Barrel roof leak question..

I live in FL and my house has a barrel roof. In one of the valleys where the tiles come together some of the mortar has come loose/off and as a result rain water instead of going over this spot it goes under it and runs down on the top of the underlayment. This of course (at the end) runs along the facia board, instead of going in the gutter.

Question is: what should I use as a repair material... concrete/roofing mix or some form of caulking which can expand and contract .. or both (concrete as a foundation and then cauling on top)

Thanks..

 

For those of us that don't walk on sand, maybe you could post a pix or two of your roof problem. I have no idea what a barrel roof is. It may help us to understand what the exact problem is. Thanks. http://www.doityourself.com/forum/el...your-post.html

 

Will try to get a picture posted ASAP over next few days --- for clarification though I should have stated it is a barrel TILE (made of clay or concrete) roof .. not a barrel roof... sorry about that..here is a link to a picture of a barrel tile roof provided in wikipedia.

http://upload.wikimedia.org/wikipedi...-Tile-3149.jpg

 

Gotcha, inverted terracotta tiles. I have a distant relative in Sarasota who has one on her roof. We'll wait on pix. Thanks for the clarification.

 

The photo shows a hip, not a valley. Is that the same situation as yours? Missing mortar at the hip? If so, that mortar is more for looks, to keep birds and such out. Water does not usually run uphill. Maybe your picture will clarify what you mean.

I don't mess with tile roofs a lot, (they aren't common at all in my area) but from what I understand, the concrete is not really your waterproofing. Metal flashings are usually installed first, and they extend far enough under the tiles so as to catch any water that leaks or blows back underneath that first row. Depending on what sort of "underlayment" you have, they may have thought they could omit the flashing, but IMO that would be unwise, because like you mentioned, your gutter would not be flashed. It could be that the underlayment is on TOP of the flashing, which is fine. Maybe look for it next time you are up there snapping a picture. The same could be said for valleys, which almost always will have metal laid down the valley first.

So I'd suggest you investigate whether or not you actually have any metal flashing, and maybe clarify whether you are talking about a hip or valley. I'm guessing maybe you just linked to a picture to show the style of roof, and that you DID mean valley, like you originally said.

Correct valley detail is shown in this link.

Correct drip edge (gutter apron) detail is shown in this link.

 

Ok.. enclosed photos show the area I was trying to describe... I have placed some concrete & mortar patch material in/over the hole (and feathered it out) where the rain was going below the tile instead of on top of it. Hopefully this will work -- will test either later today or Sunday.

Pictures by william1st - Photobucket
Thanks you for assists...
Any further advice/comments?

 

Yeah, the pix are good microscopic views. Now we need to see what the entire valley looks like. The shadow doesn't allow us to see much. As XSleeper said, there should be metal flashing in the valley to prevent water from infiltrating. Obviously you are having a problem and we need to find out what is happening. We'll wait on pix.