[Strawbale] Plaster content

[Enn Veesalu]

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 at amper....muni.cz
[mailto:strawbale-bounces at 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

   

 

  _____  

From: strawbale-bounces at amper....muni.cz
[mailto:strawbale-bounces at amper....muni.cz] On Behalf Of Thomas Simkevicius
Sent: Wednesday, July 20, 2011 12:01 AM
To: strawbale at amper....muni.cz
Subject: [Strawbale] Plaster content

 

Hello,

 

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?

 

Regards,

 

Tomas

 






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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 at sport-hotel...
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