Difference Between Gypsum and Drywall (with Table)

Gypsum and drywall are the materials used for building constructions. Both of these materials are used for building beautiful and strong walls of a building. However, although used for the same purpose, these two materials differ from each other in many aspects.

Gypsum is a naturally occurring prevalent mineral which is found in the layered sedimentary deposits. It is composed of calcium sulphate, i.e. CaSO4.2H2O, and has a very high commercial importance. The word gypsum is actually derived from the Greek word “gipsies” meaning plaster. It is partially soluble at the water, but at high temperatures, it becomes less soluble.

Drywall is a human-made material that is used for the application of walls without using the materials like mortar or plaster. It is also known as wallboard and is generally made up of gypsum plaster and paper. Drywall is sometimes used as a sheathing material for covering the exterior of a building. 

The difference between gypsum and drywall is that gypsum is a naturally occurring natural mineral used for construction work. At the same time, drywall is a manufactured product with gypsum as one of its raw materials. A lot of properties of the drywall are because of the gypsum plaster present in it.

Comparison Table Between Gypsum and Drywall

Parameters of comparisonGypsumDrywall
DefinitionIt is a naturally occuring common mineral.It is a man-made material used for construction purposes.
OccurrenceIt is found in the layered sedimentary rocks by the lakes, hot spring, volcanic vapors etc.It is a manufactured product made up of gypsum plaster and paper.
Other formsIt has three other forms, i.e., alabaster, selenite, and a mineral that is the hydrated product of anhydrite.It does not have any other form.
PropertiesIt has a lot of different properties, like heat resistance, durability, etc.durable, easy to install and repair, soundproofing, etc.
UsesUsed as material for construction purposes and also as a raw material for various other products.Used as material for construction purposes, basically for building’s interiors.

What is Gypsum?

Gypsum is a naturally occurring prevalent mineral that is found in the layered sedimentary deposits. It is composed of hydrated sulfate and has a very high commercial importance. The word gypsum is actually derived from the Greek word “gypsos,” meaning plaster.

It is often used as a raw material for making many different products such as plaster, chalk, fertilizers, etc. The gypsum has three various forms that have their uses.

It has a finely grained white type known as alabaster, which is generally used for making sculptures by various cultures such as ancient Egypt, Rome, medieval England, etc.

Gypsum also has a translucent crystal form known as selenite, and its third type is a mineral that is a hydrated product of anhydrite.

Gypsum is partially soluble in water; however, at high temperatures, it becomes less soluble. It is known to be deposited by lakes, seawater, hot spring, and even volcanic vapors. Gypsum has plenty of uses, like gypsum blocks and gypsum mortar, used as the concrete block for constructing buildings.

It is also used in the formation of fertilizers. Gypsum deposits are found all over the world. However, the largest gypsum quarry in the world is in Nova Scotia. In contrast, the USA is the primary producer of gypsum in the world.

gypsum

What is Drywall?

Drywall is a human-made material used for the application of walls without using the materials like mortar or plaster. It is also known as wallboard and is generally made up of gypsum plaster and paper.

Drywall is sometimes used as a sheathing material for covering the exterior of a building. It is basically a construction material required to make the interiors of a structure, such as the walls and the ceilings.

Drywall is a prevalent material used nowadays due to the following reasons: it is effortless to install, so a person does not require much outside help. It is durable, and if damaged, it can be repaired easily. it is a faster and a better alternative to plaster and wood.

Drywall is very useful when it comes to soundproofing the building. However, to do so, one has to cover the walls with multiple layers of drywall.

Along with the positive results, it has some negative factors as well. Drywall is very vulnerable to moisture, so it should be used in a room with humidity, such as a kitchen. It can also have harmful health effects on people, and it often has lousy odors.

drywall

Main Differences Between Gypsum and Drywall

  1. Drywall is a material used for the finishing work commonly in the building’s interior, whereas gypsum is used to make buildings and many other manufactured products.
  2. Drywall is a human-made material, whereas gypsum is a naturally occurring mineral.
  3. Drywall is a manufactured product. In contrast, gypsum is one the the raw materials that are used in the formation of drywall.
  4. Gypsum has three other forms with its own uses in the industries, whereas drywall does not have any other forms.
  5. Gypsum is a mineral that occurs naturally and has water in it, whereas drywall has gypsum plaster as one of its raw materials that do not hold any water.
  6. Gypsum is naturally heat resistant, while drywall is heat resistant because of gypsum’s presence in it.

Conclusion

Gypsum and Drywall are the materials that are used for the purpose of constructing buildings. Although both of these materials are somewhat used for the same purpose, they still have many differences.

Gypsum is a naturally occurring common mineral generally found in the layered sedimentary deposits by the lakes, seawater, hot springs, and even the volcanic vapors. It is composed of hydrated calcium sulfate and is very valuable commercially.

Gypsum has three other forms, i.e., alabaster, selenite, and a mineral that is the hydrated product of anhydrite. It is used as a raw material for various other manufactured products such as plasters, calk, fertilizers, etc. It is generally found worldwide.

On the other hand, drywall is a human-made material that is usually used for constructing the interiors of the building. It is made up of gypsum plaster and paper. It is effortless to install, is durable, and very easy to repair in the times of any damage. It is also useful for soundproofing a room but to do so, one has to use multiple layers of drywall to cover the walls.

However, gypsum is very vulnerable to moisture and should not be used to cover the walls of a room with high humidity. Sometimes it can also cause harmful health effects and have a terrible odor.

References

  1. https://microbiomejournal.biomedcentral.com/articles/10.1186/s40168-015-0137-y
  2. https://www.sciencedirect.com/science/article/pii/S2213343720303134