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Stucco and Rendering mixes

The terms 'Render' and 'Stucco' are almost interchangeable; Render generally being UK terminology and Stucco, American. However, the mixes below are specific as they are slightly different, Stucco generally having less sand.

Various stucco mixes:

 
hydrated lime
sand
hair or fibre
Traditional Simple Soft Lime Stucco
1 part
2 part
 
 
Soft Lime Stucco with fibre (3 layer)
     
Base Layers (2)
1 part
3 parts
6 pounds per
cubic yards
Finish Layer
1 part
3 parts
 
Note: Portland cement is not included in this mix; however, its use will increase the workability of the mix and decrease the setting time, the amount of Portland cement added should not exceed 1/3rd part .
 
 
hydrated lime
sand
cement
Soft stucco
5 part
10 part
1/8th part
 
Traditional Natural Cement/Lime stucco
1 part
3 parts
2 parts Natural cement
 
Portland Cement stucco
2-3%
3 parts
1 parts
Portland

Various rendering mixes:

Cement/Lime Render
hydrated lime
sand
cement
not more than 15%
of the cement's volume
5 parts
2 part Portland
The same basic mix was used for all layers, but the final layer should contain more lime than the underlayers.
 
Cement Render
hydrated lime
sand
cement
 
5 parts
1 part Portland