I am agree, that somebody would be disagree.
In this case possible to use original recipe (1 : 1) and it’s OK!
Enn Veesalu
From: strawbale-bounces@amper....muni.cz
[mailto:strawbale-bounces@amper....muni.cz] On
Behalf Of Sport Hotel, Jure Pozar
Sent: Thursday, August 11, 2011
9:21 AM
To: European strawbale building
discussions
Subject: Re: [Strawbale] Plaster
content
Thats what I heard that people do this days: add
little cement for strenghtening, but lots of people would probably disagree
with this.
Jure
Dne 11.8.2011 6:00, piše Enn Veesalu:
Hello Tomas!
Maybe too late for you, but you asked about
recipe for lime plaster outside.
I am not sure for strawbale walls, but for
stone walls (I hope it’s the same) restorers use ratio 1 : 1, what mean
that 50% sand and 50% lime.
Now days surrounding air have a lot
pollutants and pure lime plaster is not so strong enough for active components
in outside. In this case is permissible today to add very small amount cement
too; for strengthening plaster.
Regards,
Enn Veesalu
Last week put some scratch coat onto my strawbale
garage. The render mix that I have used for the inside was 4
parts coarse sand to 1 part pure clay to 0,5 part chopped straw.
With this mix everything went perfect, no cracks appeared when the
plaster dried.
For the outside scratch coat I used the
same ratio plus added hydrated lime in powder to the mix. The ratio of the
lime I tried to keep to around 5% of the mix. The outside plaster cracked a
lot. I'm sure that the reason for the cracks was lime. There was little
area outside where I did not put lime in the plaster, and in this area no
cracks appeared when the plaster dried. What ratio of lime should I keep in the
mix for the outside?
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____________________________________________________
--
Jure Požar, dipl.org.tur./ general manager
HOTEL SPORT & MTB park Notranjska
Kolodvorska c. 1, Postojna
Slovenia
Tel.: +386 5 720 22 44
Fax: +386 5 720 22 40
Mobile: + 386 51 630 575
www.sport-hotel.si
e-mail: jure@sport-hotel...
www.dos-extreme.si
skype: jure.pozar
Bodi resnicoljuben: nikoli se ne pretvarjaj. Resnica vedno zmaga
Be truthful: never pretend. The truth always wins