What Is the Difference Between Plaster of Paris & Drywall Mud?

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What Is the Difference Between Plaster of Paris & Drywall Mud?....5

Plaster of Paris and drywall mud are different ways to patch various types of materials like a hole in a wall. Find out about the major differences between Plaster of Paris and drywall mud with help from an experienced construction professional in this free video clip.

Part of the Video Series: Home Sweet Home Repair
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Video Transcript

Hi, this is Nicholas Iarocci, The Home Source Guy, president and owner of Source Development, Inc., a residential and commercial construction company in Garnerville, New York and this is the difference between plaster of Paris and joint compound. Well they are both forms of gypsum. The difference between the two is mainly in their uses but I'm going to describe the brief difference in characteristics when they are made, they both are derivatives of gypsum. The plaster of Paris is heated up to about 400 degrees and then has calcium chloride added to it or lime and when it sets in powdered form when added with water, it dries immediately, almost rapidly. The main use of plaster of Paris is they have many uses for it ornate, they use it in art, they use it in even medical professions to duplicate when you duplicate your teeth they use plaster of Paris to make an impression on your teeth, they make casts for bones and stuff like that but in the building end of it they use them for fabricating moldings or ornate display pieces. It's not structural so what you would do is a slow drying compound when you are doing seaming materials or using regular drywall panels. A lathe or a board that's specifically made to use plaster of Paris is appropriate when you are using this. It's made as a skim coat material. So mainly with the widespread use of drywall the joint compound is more commonly used and they use plaster of paris for a skim coat. This is Nicholas Iarocci, The Home Source Guy, helping you build a better life and we'll see you next time.


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