The purpose of finishing lime is to provide plasticity and bulk to the finish coat. Lime, however, does not set, is subject to considerable shrinkage when drying, and will not produce a hard finish when used alone. For these reasons it is mixed with gypsum gauging plaster to provide hardnesss and resistance to shrinkage.
There are two types of CGC finish limes: (1) normal (single) hydrated and (2) double hydrated.
Each requires different handling for slaking and soaking in order to produce a good finish lime putty
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Snowdrift Finishing Lime | Add To Quote |
USG Snowdrift® Double Hydrated Finishing Lime is a 9% hydrated finishing lime.
USG Snowdrift® Double Hydrated Finishing Lime does not require soaking, and virtually eliminates the possibility of future expansion within the first coat because of unhydrated magnesium oxides. Complies with ASTM C206, Type S (not more than 8% unhydrated oxides).