Originally Posted By: pdacey This post was automatically imported from our archived forum.
Inspected this house on Tuesday. The roof is clay tile. I feel there is a possible design flaw in the roof at the back of the house.
At either side of the back patio there are multiple planes that converge to a single small area.
There are four surfaces that converge together. The large area to the back, the slope to the left, the slope to the right and there is an upper roof (not in the Picture) that drains to this area as well. (the metal pan in the center of picture)
[ Image:http://www.nachi.org/bbsystem/usrimages/I/IMG_7244.JPG ]
Now, this pan is upslope of a smaller area of roofing. The pan and roof line are angled and direct the water to the left and goes under, yes under the tiles below.
[ Image:http://www.nachi.org/bbsystem/usrimages/I/IMG_7245.JPG ]
So all of that water will actually flow under these tiles. There is flashing at the wall to the left.
A similar condition exists on the other side of the patio. But on a smaller scale.
My gut tells me this could be a big problem during heavy rain. It just seems like a lot of water to squeeze through these to areas. Am I crazy or does anyone else see a concern as well.
Any opinions are welcome.
I've already addressed this with the client and they spoke to the builder and roofer about it. But they just yessed the client and said don't worry about it.
This house falls under our new TRCC rules here and the builder is only responsible for the roof for one year.
There is no code/law/rule to point to to help the client's/my position about this. It's more of a design issue. How do you defend yourself on a design issue?
Originally Posted By: Jay Moge This post was automatically imported from our archived forum.
just note your profesional opinion (which is what you were hired for) advise you client, and be done. if they’re further actions get them nowhere, and it becomes a problem, then you can mutter “i told you so” under your breath. what els can we as HIs do?
Originally Posted By: escanlan This post was automatically imported from our archived forum.
Quote:
So all of that water will actually flow under these tiles.
WOW!!  What a problem waiting to happen!!
If the flow point is under the tiles that in itself indicates bad design as the tiles are no longer performing their intended function to shed water. Looks like they flashed it quite a bit but flashing is not intended to perform the main function of roof covering. Does the manufacturer of the tile have an installation guide? It probably states the overlaps, etc and can be used as the final word for the client and bulder as to proper tile installation.
2003 IRC:
Quote:
SECTION 1503
WEATHER PROTECTION
1503.1 General.
Roof decks shall be covered with approved roof coverings secured to the building or structure in accordance with the provisions of this chapter. Roof coverings shall be designed, installed and maintained in accordance with this code and the approved manufacturer?s instructions such that the roof covering shall serve to protect the building or structure.
After you provide manufacturer specs and this IRC quote it should be clear.
I feel for the buyer but make sure he knows the new TRCC rules because if they continue the purchase they are in for some fun later!
-- Manny (Emmanuel) Scanlan
Knowledge is power, but sharing knowledge brings peace!
Originally Posted By: kdolin This post was automatically imported from our archived forum.
Not to be critical or to say I am a roofter, but those tiles are not designed to be water proof. they are designed to protect the rolled mineral roofing below.
But I agree that it is a very poorly executed design. I see quite a few similar situations here in south Florida, but never quite that blatent. typicly at the intersection of two seperate hipps close to the end.
I make note that the substrate is exposed. and if the tiles are properly secured.
