GutterStuff GSK532-3 Guard K Style Foam Gutter Filter Insert, 5-Inch, Pro

The idea is genius in my opinion. I felt so good about the concept that I purchased 160 feet (>$400). The only problem is the product sits about an inch below the top of the gutter. I believe my gutters are standard size, and the product barely slips below the nails that hold the gutter to the house. But on top of the product small leaves, seed pods, and other stuff collects and stays there. Even with 40 mph winds we have had recently, the top of the product is covered with leaves, reducing the ability of rain to go into the gutter. And I know that in 6-12 months this will degrade and make cleaning gutters even more difficult than before.Such a shame -- if they would just make the product bigger, or have a half-circle aluminum piece with many holes in it to let water thru, that sits underneath the product, which would raise the top of the product flush with the top of the gutter. I would not even care if 1/4 to 1/2 inch of the product showed from the street, as it would work beautifully then.And maybe this is my fault, but I installed the entire 160 feet of product, so I don't believe I can return the product. Expensive mistake. Avoid this product.

I live under a gigantic Sycamore. My first winter in the house, 3 years ago, saw me up a ladder at 3am removing a huge clog of leaves from the gutter outside the bedroom. I mean the sound of falling water is soothing and all, but not when it's a stream that sounds like an elephant relieving itself on a tennis court!After a ton of research, I decided to give GutterStuff a go. I went for the "Pro" version due to the claim of longer life (I don't like to have to redo things) and calced out the required length I'd need.It took one afternoon to get it all installed. It loses a star because It's not really clear which way around to orient the "angle" in the gutter and even once I'd figured out the best way, sections still tend to drop in deeper than they need to. There's a little work left here for them to figure out a better fitment mechanism, but that's my only gripe.The first winter was pretty mild (it's Northern California, after all :) ) and it didn't miss a beat. My nights were void of elephants!This summer I decided to get back on the roof and see how the gutters looked. There were almost no leaves (per the claim, leaves dry up and blow off the top, having no where to collect in any meaningful layers) but the Sycamore seeds (little feathery things) are quite small and tend not to move around once they find a good place. The holes in the foam itself provided enough purchase for the little buggers to hang around. That said, the pores were not completely clogged and I'm sure that, even with the seeds in place, water would still be able to get through at a good rate.Being anal, however, I dragged my ShopVac onto the roof and spent an hour or so clearing off the worst of the seeds from the valleys in the roofline and sucking the worst of the top layer off the GutterPro foam. That was several months ago, so I'm sure that Fall provided plenty more crud to drop on top of the then clean pores.Well, this weekend was the true test. A series of Pacific Storms swept the Bay Area and drenched Silicon Valley. My gutters didn't even flutter. Several neighbours were having overflowing problems, the streets were pooled and my garden could not absorb another drop, but the water disappeared off my roof without a hint of overflowing.Highly recommend!

Be careful about who is offering this product. (There are knockoff brands that are not actually GutterStuff. Who knows how they would honor a warranty.) The product I purchased over 5 years ago, GutterStuff Pro, with a 15 year warranty, did fail, but the company has honored the warranty with replacement. But note! The company owner indicated they are now making the foam with a different, better quality foam, which should last longer. As I received excellent customer service, I am rating this 5 stars, as I sincerely believe the newer product will be better. Do check out the GutterStuff website (gutterstuff.com), as they have even higher quality products and longer warranties, and they can customize to precisely what you need.(Original review, not modified:). I ordered the GutterStuff Pro from Amazon (A different company than Amazon was providing it), but was sent the ordinary GuttersStuff, which has a lower quality and shorter warranty. I returned the first order and was sent another, yet the box once again indicated it was only the ordinary GutterStuff, so I returned that as well. I believe Amazon removed that provider as a result. When I spoke to Amazon customer service by phone, I received excellent, prompt attention both times. That keeps me as a happy, returning Amazon customer.In any event, the GutterStuff Pro looks like it will hold up well and I am optimistic that it will do the job it is supposed to do. I probably won't be able to really evaluate its performance for another two or three years.

Installed 2 months now after talking to CEO of company. Pro version with 15 year warranty now far superior to older item that had only 3 year warranty. Complete new product formula and paint to protect from weather and sun related damage. It has blocked all pine needles and maple seed "propellers" and still achieves maximum waterflow through gutters.I notched bottom of gutterstuff where gutter supports where finding this to be easier to install than trying to force it under the supports. I was still able to tuck front under front lip of gutter and back under shingle overhang, trim and rear gutter edge. This created a snug fit with a slight upward belly to gutterstuff . This almost makes them self cleaning in heavy downpours by gradually pushing needles, seeds and leaves forward and off to ground and allowing water to penetration through to gutter without any noticeable slowdown in waterflow.I have this suspicion that in the snowy northeast this will make it easier to slide snow off my roof to the ground without snow buildup in the gutter. I also feel I must do this faithfully before any melting and freezing takes place after a snow storm. Hopefully, this will reduce or eliminate last year's ice dams.