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RE: GSBN:Lime Wash
The key to good lime washing is to apply it in several very thin coats, and
to rub it really well in with a circular brushing action. The main reason
that people are not happy with the results of using lime wash is that it
rubs off with a chalky residue on your clothes etc, but this is caused by
lack of knowledge about its use, applying it too thickly, and not rubbing it
in well enough. I think that spraying it on would almost certainly result in
too thick a coat, and could not replicate the rubbing action.
WARNING: Strawbale building can seriously transform your life!
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From: GSBN [<a target="_blank" href="mailto:GSBN@...]On">mailto:GSBN@...]On</a> Behalf Of Paul Lacinski
Sent: 02 May 2006 02:51
Subject: Re: GSBN:Lime Wash
I have sprayed limewash with an airless paint sprayer, with mixed
results. The key seems to be to get a large enough orifice so that
the lime particles don't cause it to clog. The normal orifice that
came from the rental yard was too fine. It did apply the material
with a reasonable degree of impact, which seems helpful. It wasn't
quite successful enough that we kept doing it, though for a project
this large I would probably look into it again.
But really, I would agree with Bill. I've only seen silicate paint
in action once, but it definitely seemed an improvement over limewash.
>Is the limewash for the outside or inside of the building? Reason I
>ask is that for me it would seem to make sense on the inside of the
>structure where the antiseptic benefits would be advantageous.
>However, for that to be a factor the limewash would have to be
>applied on a frequent (annual?) basis to be effective. There is a
>lime paint, the name of which I can't recall, that Harry Francis has
>brought up in the past as being particularly good for a number of
>reasons. Perhaps he can respond with current info. On the exterior
>why not take advantage of the lime of silicate paints offered by the
>fellows at Eco-House. It would provide a similar soft matt look,
>resist water absorption while remaining vapor open like the
>limewash. Furthermore, rather than remain a coating on the wall, it
>would become part of the surface.
>Another idea that hasn't occurred to me in the past is that you could
>inquire whether or not lime could be added to the paint base in
>place of the pigments. It would also provide a binder for the lime
>which you very well might need anyway.
>Athena & Bill Steen
>The Canelo Project
>HC1 Box 324
>Canelo/Elgin, AZ 85611
>On Apr 26, 2006, at 4:31 PM, Jeff Ruppert wrote:
>>We are presently working on a rather large project (30,000 sf horse
>>arena and attached residence, all straw bale) and would like to
>>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
>>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
>>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
>>Here are some pictures for your delight! Thanks in advance for any
>><a target="_blank" href="http://photos.odiseanet.com/main/gallery2/main.php">http://photos.odiseanet.com/main/gallery2/main.php</a>?
>>Sorry about the use of cement plaster! A project of this scale
>>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.
>>Ecological Building, Engineering and Consulting
>>Front Range Office West Slope Office
>>1731 15th St. #105 1022 Main St.
>>Boulder, CO 80302 Carbondale, CO 81623
>>303.443.4355 f 1.866.795.6699 f
>>GSBN is an invitation-only forum of key individuals and
>>representatives of regional straw construction organizations. The
>>costs of operating this list are underwritten by The Last Straw
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>>technical editing arm.
>>For instructions on joining, leaving, or otherwise using the GSBN
>>list, send email to GSBN@...HELP in the
>>SUBJECT line. ----
>GSBN is an invitation-only forum of key individuals and
>representatives of regional straw construction organizations. The
>costs of operating this list are underwritten by The Last Straw
>Journal in exchange for use of the GSBN as an advisory board and
>technical editing arm.
>For instructions on joining, leaving, or otherwise using the GSBN
>list, send email to GSBN@...HELP in the
>SUBJECT line. ----
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GSBN is an invitation-only forum of key individuals and representatives of
regional straw construction organizations. The costs of operating this list
are underwritten by The Last Straw Journal in exchange for use of the GSBN
as an advisory board and technical editing arm.
For instructions on joining, leaving, or otherwise using the GSBN list, send
email to GSBN@...HELP in the SUBJECT line.