Cowleys Gutter Protection System
Cowleys Gutter Protection System features the Leaf Defier®, an absolutely worry-free, maintenance-free, cost-effective gutter protection system.
The Leaf Defier® is an open cell polyurethane insert, specially shaped and cut to fit snugly into your gutter. Even during the heaviest of 
rainstorms, the water flows through the Leaf Defier® into the gutter valley and out the downspout. Your gutters will remain clean and clear of clogs.
Proven Technology
This product has been successfully installed in thousands of homes across the nation, protecting them from all types of extreme weather conditions. It withstands heat, ice and torrential rains.
The Leaf Defier’s® patent pending material is factory treated with a Biocide and Fungicide that inhibits the growth of mold, mildew, fungus, algae and moss. It also has a built-in UV stabilizer to prevent degradation from the sun.
The Leaf Defier® Advantage
Clogged gutters can cause water damage to your home. Install Leaf Defier® and protect your home from foundation problems,basement leaks, rotting windows, rotting fascia boards and soffits, mold and mildew,and insect infestation. Our sleek and streamlined design is virtually invisible once installed and will not interfere with the beauty of your home.
Compression Force Characteristics
Both accelerated weathering tests and mechanical property evaluations have confirmed the superb quality and product integrity of the “multi-polymer” thermally fused gutter filtration system supplied by Leaf Defier®. This patent pending/proprietary technology has been 
tested by an independent quality assurance laboratory and the results detail the value-added nature of this innovative product for the gutter protection industry.
After testing at 1000 hours and 4500 hours (equivalent to 5 years exposure) of Xenon light chamber exposure, the “multi-Polymer” fusion coated material (TYPE 1 [Leaf Defier®]) retained more than 60 % of its original strength and integrity. The “chemically coated” product (TYPE 2) tested in the same chamber in side by side comparison tests, retained only 35 % of its structural integrity. The “untreated” (TYPE 3 & 4) urethane filtration media (also tested in side by side comparison) retained only 18 % and 23 % of their inherent strength from the first stress point of 1000 hours.
Leaf Defier®
Quality that outlasts its competitors.
Recently awarded the “Green Buildings Product Seal” from Green-Buildings.com due to its ability to meet several green and high-performance building criteria, Leaf Defier has also prevents sags and related gutter damage as well as overflows that can lead to landscape erosion, foundation cracking and other structural failures
You can read more about us and about our company history. See why you should choose Cowley's. We offer customers help with residential pest control, commercial pest control, residential termite management, and offer other additional services. We help customers exterminate bed bugs, termites, wood destroying insects, beetles, carpenter bees, ants, rodents, ticks, stinkbugs, and offer bird control and nuisance wildlife services.
