Respuesta :
The 3 coats of plaster used over expanded metal lath are:
- Scratch coat- The first plaster coat, is scratched to create a bond for a second coat.
- Brown coat- The second plaster coat, is applied after the scratch coat and used to level the surface. (about 1/4 ")
- Finish coat- The third and final application of plaster gives the surface its desired texture and final leveling. (1/8 "thick)
What is plaster?
A paste-like cementitious substance that is applied to lath or brickwork to create a completed surface and is typically based on gypsum or Portland cement applied either manually or by a machine.
What is lath?
A foundational substance to which plaster is put. Most laths used nowadays are either prefabricated gypsum boards or expanded metal.
What is the purpose of metal lath?
The stucco cementitious membrane is embedded and fastened to the building's structural components using metal lath as a platform. Without the lath, applying stucco to open-frame or sheathed construction would be difficult or impossible.
Learn more about lath: https://brainly.com/question/8236547
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