Close valleys.

 

Open valleys it's way better. Because close valley will fail .

 

Some valleys close on flat .

 

Is that a typical width for metal valley flashing? Seems awfully narrow.

 

Yes ,it's a 24" valley.

 

first pic looks like they put the metal over the felt, iv seen that before. im sure it depends where you live as to what valley exposure you use. where i live there are no trees and therefore no valley exposure. the first tile roof i did i put a 4" exposure but the gen threw a fit, said he didnt want to see any metal. out of the thousands of tile roof here, arizona, no metal showing.

 

Yes, they did that's one code here for tile roofs . On shingles 1" in each side, and tile roofs the same . I done both ways. On s tile I use close valleys,because it has alot room under the tile to run the water free. But in flat tile it doesn't , and I use open valley and I paint it to match the roof.

 

i see. yeah when using metal fro shingles i always did a 1" on each side. shakes about the same. but as for putting the metal on top of the felt, well it would be a problem finding a valley leak that way, i know they put down a felt under the valley but still. thinking about it why would it be any different than doing it for a shake, or wood shingle, roof.

 

For tile , close valley I put the valley over the felt on S tile. And it has 3 felts under the valley. Because if I Do it like shingles or flat tile. The leaves can block the water and will run side ways and causing a leak. To leak a valley it needs to crack the felt firts. You can do that in flat tile too , but cause more problems than S tile. All the repair that I have done on flat tile, it's close valley water running about 2 ,3 feet side ways and damaging the felt and causing leaks.

 

Close valley on s tile and open valley on flat tile.

 

Looks great