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Homeowner Forum / Construction / October 2005



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Is through wall flashing required on limestone wall above roof line?

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lance hirsch - 27 Oct 2005 22:39 GMT
I am having a new home built and the roof and stone work have just been
completed.  I looked at it and noticed what 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
http://pws.prserv.net/usinet.lhirsch/MVC-004X.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 to four
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 opinions (or facts) would be appreciated.  Replies may be posted here or
e-mailed to lhirsch AT attglobal.net.

Lance
---------------------------------------------------------------------
"...Bond reflected that good Americans were fine people and that most
of them seemed to come from Texas."
Casino Royale. Chapter VII

nospam - 28 Oct 2005 19:49 GMT
Texas Hill Country?

Yes, you should have flashing behind this, it's no different a concept than
the detail at the brick lug.

Jeff

> I am having a new home built and the roof and stone work have just been
> completed.  I looked at it and noticed what may be an issue on the walls
[quoted text clipped - 35 lines]
> of them seemed to come from Texas."
> Casino Royale. Chapter VII
lance hirsch - 31 Oct 2005 04:08 GMT
Yes, Texas Hill Country.

I'm afraid I don't know what a brick lug is.  Is that the part of the
foundation that the brick or stone sits on?

Is this a code violation?

Thank you.

Lance
---------------------------------------------------------------------
"...Bond reflected that good Americans were fine people and that most
of them seemed to come from Texas."
Casino Royale. Chapter VII

> Texas Hill Country?
>
[quoted text clipped - 52 lines]
>> of them seemed to come from Texas."
>> Casino Royale. Chapter VII
nospam - 31 Oct 2005 16:41 GMT
May not be a code violation - depends on your governng body.  Call the city
or county inspector to verify.

In the meantime, look at

www.buildingscience.com

there are a lot of helpful articles that deal with drainage planes.

You are asking for future probelms as-is.  I would ask my builder for a
written guarantee that he will repair or replace all components that are
water damaged by this condition, for the life of the house.  If he won't,
ask him to remove, flash, and rebuild.

You may have to retain a Forensic Engineer or Registered Waterproofing
Consultant to write a report for you to get action out of your builder.
Search http://www.tbpe.state.tx.us/ for a local engineer, or look in the
phone book.  Also, a shameless plug for my firm, www.terracon.com is in most
Texas cities and ww.rci-online.org will get you to a RWC (there are 191 in
TX).  There are also many other capable firms, just look in the book!

Jeff

> Yes, Texas Hill Country.
>
[quoted text clipped - 67 lines]
> >> of them seemed to come from Texas."
> >> Casino Royale. Chapter VII
 
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