If the system is maintenance free, how does it clean itself?
This certainly relates to the angle of the guard shedding debris, but there’s a lot more to it than that. No matter how well you shed debris, there’s always going to be some particle size that could get wedged into the product somehow. Think about it – you get an infinite amount of junk of any infinite variety of sizes – how do you deal with a particle like pollen that could get stuck in a pore?
Will the installation of a gutter guard cause damage to my home?
There are questions you should ask about the installation process: How is this attached? How does it interact with the roof? Is there only one way to install this? What happens if the gutter is too high? Too low? At what angle is this guard designed to have water hit it? How much water does it handle? Is it rigid or flexible?
Does your company use subcontractors?
So many people seem to take this for granted these days, but if the actual work isn’t done by the company you hired but is instead farmed out to a low bidder whose name you don’t know and isn’t even responsible for your job – how much is that guy going to care about your satisfaction?
Can anything but water get into my gutters?