I have had leaf guard gutters for around eight years. During the past years, whenever we had a bad winter, all the water backs up and comes down into the house.
I have recently contracted a person who is replacing these gutters and soffets (due to water backup) with commerical gutters. I went to a lot of expense and now going through more expense due to the wood rotting all these years. I do not recommend these gutters to anyone. They are horrible.
I do live in a house with no sun hitting the front of the house so this creates a problem.
KEEP THE OLD GUTTERS AND HAVE THEM CLEANED ONCE A YEAR. Here I thought I was saving money--whereas it has created a big problem.