FlowGuard USA Made 5 in Gutter Cover System - 22 ft White

In this review of the FlowGuard USA Made Professional DIY 5 in 50-Year Gutter Cover System, the bottom line is simple: this product is for homeowners who want a long-term, low-maintenance solution to clogged gutters that also demands a professional-grade build. Installed on 5 in gutters and supplied with stainless steel screws, the system's most compelling reason to buy is its heavy gauge aluminum construction and a 50 year no-questions-asked warranty, which together promise durability and years of virtually maintenance-free performance.

Key Features

• Made in the USA: Every component is manufactured domestically, offering traceable production quality and consistent material standards.
• Heavy gauge aluminum: The.018 painted aluminum resists rust and will not deteriorate under normal weather exposure, giving long-term protection.
• Full hemmed edges: Front and rear hems double material thickness where mounting stress is highest, so the cover resists bending under heavy rains, snow, and wind.
• 3-point design: The raised pattern allows airflow under debris and creates micro-dams that help prevent overflow while still channeling heavy rain into the gutter.
• Easy DIY installation: Dual interlocking ends, a 45 degree drain hole layout for mitered corners, and included stainless steel twin-thread pierce point screws make cutting and fastening straightforward with basic tools.
• Long warranty: A 50 year no-questions-asked warranty provides strong peace of mind for long-term investment protection.

Who It's For

The FlowGuard gutter cover is best suited to homeowners with 5 in gutter systems who want a robust, long-lasting guard that can be installed as a DIY project or by a contractor. It appeals to those who prefer a metal solution over plastic options, need resistance to heavy rainfall or snow loads, and want a product backed by a long warranty.

It is less ideal for people who need a temporary or very low-cost short-term fix, or for properties with unusual gutter profiles not compatible with a top-mount, hemmed-aluminum cover. If you require hidden-hanger installations under shingles, verify compatibility with your roof details before purchase.

Pros & Cons

Pros

• Well-built.018 heavy gauge painted aluminum offers long-term corrosion resistance and rigidity.
• Includes stainless steel 1/2 in #8 twin thread pierce point screws for secure, long-lasting attachment.
• 3-point design reduces debris adhesion and maintains drainage even when partially covered by leaves.

Cons

• Requires basic metal cutting and drilling tools, so totally tool-free installation is not realistic for all homeowners.
• Color options are limited to a few finishes, which may not match every roof or trim color preference perfectly.

Specifications

Our Verdict

The FlowGuard 5 in gutter cover is a strong value for homeowners seeking a long-lasting, low-maintenance gutter protection solution. Its heavy gauge aluminum construction, practical 3-point design, and included stainless fasteners make it a durable DIY-friendly choice, and the 50 year warranty removes much of the risk. Choose this if you want a professionally built cover that minimizes future gutter cleaning and stands up to severe weather.

Frequently Asked Questions

Will FlowGuard fit my 5 in gutters?
Yes; this model is purpose-made for standard 5 in gutter profiles and is supplied in 22 ft lengths for cutting to fit.

Does installation void roof warranties?
FlowGuard states that installing the cover under shingles does not void roof warranties, but check your specific roof warranty terms and installation method before proceeding.

What tools are needed for DIY installation?
Basic metal snips or shears, a drill or driver with a 1/4 in bit for the twin-thread screws, and measuring/cutting tools are typically sufficient.