MyFloridaCode.com

You may reference the text, ' Facility Construction in Hot, Humid Climates'.
This was issued to all school board facility departments back in the 90's.
Written by CH2MHill. Addresses the very concerns you are discussing and goes
well beyond the basics of the Code.

 

From: codetalk-bounces at myfloridacode.com
[mailto:codetalk-bounces at myfloridacode.com] On Behalf Of Will Spates
Sent: Tuesday, February 02, 2010 11:05 AM
To: Ken Rodgers; codetalk at myfloridacode.com
Subject: Re: [Florida Code Talk] House Wrap

 

Ken

 

I have seen this practice as a NOT to be performed.  It likely ties back to
northern construction details where the moisture vapor moves from the inside
of the building towards the outside in the winter time.  The observations
you described are not suitable for hot humid climates.  I would recommend
the vapor barrier / drain plane on the outside of the sheathing with an air
space capillary break between the sheathing and the drain plane.  

 

 

William H. Spates, President
Indoor Environmental Technologies, Inc. 
1384 Pierce Street 
Clearwater, FL 33756 
phone: 727-446-7717 
fax: 727-441-3203
cell: 727-365-1913
 
website:  <http://www.ietbuildinghealth.com/> www.IETBuildingHealth.com
email:    <mailto:wspates at IETBuildingHealth.com>
wspates at IETBuildingHealth.com
 



 

  _____  

From: codetalk-bounces at myfloridacode.com
[mailto:codetalk-bounces at myfloridacode.com] On Behalf Of Ken Rodgers
Sent: Monday, February 01, 2010 7:07 PM
To: codetalk at myfloridacode.com
Subject: [Florida Code Talk] House Wrap

 

Has anyone ever heard of putting the house wrap on under the sheathing
(OSB)?  I'm doing a siding replacement job where the lap siding had failed
(can't remember the name of it but it had a class action law suit against it
several years ago).  There are some spots where the siding allowed the OSB
sheathing underneath to become saturated and thus rotten.  As we were
removing some of the bad spots of sheathing to be replaced we found that the
framing had been covered with TYPAR.   It's unfortunate that it wasn't on
the outside of the sheathing as it would have made our siding replacement
job MUCH simpler.  

 

I was just wondering if anyone had ever seen this done and if it was ever an
accepted practice to do this or is this just another example of how NOT to
build a house.  I know the code (703.2) states that the weather-resistant
material will be applied over studs or sheathing but I'm pretty sure this is
not intended to mean you can/should put it under the structural sheathing,
right?

 

Thanks,

 

Ken

 

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