:.018 gauge aluminum gives the cover strength to resist sagging and adds rigidity to the existing gutter run.
• Leaf protection: The unique 3-point design keeps leaves, twigs, birds, and nests out of 6 in gutters so water flows freely and reduces overflow risk.
• Easy installation: Dual interlocking ends allow a clean continuous run that can be cut with tin snips and secured with the included stainless steel zip screws.
• Long warranty: A 50-year, no-questions-asked manufacturer warranty offers peace of mind against material defects and premature failure.

Who It's For

This gutter cover system is aimed at homeowners with 6 in commercial-size gutters who want a durable, low-maintenance solution and are comfortable doing basic exterior DIY work. It suits a range of roof types and is ideal where bird nesting or heavy leaf fall has been a recurring problem.

It is less appropriate for those who need a snap-on product that requires no fastening or for users who prefer a professional-only installation service; while installation is straightforward, it does require cutting and fastening with a drill or driver.

Pros & Cons

Pros

• Made from reinforced.018 gauge aluminum that adds strength and reduces sagging in long runs.
• Stops leaves, twigs and wildlife nesting so gutters remain clear and water is directed away from the foundation.
• Includes stainless steel fasteners and a dual interlocking design for a continuous, rust-resistant installation.

Cons

• Requires basic DIY skill to cut and fasten; not a completely tool-free snap-on solution.
• Only sized for 6 in gutters, so it is not compatible with narrower residential gutters without modification.

Specifications

Our Verdict

The FlowGuard 6 in gutter cover is a solid choice for homeowners who want durable, maintenance-reducing gutter protection that stands up to seasons and wildlife. Its reinforced aluminum, included stainless fasteners, and long warranty deliver good value for anyone comfortable with a DIY install and looking to minimize future gutter cleaning.

Frequently Asked Questions

Will this void my roof warranty?
FlowGuard is designed not to void roof warranties when installed per instructions.

Can I cut the cover to size?
Yes, the covers can be cut with tin snips and joined using the dual interlocking ends and provided screws.

Does it stop birds and squirrels?
The 3-point design is intended to prevent birds and squirrels from building nests inside the gutter channel.