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The second coat was applied for both aesthetic purposes and to provide long lasting durability. This plaster mixture uses a ratio of 1 part mixed hydrated lime and water to three parts sand.  This mixture is similar to one used by CCAT before, and it is recommended in Earthen Building.
 
The second coat was applied for both aesthetic purposes and to provide long lasting durability. This plaster mixture uses a ratio of 1 part mixed hydrated lime and water to three parts sand.  This mixture is similar to one used by CCAT before, and it is recommended in Earthen Building.
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===Instructions for Implementation===
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Begin by taking note of soil in the local area and prepare soil tests to find a soil with an appropriate soil content. Reference section II for further information on appropriate soil content.  Prepare tests for the soil in order to determine if soil may need added components. Prepare the cob surface for work to be done on it, by smoothing out protruding areas or removing excess dust. Have trowels, sand, sawdust, a hose, rags, and a workspace prepared for the day of plastering. On the designated plaster day, begin by sifting the decided upon soil through wire mesh to remove large particulate matter. Also at this time spray down cob surfaces with water so that it is slightly saturated. Mix equal parts soil, sand, and sawdust together well. These ratios may differ depending on soil content, they are the ratios we chose to use.  Again, reference sections II and III for information on ratios and soil.  Using trowels, apply smooth thin layers of plaster to surface. Repeat for each necessary coat.  An earthen plaster is a fine finish plaster for mild to moderate use and mild exposure.  This is a good place to stop if the earthen plaster is pleasing and the plastered object does not need exceptional protection.  In CCAT’s case, another step is necessary and so we also chose to apply a lime-based plaster as a finish coat. 
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Hydrated lime is best preslaked, that is soaked in water for as long as possible before use. So once it is decided that lime will be used, immediately begin soaking hydrated lime in water. When preslaking, mix well and leave about 2 inches of water on top of the putty in order to prevent the lime from reacting with CO2 in the air.  When it comes time to apply the lime, it rolls on much like the earthen plaster.  Wet the first plaster coat, and apply with trowels, Lime is caustic and care must be taken to protect the skin.  The lime can be dyed with iron oxide by adding it to the putty to achieve a preferred shade.  After the first layer of putty is laid down, take the tiles prepared for mosaic seats and set them in the wet lime.  When all the tiles are laid down, trowel more putty over the top of the tiles.  Using a clean rag, wipe the tops of the tiles and smooth the plaster between tiles.  After the plaster is somewhat dry, rags can be used again to smooth it down and get a nice finish.
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===Photos===
 
===Photos===
Some photos.
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Some photos will be coming soon
    
==Costs==
 
==Costs==
48

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