They Like It
Roof drain screen by bowdidge is licensed under the Attribution - Creative Commons license.
© 2010 by bowdidge
Instructions
1) Print out several copies.
2) Clean off extra filaments from the print head travelling between the legs.
3) Paint, either to protect from UV or to ensure no one steps on one of the screens.
4) Get ladder, and place against house.
5) Climb onto roof. (Be careful!)
6) Insert one screen in each drain, with the two legs fitting into the drain to hold it steady. Make sure the screen sits mostly flush on the roof's surface.
7) Climb off the roof. (Be doubly careful!)
8) Drink beer, and enjoy not worrying about whether the drains are clogged.
Update, 2/27/10: One screen has been on the roof during the recent storms, and did well - there's little (small) debris clogging the screen, but it's keeping the seed pods out of the drain. I found the springy arms broke very easily because of the small cross-section and less strength between layers. I ended up removing the legs, drilling a pair of 1/8" holes in the top, and placing a U-shaped piece of #14 gauge wire into the holes to keep the screen centered over the hole and in place. There's now four in place on our roof, with another six needed.
