What is the general consensus on the best type of downspout filter?
I presume the type of roof onto which the water is falling, the presence (or absence) of gutter guards, destination of the water, and intended use of the water would all have an impact on the response.
I see basic home center type “filters” for $6, such as:
These are advertised as “self cleaning” however my experience is wet leaves can easily get stuck on the grate resulting in the water diverting out the chute, and not going to its intended destination.
On the other end are $130 (or more) items such as:
https://www.raincollectionsupplies.com/3P_Rainus_Downspout_Filter_p/filtrd.htm with which I have no experience.
There are many in between, both in function and price point. What should I be looking for, and which brands have worked well for others?
Specifically, I’m wondering about the best type of downspout filter for
– Roof: Asphalt shingles
– Gutter guards: What is the recommendation? See also below.
– Destination & Use: Two destinations
a:Underground Flow Well set in #57 stone, with silt control fabric between the stone and the earth. Water is supposed to perk back into the earth. Theoretically keeping as much debris as possible out of the flow well and surrounding stone will retain it’s original capacity longer.
b: One downspout will divert to a rainwater holding tank to be used for irrigation. Overflow from the tank will divert back to the FlowWell. I presume the filtration for this system needs to be more robust?
In my area, people just slam these rainwater systems in to meet code and pass inspection, and most of them lose capacity very quickly. I’d like to be environmentally responsible and keep my stormwater out of the city system as much as possible, so I’d like to maintain the capacity of my system as long as possible.
Gutter guards seem like the first “prefilter” for these systems, so having the correct type seems critical. What is the recommendation on that?
– The very fine mesh stainless steel guards will filter out the fines, but there are claims pollen clogs the mesh, so while what gets in is well filtered, the clogged mesh allows some/most of the water to roll over the gutters. Claims are similar for the foam inserts.
– The larger mesh (approx. 1/4″ size openings) are claimed to be more resistant to clogging. Are these the best to use along with a fine mesh downspout filter? The downspout filter at grade is obviously easier to clean.