I had Gutter Filter installed on 10/04 and have never been satisfied. At least four times a year I have had to climb on the roof to clean out the gutters. The wind does not pick up the debris and blow it away. The valleys are consistently clogged with matter causing the gutters to overflow with any amount of rain.
I installed this product so I would not have to climb on my roof. The company is not interested in sending anyone to see about my problem, but insists I cut a one foot section out of the installation ( thus ruining it) and send it to them for "evaluation". When I bought the product I was told if at any time I was unhappy I should call my contractor and he would come out to clean the gutters. I have called but he is out of business. The parent company is uninterested in making a home inspection with another contractor.
Bottom line...the product really does not work as advertised