Well, not so obvious to me.
Isn't stucco, similar to mortar, basically a sacrificial layer meant to be
replaced periodically?
I would consider repairing the failed stucco and leaving the sound material
but not painting. This retains some of the original material. The repairs
could blend in well with the original but still could be seen. Is there a
problem with this approach?
Painting over "original historic fabric" really does not "retain" it - you
can't see it anymore.
Eric Hammarberg
Associate Director of Preservation
Associate
LZA Technology
641 Avenue of the Americas
New York, NY 10011-2014
Telephone: 917.661.8176
Mobile: 917.439.3537
Fax: 917.661.8290
email: [log in to unmask]
-----Original Message-----
From: Ralph Walter [mailto:[log in to unmask]]
Sent: Wednesday, November 21, 2001 9:52 PM
To: [log in to unmask]
Subject: Re: Painting Stucco Exterior of Chimney
In a message dated 11/21/2001 6:47:21 PM Eastern Standard Time,
[log in to unmask] writes:
As for applying anything to stucco (or not), I offer the following scenario
for commentary:
Historic Stucco mansion, Stockbridge, MA, ca. 1910, cement/lime based
stucco. Stucco is generally well bonded to back-up material, with some
limited areas delaminated due to moisture infiltration through some of the
many thousands of lineal feet of fine cracks in the stucco surface.
Option 1: Remove all historic fabric and replace with new stucco.
Option 2: Remove only the already failed areas of stucco, treat all surfaces
with breathable elastomeric finish matched to the original materials,
retaining 95% of original fabric and stabilizing it against further
water-related damage, while restoring appearance similar to original
whitewashed finish.
Option 3: Cut out thousands of feet of cracks and patch with _____?
Mike,
A particularly well-framed (especially for a mason-type, as opposed to a
carpenter-type, but then it is a masonry question) scenario, to which the
answer is obvious. Ask the right question, and one has a much better chance
of getting the right answer.
Ralph
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