Most of our competitors use a ‘reverse curve’ system.

These systems allow stuff to get into their gutters. In fact, they will try to sell you extra big downspouts to carry away the stuff that will — absolutely — get into your gutters. At the same time they’ll tell you almost nothing will get into your gutters. That doesn’t make a lot of sense, does it? If almost nothing gets into their system, why do they need to install extra big downspouts?

Filters, screens, meshes, reverse curves, perforations, louvers, fine screens, slits, slots & combinations of the above have never done what LeafFilter™ can do: Keep ALL the debris out ALL of the time!

Side by side comparisons to LeafFilter™ reveal that Gutter Helmet, GutterMaxx/Gutter Guard, LeafGuard, Gutter Topper, Flo-Free, Leaf Proof, Permaflow/Waterfall, Gutter Protec, Leaf Free, Gutter Pro, Cinch, Hallet Gutter Cover, Sheerflow, and all their look alikes cannot keep gutter-clogging medium-sized and small debris out of your gutter. LeafFilter™ can! They let stuff in, we keep stuff out!

K.T.S.O. rating
(keeps the stuff out)

K.T.S.O. Rating for gutter protection is a measure of a product’s ability to prevent debris from entering into a gutter. Pollen particles are assigned a value of 100, grains of sand (120 microns in size) are assigned a value of 80, fir needs a value of 60… The green bar (the “efficiency bar”) indicates a product’s ability to block various sizes of organic debris. 100% efficiency, on a K.T.S.O. chart, would mean a gutter protector could keep pollen sized particles out of a gutter while still remaining 100% water permeable. LeafFilter's™ incredible rating of 97 assures us that LeafFilter™ will NEVER allow a gutter to clog.

What about the debris-blocking ability of our competitors? How does the K.T.S.O. chart translate into everyday performance for them?

Ratings below 40 indicate that a product may readily allow materials and organisms as large as white pine needles, oak tassels, medium and small leaves as well as mosquitoes, wasps, and flies into your gutter. There is an undeniable risk that these products may allow gutter clogs (and serve as insect nests).

Products rated between 30 and 40 may reduce the number of occasions a gutter needs to be unclogged, but the risk of clogs is ever present… especially if there are more than a few trees in the vicinity.

Ratings below 30 indicate that a gutter cover may readily allow snakes, lizards, mice, and birds into your gutter. It IS possible that some of these listed critters may try to take up residence in a gutter that has a “roof” (like a reverse curve hood) over it.

We at LeafFilter™ love nature, but do manage to keep it's inhabitants out of your gutters. In a final comparative analysis to other gutter guards: they let stuff in, we keep stuff out.

NOTHING matches LeafFilter's™ ability to keep your gutters clog-free!