2000 International One & Two Family Dwelling Code
Approved corrosion-resistive flashing shall be provided in the exterior wall envelope in such a manner as to prevent entry of water into the wall cavity or penetration of water to the building structural framing components. The flashing shall extend to the surface of the exterior wall finish and shall be installed to prevent water from reentering the exterior wall envelope. Approved corrosion-resistant flashings shall be installed at all of the following locations:
* At top of all exterior window and door openings in such a manner as to be leak proof, except that self-flashing windows having a continuous lap of not less than 11/8inches (28 mm) over the sheathing material around the perimeter of the opening, including corners, do not require additional flashing; jamb flashing may also be omitted when specifically approved by the building official.
* At the intersection of chimneys or other masonry construction with frame or stucco walls, with projecting lips on both sides under stucco copings.
* Under and at the ends of masonry, wood or metal copings and sills.
* Continuously above all projecting wood trim.
* Where exterior porches, decks or stairs attach to a wall or floor assembly of wood-frame construction.
* At wall and roof intersections.
* At built-in gutters.
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In detail: I am having a new home built and the roof and stone work have just been completed. I looked at it and noticed that may be an issue on the walls above a bay window and front porch See pictures: http://pws.prserv.net/usinet.lhirsch/MVC-007X.JPG
Counter flashing is being installed but is not yet installed in the second picture above. There is hard sheathing and a thin blue foam type house wrap behind all of the stone. The problem I see is that there is not any sheating or flashing where the stone sits on the roof decking/and/or other framing supports. The stone sits directly on the wood.
You can see the back (inside) of the window here: http://pws.prserv.net/usinet.lhirsch/MVC-002X.JPG
A close up showing the stone and mortar on the wood is here: http://pws.prserv.net/usinet.lhirsch/MVC-003X.JPG
The back (inside attic) of the front porch wall is here: http://pws.prserv.net/usinet.lhirsch/MVC-005X.JPG
Can water penetrate the stone and mortar and run down the back of the stone until it hits the wood and cause problems? The stone is about three inches thick.
My guess is that there would have to be SO much rain for this to happen that while possible, it is not practical to happen. In order to get the builder to fix it, I would have to show a code violation. Is this a code violation? Any response would be appreciated.