I definitely would. Email me at [log in to unmask]
From:
Sent: Monday, August 03, 2009 9:43
PM
To:
[log in to unmask]
Subject: Re: [BP] Masons in
Rudy,
I’d be happy to talk back-channel
about analytical costs if you’re interested.
John
From:
Sent: Monday, August 03, 2009
11:37 AM
To:
[log in to unmask]
Subject: Re: [BP] Masons in
Michael,
That last one got away unfinished. Working
on my lap at the
Thank you for taking the time to read and
reply. You are directly addressing a subject that concerns me greatly and I for
one am willing and interested (we can argue about able later) to learn how to
better effect education in the various traditional trades without making a
mess. Part of the problem is that we (PTN) keep getting bounced around between
different disciplines and partners and it’s often hard to tell who does
or doesn’t know what they are talking about. I will be the first to admit
my knowledge of lime and natural cements is limited at best. In both cases the
choice, unquestioned by me, to use hydraulic lime was made by the university
faculty. In 2008 it was the
Having the materials tested just makes
sense. Why it was not done isn’t known to me, but I will work to make
sure it happens in the future. One question would be cost. In timber frame
projects and other historic wooden building projects we have been able to get
wood identified by the Forest Products Lab at no cost. Is something like that
available for educational programs involving historic masonry structures? If
not, how do I budget for having mortar or plaster tested?
Rudy
From:
Sent: Sunday, August 02, 2009 5:06
PM
To: [log in to unmask]
Subject: Re: [BP] Masons in
Rudy,
"...the decision to use hydraulic lime was based on what
the academic and trades education staff considered to be best practice.."
When I
read things like this I wonder if I have stumbled in Bizzaro World. It reminds
me of an old Steve Martin comedy routine where he speculated about how much fun
it would be to teach your kids to talk wrong.
So 3
exasperated comments:
1. There
is absolutely nothing wrong with good old $9/bag ASTM C207 Type S Hydrated
Lime. We are currently restoring the old 1830's Snuff Mill at New York Botanic
Gardens with a simple hydrated lime-sand mix, matching the original materials.
We have had thousands of bags of this type of mortar installed in all sorts of
climates on other projects as well without streaking, washouts or other
nightmares. The problem with high calcium lime (often Type N) is that it is
more soluble, lower in water retention and more likely to cause the grief
people normally associate with lime mortar. So my suggestion is to avoid the
high calcium lime putty or the Type N hydrate and use Type S.
2.
"Hydraulic lime" and "traditional" is a bait-and-switch. On
the one hand, the historically accurate material - ordinary, non-hydraulic lime
- is embraced. Then the purveyors of hydraulic lime monger a little fear
and switch you to this hydrated hydraulic lime substitute. Yes
hydraulic lime was traditional in the 19th century - in
3. This
case of the argument being
Preservation
work would take a great leap forward in this country if we stopped worrying so
much about sales pitches and tried to think things through logically. I might
suggest a decision tree like this:
1.
Properly identify the original materials. (It astounds me how rarely this still
being done, in the rush to sell something else.)
2. Did
the original materials perform well, are they still commercially available, and
are we confident there are no problems in using it as a restoration
material as opposed to a new construction material? If the answers to these are
all yes, use the original materials!
3. If any
of these answers is negative, then we need to identify alternatives that will
provide analagous performance properties. This is more difficult to do, so this
is where all the hand-wringing should be going on. I would dare to venture that
this represents an extremely small fraction of all restoration work, however.
One more comment
on
If you
Google an NPS article called "The Southern Stucco Tradition",
reference is made to the use of natural cement in stuccos from
Edison Coatings, Inc.
Michael P. Edison
President
3 Northwest Drive
Plainville, CT 06062
Phone: (860) 747-2220 or (800)341-6621
Fax: (860)747-2280
Internet: www.edisoncoatings.com
www.rosendalecement.net
E-Mail: [log in to unmask]
---------- Original Message -----------
From: Rudy R Christian <[log in to unmask]>
To: [log in to unmask]
Sent: Sun, 2 Aug 2009 10:44:34 -0500
Subject: Re: [BP] Masons in New Orleans
> Michael,
>
> I would be interested in your feedback to
my blog http://traditional-building.com/Rudy_Christian/
Unfortunately I called Rosendale cement
>
> Rudy
>
>
>
>
>
> From:
> Sent: Friday, July 31, 2009
3:04 PM
> To:
[log in to unmask]
> Subject: Re: [BP] Mason in
>
> OK, I will get that set up for you.
>
> Edison Coatings, Inc.
> Michael P. Edison
>
> 3 Northwest Drive
>
> Phone: (860) 747-2220 or (800)341-6621
> Fax: (860)747-2280
> Internet: www.edisoncoatings.com
> www.rosendalecement.net
> E-Mail: [log in to unmask]
>
>
-- To
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05:58:00
> -- To terminate
puerile preservation prattling among pals and the uncoffee-ed, or to change
your settings, go to:
http://listserv.icors.org/archives/bullamanka-pinheads.html
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