Halftime Plaster Accelerator

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Product Information Halftime Plaster Accelerator is a chemical additive for use with finishing plaster. The additive creates a fast set plaster by speeding up the chemical crystal formation that causes plaster to set or harden. Halftime is recommended for shortening the setting time of finishing plaster. Halftime will shorten the setting time by up to 60 minutes, depending on the ambient temperature and relative humidity of the working environment. Show more