[corker]

Roof is 20 years old. I had to repair a section last year - I noticed water running thru soffits in one area during rainstorms. Removed tiles (mortar patties all loose) and found substrate (heavy tar paper with grit - mineral guard) deteriorated and roof deck rotted. Replaced that section. Noticed another area of soffit leaking. Same issue, but not sure how to handle this job.
There is a long valley that ends into a section of roof without a valley. All rain water appears to run under roof tiles and it made its way thru substrate and rotted roof deck. It appears that there is no flashing in the valley (tiles are mitered very close together in valley) and water was designed to run under tiles. Was this the design 20 years ago? Mortar beds for tiles were set on substrate? The whole design just sounds like a recipe for failure. There is also no flashing along side where roof meets the house structure. I tried to attach pictures, but it's asking for a URL not an attachment.
Thanks,
Corker

 

[corker]

Re: Barrel Tile Roof Questions - Pictures

Here are a few pictures

 

[hotrod351]

who ever did the end of the valley didnt know how to do it. the valley should of extended about another 8 - 10" and it should of ended on top of the tile, not have the tile cut like it is in the picture. that way the water would run down the valley and out onto the top of the tile, not under.

 

[mgp roofing]

This is how it should be done. This was a repair I did to solve a similar kind of leak issue. This roof has a internal gutter system that you don't have, but the rest is the same. The tiles are installed on timber battens. Whoever came up with the idea of installing tiles on mortar patties should be shot. Ditto for the blobs of foam idea that is also doomed to fail. Both are never done in my country, thank God! P.S many of these tile roofs here have NO underlayment, and they don't leak unless there are broken tiles :smile:

 

[corker]

Thank you for the responses and attached picture. I am going to tackle the problem this weekend. I am planning on using peel & stick for the substrate in the repair area. I will see how I can manipulate tiles where the valley ends and use flashing to come over top of the tiles - like the picture shows.