I just installed some fascia gutters on my place, which has four W-metal valleys that drain 90% of the roof water. The existing shake roof overhangs a fair amount, and is installed over more shakes, so it’s fairly built up. I hung the gutters as high as I could but a test with a hose shows that when there’s a lot of water draining down the valleys, it overshoots the gutters. I’ll be able to correct this easily when I re-roof, but that ain’t ’til next season. In the meantime I’m looking for a simple and effective way to modify the valleys to slow the water down. How about making a series of parallel cuts into the ends of the valley metal and bending up some small ‘teeth’. I’m sure someone out there has a positively brilliant suggestion.
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Flatten the roof and valleys
Check dams....
Diverters....
Yankee gutters.....
Larger width gutters...
Move house to the Sahara...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming
WOW!!! What a Ride!
If you live where ice is not an issue, how about one or more sandbags in each of the valleys to slow the onrush? Tube sox with both ends anchored to the shake with 3/4" washer head screws ought to do it. Bad idea in ice country, though. Splash guards screwed to inside front face of gutters at the valley outfalls will help a lot. Use the same metal as your gutters and round the ends to avoid getting cut.
Bill
elephant ears("splash guards" ) is the usual "fix"..
a more elegant one would be oversizing your gutters and using a smaller splash guard.. you can get 6" gutter which is often just enough to make the difference..
dams in a valley are asking for trouble.... more trouble than water overshooting a gutter..
did i ever tell you how much i dislike gutters ?Mike Smith Rhode Island : Design / Build / Repair / Restore
Drive thru any recent development and check out the spalsh guards on the gutter corners at bottoms of the valleysGod never gives us small ideas.
Sojourners: Christians for Justice and Peace
Elephant ears.... what do those look like? I had thought of attaching a 'riser' to the inside of the outside face at each inside corner.... maybe going 6" in each direction, and coming up about 1" as needed to catch the overshoot. Would work, but FUGLY.
Like I said originally, this will all be moot when I reroof and put the new valley metal (if I actually use metal) down on the sheathing, whereas right now it's sitting on top of 1" or more of old shakes.
I've have to trash the gutters and start over to change their shape. They're already up there. 18g galv in a 5" fascia shape, soldered into one piece, with 2" round downspouts... retro look, old house. If I put up any modern painted aluminum stuff on this place my wife would tear it down the same day.