Guides
Gutter Guard Types: Mesh, Screen, Foam, Brush and Hoods
Gutter guards all try to do the same thing: let water in and keep debris out. They go about it in five different ways, and the way a guard works decides what it stops, what slips past, and how it is installed.
Updated · Gutter Fixing Editorial Team
A walk down the gutter aisle of a home store, or a few minutes of online ads, shows dozens of guard products. Most fall into five families. Understanding the family tells you far more than the brand name. This guide explains each type and how it is fitted; the best gutter guards guide covers how to choose one for your trees and roof.
Micro-mesh gutter guards
Micro-mesh guards use a fine woven or etched stainless steel mesh, often stretched over an aluminum frame. The holes are tiny, so water passes through by surface tension while pine needles, seeds, shingle grit and most pollen stay on top, to be blown off by wind or brushed away. Stainless mesh resists corrosion and keeps its shape. The frame screws to the front lip of the gutter and slides under the first course of shingles or sits on the gutter back.
Micro-mesh is the type professional installers use most often, because it handles the widest range of debris. Its weakness is that very fine debris, such as oak tassels and pollen, can form a mat on top that needs occasional brushing.
Gutter screens
Screen guards are perforated or expanded metal or plastic sheets with larger holes, usually a quarter inch or so. They are cheap and easy to fit: many simply snap into the gutter or slide under the shingles. They keep out broad leaves well, but pine needles, seeds and small twigs drop through the holes or wedge in them. Plastic screens can warp in sun. Screens suit homes under maples and oaks with large leaves and few needles.
Foam inserts
Foam guards are triangular lengths of porous foam that sit inside the gutter, filling the trough. Water soaks through the foam while leaves sit on top. They are very easy to install with no tools, which makes them popular for DIY. Over time, fine debris clogs the foam pores, seeds can sprout in it, and the foam breaks down in sun. They usually need replacing within a few years and are best for light debris.
Brush gutter guards
Brush guards look like giant pipe cleaners: a twisted wire core with stiff bristles radiating out. They sit in the gutter and catch leaves on the bristles while water flows underneath. They are simple to fit and remove, and they handle large leaves reasonably well. Needles and small debris get tangled in the bristles, so brushes need pulling out and shaking clean. They are a common short-term or renter-friendly option.
Reverse-curve (surface tension) hoods
Reverse-curve guards are solid covers with a rounded front nose. Water follows the curve around the nose and drops into a slot below, while leaves slide off the front. They are effective with heavy leaf fall and are usually sold by specialist companies as whole systems. In very heavy downpours, water can overshoot the curve. They are visible from the ground, change the look of the roof edge, and are the hardest type to remove for cleaning.
Comparing the types
| Type | Stops | Lets through | Installation |
|---|---|---|---|
| Micro-mesh | Leaves, needles, seeds, grit | Some pollen and fine dust | Screwed to gutter lip; pro or skilled DIY |
| Screen | Broad leaves | Needles, seeds, small twigs | Snap-in or slide under shingles; easy DIY |
| Foam | Leaves on top | Fine debris clogs it | Push into gutter; very easy |
| Brush | Large leaves | Needles tangle in bristles | Drop into gutter; very easy |
| Reverse curve | Leaves and twigs | Can overshoot in heavy rain | Specialist install; attached to roof edge |
Guard materials
Aluminum gutter guards are light and rust-free and come in colors to match the gutter. Stainless steel mesh lasts longest and is used on most micro-mesh products. Plastic and vinyl guards are cheapest but can warp, crack and fade in sun. Copper guards exist to match copper gutters. Whatever the material, it should be compatible with the gutter metal to avoid corrosion.
How to install gutter guards
- Clean the gutters and flush the downspouts first; a guard over debris traps it.
- Check and fix slope, sags and leaks, because access is harder once the guard is on.
- Fit the guard according to its type: under the shingles, on top of the gutter back, or clipped to the front lip.
- Cut and fit corners carefully so no gaps let debris in at the miters.
- Secure with screws to the gutter lip where the design calls for it, especially in windy areas.
- Check that the guard does not lift shingles or void the roof warranty.
Sliding guards under shingles can crack brittle shingles in cold weather and may conflict with some roofing warranties. Many modern guards avoid this by resting on or clipping to the back of the gutter.
Guards and cleaning
No guard makes gutters maintenance-free. Mesh and screen tops need an occasional brush or blow; foam and brush inserts need pulling out and cleaning; hoods need their slot cleared. Downspouts still need checking. Contractors in our network can install guards of most types and explain the upkeep each one needs. The gutter guards service page covers that work.
Gutter covers and solid toppers
Some products sold as gutter covers are solid aluminum caps that close most of the gutter top, leaving a narrow slot. They behave like reverse-curve hoods. Others are simply heavier screens. When a product is called a cover, ask whether water enters through mesh, holes or a front slot, since that tells you which family it belongs to and how it will behave.
Guards for K-style gutters and downspout screens
Most guards sold in stores are sized for K-style gutters, the flat-backed profile on most American homes, in 5-inch and 6-inch widths. Measure the inside width of the trough before buying, because a 5 inch guard will not seal properly on a 6-inch gutter. Half-round gutters need guards made for their curved shape. Long micro mesh panels typically come in 4 ft lengths, cut to fit at corners and end caps.
A down spout screen is a small basket or flat mesh that sits over the outlet hole. Down spout screens and gutter drain mesh catch leaves that would otherwise plug the pipe, and they are worth adding even on gutters without full guards. Check them after storms, since a screen that is covered in leaves can stop the gutter draining at all.
Hanging holiday lights on guarded gutters
Clips that hook onto the front lip of an open gutter often will not fit once a guard is on. For hanging Christmas lights with gutter guards, use clips that grip the shingle edge or the front edge of the guard itself, or adhesive clips on the fascia. Avoid screwing hooks through mesh, which voids many warranties and makes holes that let debris through.
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- How Gutters Are Installed: Layout, Slope and Hangers
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- Gutter Water Damage: Foundations, Basements and Splash Guards
- How to Choose a Gutter Contractor You Can Trust
- Gutter Maintenance Checklist: A Season-by-Season Plan
- Sagging Gutters: Why They Sag and How to Fix Them
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