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Stucco... to STICK or
NOT TO STICK... that is the Question
The during the home buyer's Professional Home Inspection
of this New Home (only 45 days old) numerous Builder Defects were
discovered, not the least was the defective stucco application. (THERE
ARE SEVERAL AUDIO/VIDEO CLIPS TO VIEW BELOW. TO PLAY EACH VIDEO, CLICK THE
LINK OF SO INDICATED OR MOVE YOUR MOUSE POINTER OVER THE IMAGE IF SO
INDICATED)
When homes are built
in the summer months, here in the Valley Of The Sun, predominantly between
June and September, we
see many homes, perhaps the majority of new construction, that exhibit
deficiencies in stucco application. The stucco of this house is
among some of the most inappropriately applied stucco systems that we have
encountered.
The buyer instructed
the builder to bring the stucco subcontractor to the property for a
discussion of the defect. The stucco subcontractor agreed to have the
walls of the house sprayed with water for several days, then check the
stucco for proper cured conditions, then patch the holes and voids.
This home inspection took place on July 23rd 2005, the Builder was notified
of the stucco defect on July 24th 2005 This web page was written on August
5th 2005 and the buyer is still working through the process of getting their
house finished to the standards set forth by the Registrar Of Contractors
Standards Of Workmanship.
Some points of
interest about stucco. The majority of homes constructed in the valley
in the 80s, 90s and 2000s are constructed with a One-Coat Stucco System.
Some of the stucco systems are a propriety mix formula, some of the stucco
systems are purchased by the stucco subcontractor in pre-mixed bagged bulk,
and some are purchased by the stucco subcontractor in bulk components that
must be mixed on site. All of the stucco systems are applied in
similar fashions and all stucco contractors are required to post a copy of a
"Stucco Application Card" with the builder and with the governing
municipality building office.
And... no... as you
will see below... in the video clips... stucco is not suppose to flex.
The ASTM standard calls for a maximum deflection of L/360 for the support
members or sheathing. The deflection of the wall surface is often
expressed in terms of distance between supports (L) and the typical value
the material can deflect without damage. For plaster (stucco) it is in the
range of 360-480. Thus for 16" OC (On Center) studs, 16/480=.033" or
16/360=.044".
In general, the issues
depicted below look to be poor curing. We have sold many residential
homes in AZ that have stucco, and the issue is always maintaining the
environment. Too hot and too dry , with winds, causes the materials to
dehydrate, and you are left with the powder you see in the video clips
below. Typically this is also associated with a lot of cracking.
Bottom line...
once again... this is a graphic example
of some of the items that can go wrong when a new home is under construction
and even after the construction process has been completed.
Phase Inspections are ESSENTIAL if you
wish to protect your investment. Who is going to look out for your
interests and perhaps the most important investment of your life? |