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RE: GSBN:Lime Wash

<x-charset windows-1250>Hi Jeff,

We have used texture guns and airless sprayers to apply lime wash and found
them to be unsuccessful enough that we hand rolled 15,000 sq feet of it at
Ridge winery. We were using the vertical pulverized quicklime which we slake
and now sell through the few "green resource" stores in California. I
believe that the aeration that occurs in spraying defeats the wet bonding
suction of hand applied lime wash even when it is back rolled. More coats of
a thinner (more water) mix over a hose soaked wall that is back rolled is
something I might try in your scenario but we have found that high and large
walls get done fairly quickly with 18" rollers. We also found the use of
scissor lifts to be invaluable in quality and body control...for another

Best of luck,


-----Original Message-----
From: GSBN [<a  target="_blank" href="mailto:GSBN@...";>mailto:GSBN@...] On Behalf Of Jeff Ruppert
Sent: Wednesday, April 26, 2006 4:31 PM
To: GSBN; strawbale@...
Subject: GSBN:Lime Wash

Hello Everyone,

We are presently working on a rather large project (30,000 sf horse
arena and attached residence, all straw bale) and would like to apply a
lime wash with pigment over the brown coat of plaster, which is
cement/lime, to roughly 15,000 sf of surface area.

My question is, has anyone ever tried spraying lime wash?  The huge
amount of surface area is leading me to try and find a faster way of
applying it other than by brush or roller.  We have access to both
hydrated and hydraulic lime.

Also, I know there have been discussions on these lists regarding size
of SB structure so I don't want to ask everyone if there is a larger SB
structure than this one (I am sure there is!), but this one definitely
is "up there" in terms of size.  Make a mental note if anyone ever asks
how large you can go.  We have 20 ft tall walls included in the 15,000
sf of wall system on this project.  It is all three-string bales stacked

Here are some pictures for your delight!  Thanks in advance for any help.

<a  target="_blank" href="http://photos.odiseanet.com/main/gallery2/main.php?g2_view=core.ShowItem&amp;g2_";>http://photos.odiseanet.com/main/gallery2/main.php?g2_view=core.ShowItem&amp;g2_</a>

Sorry about the use of cement plaster!  A project of this scale with six
feet of snow on the ground in the winter, big winds, and a "real-life"
time window, nothing compares with the cost, durability, and available
labor.  Thank goodness we live in a VERY dry climate!

Jeff Ruppert, P.E.

Odisea LLC
Ecological Building, Engineering and Consulting

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