Can water penetrate a wall of limestone and mortar?
Should through wall flashing be installed where a wall intersects a roof?
Is this a code violation not to do it and if so, which code specifically?
This web site would seem to indicate it is a code violation:
http://www.realestateinspector.com/newsletter/flashing.htm which states:
<begin web site copy>
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
* 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.
<end web site copy>
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
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:
A close up showing the stone and mortar on the wood is here:
The back (inside attic) of the front porch wall is here:
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
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.