First, What Counts as a Closed Gutter System?
A closed gutter system (you’ll also hear covered gutters or gutter protection) is any gutter with something over the open top. Gutter guard types for that cover include screens, fine mesh, solid hoods and fillers inside the trough. The job never changes: let water in and keep the leaf pile out.
Where gutter guard types differ is how they draw that line. Some block debris by size, some shed it by shape as water clings to a curve, and some fill the gutter so debris can’t settle.
One thing a cover doesn’t change is the routine underneath. Our gutter maintenance tips cover that seasonal cleaning routine. This page is about the lid.
Covered gutters cut down the cleaning. They don’t end it.
Our summary of InterNACHI’s gutter inspection guidance, which says covered systems may prevent excess buildup but still need regular maintenance.Five Gutter Guard Types, Served as Recipe Cards
Read these gutter guard types like Grandma’s stuffing recipe: what goes in, how it’s assembled, who it feeds and the margin note.
Screens
01- Ingredients
- Aluminum, steel or vinyl sheet with punched holes, or a wire grid.
- Prep
- Snaps or lays over the gutter top. Many sections lift out by hand.
- Serves
- Big, flat leaves. Small bits, needles and seeds can slip through the openings.
- Kitchen note
- Lift a section each season and rinse anything sitting in the holes or the trough.
Micro-Mesh
02- Ingredients
- Fine stainless steel mesh, usually held in a rigid aluminum frame.
- Prep
- The frame fastens to the gutter, with the back edge set at the roof edge per the maker’s instructions.
- Serves
- Leaves, needles, seeds and even fine roof grit stay on top of the mesh.
- Kitchen note
- A soft brush or garden hose clears pollen or dried tassels that settle on the surface.
Reverse-Curve Hood
03- Ingredients
- A solid aluminum or vinyl hood with a rounded front nose and a slot below it.
- Prep
- Covers the whole gutter and secures at the front lip and roof edge; details vary by brand.
- Serves
- Leaves and pods roll off the nose while water follows the curve in (surface tension).
- Kitchen note
- Wipe the nose and shine a flashlight through the slot once a year to check the trough.
Foam Inserts
04- Ingredients
- A long wedge of porous foam cut to fit inside the gutter.
- Prep
- Slides into the trough. No fasteners, so it’s one of the easiest DIY options.
- Serves
- Keeps larger debris from settling in the bottom of the gutter.
- Kitchen note
- Pull, shake and rinse it when the top stays matted. Replace it when it crumbles or stays clogged.
Brush Inserts
05- Ingredients
- A twisted wire core with stiff bristles, like a giant bottle brush.
- Prep
- Drops into the gutter. No tools, no fasteners, no roof contact.
- Serves
- Big leaves rest on the bristle tips while water drops through to the trough.
- Kitchen note
- Lift it out and shake it. Needles and tassels weave into the bristles over time.
What’s Falling on Your Roof?
Pick the debris your yard serves up most. The plate below ranks how gutter guard types typically handle it, from holds up well to struggles.
Maple Leaves: Big, Flat and All at Once
Maples drop broad leaves in a short window. Which gutter guard types shed them, and which let them mat?
- Micro-meshHolds up wellLeaves stay on top; dry ones blow off, wet ones brush away.
- Reverse-curve hoodHolds up wellBroad leaves slide past the nose.
- ScreensHolds up wellWhole leaves can’t pass; broken bits can.
- FoamMixedWet leaves mat on the foam and slow the water.
- BrushMixedLeaves snag on the bristle tips and pile up.
Oak Tassels: Stringy, Sticky and Springtime
Oak flower tassels fall in spring, then acorns and tough leaves follow in fall. Wet tassels cling to whatever they land on.
- Micro-meshHolds up wellTassels stay on the surface until a dry day or a brush clears them.
- ScreensMixedTassel pieces work through larger openings.
- Reverse-curve hoodMixedWet strands can cling to the nose and ride water in.
- FoamMixedTassels mat on top and hold moisture.
- BrushStrugglesStrands tangle deep in the bristles.
Pine Needles: Small, Sharp and Year-Round
Needles are the toughest guest for most gutter guard types: thin enough to slip through openings, stiff enough to spear soft materials.
- Micro-meshHolds up wellOpenings are too fine for needles to drop through.
- Reverse-curve hoodMixedMost slide off; some follow the water into the slot.
- ScreensStrugglesNeedles fall through or stand up in the holes.
- FoamStrugglesNeedles stab into the foam and stay put.
- BrushStrugglesNeedles weave into the bristles.
Seed Pods & Helicopters: The Spring Shower
Maple helicopters and sweetgum balls test gutter guard types with small, hard pieces by the bucketful.
- Micro-meshHolds up wellPods sit on the mesh and roll or rinse off.
- Reverse-curve hoodHolds up wellRound pods roll off the solid hood.
- ScreensMixedHelicopter wings can wedge into openings.
- BrushMixedPods nest between the bristles.
- FoamStrugglesSeeds lodge in the surface and stay damp.
Heavy Rain: When the Gravy Boat Overflows
This tests gutter guard types on water, not debris: can the cover take in a downpour before it sheets over the edge?
- ScreensHolds up wellLarge openings take water quickly when clean.
- Micro-meshHolds up wellTakes in water across the whole surface when it’s clear; ask for the tested flow rating.
- BrushHolds up wellThe gutter stays mostly open under the bristles.
- Reverse-curve hoodMixedIn very hard bursts, water can run past the curve.
- FoamMixedWater has to soak through, slower once the top is dirty.
General guidance, not lab test results. Ratings describe how gutter guard types typically behave; products differ, so check each manufacturer’s specs and install instructions.
Heavy Ohio Downpours Test Gutter Guard Types
A summer thunderstorm can dump heavy rain in minutes. Even a perfect cover can’t move more water than the gutter and downspouts below it can carry.
So judge the guard and the gutter together. InterNACHI notes that gutters come in 4-, 5- and 6-inch sizes, that larger sizes move more water, and that capacity should go up in areas with heavy rainfall.
- 4–6 in.Common gutter widths. Larger channels carry more water.
- 1/16 in. per ftThe slope toward the downspout InterNACHI cites.
- 4–6 ftHow far downspouts should send water away from the foundation.
Don’t Lift the Lid on Your Shingles
Some gutter guard types tuck their back edge under the first course of shingles. Others rest on the gutter and the roof edge without touching shingles at all. That matters: the drip edge, starter strip and leak barrier all meet at the roof edge. Our guide to roofing system components shows how they fit.
GAF’s technical bulletin on gutter covers and shingles says professionally installed covers generally don’t affect the roofing manufacturer’s warranty. It also says the shingle warranty covers manufacturing defects, not the cover or damage from putting it on, and it advises avoiding covers whose instructions call for:
- Fastening through the shingle. Nails or screws driven through the roofing.
- Removing or replacing shingles. Pulling up roofing to fit the cover.
- Removing the drip edge. Taking off the metal that steers water into the gutter.
- Installing under the underlayment. Sliding the cover beneath the roof’s water-resistant layer.
The bulletin recommends a professional familiar with good roofing practices over a homeowner install. Gutters hang on the fascia, so see our exterior house trim guide for that board too.
Six Questions to Judge Any Covered Gutter
Bring these to every estimate. They work for all gutter guard types, whatever the brand.
- What falls on my roof, and when?Use the pairing table. Needles and seeds call for finer gutter guard types than leaves alone.
- Does it touch my shingles?Ask exactly where the back edge sits and whether anything fastens through roofing.
- Is the gutter right underneath?A cover on a sagging or undersized gutter still overflows. Check slope, size and downspouts first.
- How do I clean the surface?Can a brush or hose from the ground do it? Do sections lift off?
- Who stands behind it?The guard’s warranty is separate from your shingle warranty. Get both in writing.
- How does it handle a downpour?Ask for the product’s tested flow rating and how it compares to the rain your area gets.
Winter footnote: InterNACHI’s winterization guide warns that wet debris left in gutters can freeze and help form ice dams. A cover helps, as long as its surface stays clear going into the first frost.
The Takeaway Worth Sharing
Your trees write the menu. Pick from the gutter guard types that handle what actually falls, and plan on a quick look each season anyway.
Pass this to the relative who spends every Thanksgiving morning on a ladder.
Ready to Cover Your Gutters? Let’s Take a Look
Thrush & Son®: family-owned roofing and exterior pros since 1960.
If you’re in the Miami Valley and weighing gutter guard types, read the Thrush & Son® guide to fall gutter protection, then book a visit and we’ll check the gutters, roof edge and trees together.
➡️ Schedule in Dayton➡️ View All ServicesCall (937) 833-5136 · 115 Jefferson St, Brookville, OH 45309
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Further Reading
Official sources: InterNACHI gutter inspection, InterNACHI home winterization, the American Meteorological Society glossary and the GAF gutter covers bulletin.
Gutter Guard Types FAQ
What are the main gutter guard types?
The five common gutter guard types are screens, micro-mesh, reverse-curve hoods, foam inserts and brush inserts. They block debris by size, shed it by shape or fill the gutter so it can’t settle.
What is a closed gutter system?
A closed gutter system is a gutter with a cover over its open top, such as a mesh, screen or solid hood. It lets rain in while keeping most leaves and debris out of the trough.
Which gutter guard handles pine needles?
As general guidance, fine micro-mesh handles pine needles well because the openings are too small for needles to pass. Screens, foam and brush inserts tend to trap or let needles through.
Do covered gutters still need cleaning?
Yes. InterNACHI says covered gutter systems may prevent excess buildup but still need regular maintenance. Plan on clearing the surface and checking the downspouts each season.
Will gutter guards void my roof warranty?
GAF says professionally installed gutter covers generally don’t affect its shingle warranty. It advises avoiding covers that fasten through shingles, require removing shingles or drip edge, or go under the underlayment.
Written by Corey Thrush, Vice President and third generation of Thrush & Son®.
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